288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Features
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D1.fm - Rev N 5/08 EN 1 ©2003 Micron
Technology, Inc. All rights reserved.
CIO RLDRAM® II
MT49H32M9 – 32 Meg x 9 x 8 Banks
MT49H16M18 – 16 Meg x 18 x 8 Banks
MT49H8M36 – 8 Meg x 36 x 8 Banks
Features
• 400 MHz DDR operation (800 Mb/s/pin data rate)
• 28.8 Gb/s peak bandwidth (x36 at 400 MHz
clock frequency)
• Organization
– 32 Meg x 9, 16 Meg x 18, and 8 Meg x 36
• 8 internal banks for concurrent operation and
maximum bandwidth
• Reduced cycle time (20ns at 400 MHz)
• Nonmultiplexed addresses (address multiplexing
option available)
• SRAM-type interface
• Programmable READ latency (RL), row cycle time,
and burst sequence length
• Balanced READ and WRITE latencies in order to
optimize data bus utilization
• Data mask for WRITE commands
• Differential input clocks (CK, CK#)
• Differential input data clocks (DKx, DKx#)
• On-die DLL generates CK edge-aligned data and
output data clock signals
• Data valid signal (QVLD)
• 32ms refresh (8K refresh for each bank; 64K refresh
command must be issued in total each 32ms)
• 144-ball μBGA package
• HSTL I/O (1.5V or 1.8V nominal)
• 25–60Ω matched impedance outputs
• 2.5V VEXT, 1.8V VDD, 1.5V or 1.8V VDDQ I/O
• On-die termination (ODT) RTT
Figure 1: 144-Ball μBGA
Notes: 1. Contact Micron for availability of industrial
temperature products.
2. Contact Micron for availability of Pb-free
products.
3. The FBGA package is being phased out.
Options Marking
• Clock cycle timing
– 2.5ns (400 MHz) -25
– 3.3ns (300 MHz) -33
– 5ns (200 MHz) -5
• Configuration
– 32 Meg x 9 32M9
– 16 Meg x 18 16M18
– 8 Meg x 36 8M36
• Operating temperature
– Commercial (0° to +95°C) None
– Industrial (TC = –40°C to +95°C;
TA = –40°C to +85°C)
IT1
• Package
– 144-ball μBGA FM1
– 144-ball μBGA (Pb-free) BM2
– 144-ball FBGA HU3
– 144-ball FBGA (Pb-free) HT2, 3
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D1.fm - Rev N 5/08 EN 2 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Features
Figure 2: 288Mb RLDRAM II CIO Part Numbers
Notes: 1. The FBGA package is being phased out.
BGA Part Marking Decoder
Due to space limitations, BGA-packaged components have an abbreviated
part marking
that is different from the part number. Micron’s BGA Part
Marking Decoder is available
on Micron’s Web site at micron.com.
Package
144-ball μBGA
144-ball μBGA (Pb-free)
144-ball FBGA
144-ball FBGA (Pb-free)
FM
BM
HU1
HT1
Example Part Number: MT49H16M18FM-25
tCK = 2.5ns
tCK = 3.3ns
tCK = 5ns
Speed Grade
-25
-33
-5
-
MT49H Configuration I/O Package Speed Temp
Temperature
Commercial
Industrial
None
IT
I/O
Common
Separate
None
C
Configuration
32 Meg x 9
16 Meg x 18
8 Meg x 36
32M9
16M18
8M36
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_CIOTOC.fm - Rev N 5/08 EN 3 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Table of Contents
Table of Contents
BGA Part Marking Decoder . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .2
General Description . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .6
State Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .7
Ball Assignments and Descriptions. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .11
Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .15
Electrical Specifications – IDD . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .16
Electrical Specifications – AC and DC. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .18
Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .18
AC and DC Operating Conditions. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .18
Input Slew Rate Derating . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .21
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .27
Temperature and Thermal Impedance . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .28
Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .30
MODE REGISTER SET (MRS) . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .31
WRITE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .37
READ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .38
AUTO REFRESH (AREF) . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .39
Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .40
INITIALIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .40
WRITE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .43
READ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .48
AUTO REFRESH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .54
On-Die Termination . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .55
Multiplexed Address Mode . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .57
IEEE 1149.1 Serial Boundary Scan (JTAG) . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .66
Disabling the JTAG Feature . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .66
Test Access Port (TAP). . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .66
TAP Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .67
Performing a TAP RESET . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .69
TAP Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .69
TAP Instruction Set . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .70
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_CIOLOF.fm - Rev N 5/08 EN 4 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
List of Figures
List of Figures
Figure 1: 144-Ball FBGA . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .1
Figure 2: 576Mb RLDRAM II CIO Part Numbers . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . .2
Figure 3: Simplified State Diagram . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .7
Figure 7: 144-Ball FBGA . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .15
Figure 8: Clock Input . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .20
Figure 9: Nominal tAS/tCS/tDS and tAH/tCH/tDH Slew Rate . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Figure 10: Example Temperature Test Point Location . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . .29
Figure 12: Read Burst Lengths . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .34
Figure 13: On-Die Termination-Equivalent Circuit . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . .36
Figure 14: WRITE Command . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .37
Figure 15: READ Command . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .38
Figure 16: AUTO REFRESH Command . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . .39
Figure 17: Power-Up/Initialization Sequence . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . .41
Figure 18: Power-Up/Initialization Flow Chart . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . .42
Figure 19: WRITE Burst . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .43
Figure 20: Consecutive WRITE-to-WRITE . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . .44
Figure 24: Basic READ Burst Timing . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .48
Figure 25: Consecutive READ Bursts (BL = 2) . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . .49
Figure 26: Consecutive READ Bursts (BL = 4) . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . .49
Figure 27: READ-to-WRITE . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .50
Figure 28: Read Data Valid Window for x9 Device . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .51
Figure 29: Read Data Valid Window for x18 Device . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .52
Figure 30: Read Data Valid Window for x36 Device . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .53
Figure 31: AUTO REFRESH Cycle . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .54
Figure 32: READ Burst with ODT . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .55
Figure 33: READ-NOP-READ with ODT . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . .56
Figure 35: Command Description in Multiplexed Address Mode . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Figure 37: Mode Register Definition in Multiplexed Address Mode . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Figure 38: BURST REFRESH Operation with Multiplexed Addressing . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Figure 39: Consecutive WRITE Bursts with Multiplexed Addressing . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Figure 43: TAP Controller State Diagram . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . .68
Figure 44: TAP Controller Block Diagram . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . .68
Figure 45: JTAG Operation – Loading Instruction Code and
Shifting Out Data . . . . . . . . . . . . . . . . . . . . . . . . . .
.71
Figure 46: TAP Timing . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .72
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PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_CIOLOT.fm - Rev N 5/08 EN 5 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Lisf of Tables
Lisf of Tables
Table 1: 64 Meg x 9 Ball Assignments (Top View) 144-Ball FBGA . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Table 2: 32 Meg x 18 Ball Assignments (Top View) 144-Ball FBGA . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Table 3: 16 Meg x 36 Ball Assignments (Top View) 144-Ball FBGA . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Table 4: Ball Descriptions. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .14
Table 5: IDD Operating Conditions and Maximum Limits . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Table 6: Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . .18
Table 7: DC Electrical Characteristics and Operating Conditions. . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Table 8: Input AC Logic Levels . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .19
Table 9: Differential Input Clock Operating Conditions . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. .20
Table 10: Address and Command Setup and Hold Derating Values. . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Table 11: Data Setup and Hold Derating Values . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .23
Table 12: Capacitance . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .24
Table 13: AC Electrical Characteristics: -18, -25E, -25, -33 . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . .25
Table 14: Temperature Limits . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .28
Table 15: Thermal Impedance. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .28
Table 16: Description of Commands . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . .30
Table 17: Command Table . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .30
Table 18: Cycle Time and READ/WRITE Latency Configuration Table . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Table 19: Address Widths at Different Burst Lengths . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . .34
Table 20: On-Die Termination DC Parameters . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .36
Table 21: 576Mb Address Mapping in Multiplexed Address Mode . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Table 22: Cycle Time and READ/WRITE Latency Configuration Table in
Multiplexed Mode . . . . . . . . . . . . . .61
Table 23: TAP Input AC Logic Levels . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .72
Table 24: TAP AC Electrical Characteristics . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . .72
Table 25: TAP DC Electrical Characteristics and Operating Conditions .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Table 26: Identification Register Definitions . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . .73
Table 27: Scan Register Sizes . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .73
Table 28: Instruction Codes . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .74
Table 29: Boundary Scan (Exit) Order . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .74
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 6 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
General Description
General Description
The Micron® reduced latency DRAM (RLDRAM®) II is a
high-speed memory device
designed for high bandwidth data storage—telecommunications,
networking, and
cache applications, etc. The chip’s 8-bank architecture is
optimized for sustainable high
speed operation.
The DDR I/O interface transfers two data words per clock cycle at the
I/O balls. Output
data is referenced to the free-running output data clock.
Commands, addresses, and control signals are registered at every
positive edge of the
differential input clock, while input data is registered at both
positive and negative edges
of the input data clock(s).
Read and write accesses to the RLDRAM are burst-oriented. The burst
length (BL) is
programmable from 2, 4, or 8 by setting the mode register.
The device is supplied with 2.5V and 1.8V for the core and 1.5V or 1.8V
for the output
drivers.
Bank-scheduled refresh is supported with the row address generated
internally.
The μBGA 144-ball package is used to enable ultra high-speed
data transfer rates and a
simple upgrade path from early generation devices.
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 7 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
State Diagram
State Diagram
Figure 3: Simplified State Diagram
Initialization
sequence
DSEL/NOP
WRITE READ
MRS AREF
Automatic sequence
Command sequence
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N EN 8 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
State Diagram
Functional Block Diagrams
Figure 4: 32 Meg x 9 Functional Block Diagram
Notes: 1. Examples for BL = 2; column address will be reduced with an
increase in burst length.
2. The “16” = (length of burst) x 2^(number of
column addresses to WRITE FIFO and READ logic).
13
WE#
CK#
CS#
REF#
CK
8
A0–A201
BA0–BA2
ZQ
24
32
I/O gating
DQM mask logic
Column
decoder
Bank 0
memory
array
(8,192 x 32 x 16 x 9)2
8,192
Bank
control
logic
Bank 1
Bank 0
Bank 2
Bank 3
Bank 4
Bank 6
Bank 5
Bank 7
13
81
3 8
8
Refresh
counter
13
18
Mode register
Control
logic
Command
decode
Rowaddress
MUX
Address
register
Columnaddress
counter/
latch
81
144
READ
logic
WRITE
FIFO
and
drivers
CLK
in
144
144
n
n
9
9
9
2
2
9
DQ
latch
QK/QK#
generator
Drivers
DLL
CK/CK#
RCVRS
Input
logic
(0 ....8)
VTT
RTT
ODT control
ODT control
VTT
RTT
ODT control
DQ0–DQ8
QK0/QK0#
QVLD
DK/DK#
DM
ZQ CAL Output drivers
ZQ CAL
5
31
31
SSeEnNsSeE a AmMpPliLfiIeFIrEsRS
8,192
n
n 9
9
Bank 0
rowaddress
latch
and
decoder
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N EN 9 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
State Diagram
Figure 5: 16 Meg x 18 Functional Block Diagram
Notes: 1. Examples for BL = 2; column address will be reduced with an
increase in burst length.
2. The “8” = (length of burst) x 2^(number of
column addresses to WRITE FIFO and READ logic).
13
WE#
CK#
CS#
REF#
CK
8
A0–A191
BA0–BA2
ZQ
23
32
I/O gating
DQM mask logic
Column
decoder
Bank 0
memory
array
(8,192 x 32 x 8 x 18)2
8,192
Bank
control
logic
Bank 1
Bank 0
Bank 2
Bank 3
Bank 4
Bank 6
Bank 5
Bank 7
13
71
3 8
8
Refresh
counter
13
18
Mode register
Control
logic
Command
decode
Rowaddress
MUX
Address
register
Columnaddress
counter/
latch
71
144
READ
logic
WRITE
FIFO
and
drivers
144
144
n
n
18
18
18
4
2
18
DQ
latch
QK/QK#
generator
Drivers
DLL
CK/CK#
RCVRS
Input
logic
(0 ....17)
VTT
RTT
ODT control
ODT control
VTT
RTT
ODT control
DQ0–DQ17
QK0–QK1/
QK0#–QK1#
QVLD
DK/DK#
DM
ZQ CAL Output drivers
ZQ CAL
5
21
21
SSeEnNsSeE a AmMpPliLfiIeFIrEsRS
8,192
n
n
18
18
CLK
in
Bank 0
rowaddress
latch
and
decoder
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N EN 10 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
State Diagram
Figure 6: 8 Meg x 36 Functional Block Diagram
Notes: 1. Examples for BL = 2; column address will be reduced with an
increase in burst length.
2. The “4” = (length of burst) x 2^(number of
column addresses to WRITE FIFO and READ logic).
13
WE#
CK#
CS#
REF#
CK
8
A0–A181
BA0–BA2
ZQ
22
32
I/O gating
DQM mask logic
Column
decoder
Bank 0
memory
array
(8,192 x 32 x 4 x 36)2
8,192
Bank
control
logic
Bank 1
Bank 0
Bank 2
Bank 3
Bank 4
Bank 6
Bank 5
Bank 7
13
61
3 8
8
Refresh
counter
13
18
Mode register
Control
logic
Command
decode
Rowaddress
MUX
Address
register
Columnaddress
counter/
latch
61
144
READ
logic
WRITE
FIFO
and
drivers
144
144
n
n
36
36
36
4
4
36
DQ
latch
QK/QK#
generator
Drivers
DLL
CK/CK#
RCVRS
Input
logic
(0 ....35)
VTT
RTT
ODT control
ODT control
VTT
RTT
ODT control
DQ0–DQ35
QK0–QK1/
QK0#–QK1#
QVLD
DK0–DK1/
DK0#–DK1#
DM
ZQ CAL Output drivers
ZQ CAL
5
11
11
SSEeNnsSeE aAmMpPliLfIiFeIrEsRS
8,192
n
n
36
36
CLK
in
Bank 0
rowaddress
latch
and
decoder
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 11 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Ball Assignments and Descriptions
Ball Assignments and Descriptions
Notes: 1. Reserved for future use. This signal is not connected.
2. Reserved for future use. This signal is internally connected and has
parasitic characteristics
of an address input signal.
3. No function. This signal is internally connected and has parasitic
characteristics of a clock
input signal. This may optionally be connected to GND.
4. Do not use. This signal is internally connected and has parasitic
characteristics of a I/O. This
may optionally be connected to GND. Note that if ODT is enabled, these
pins will be connected
to VTT.
Table 1: 32 Meg x 9 Ball Assignments (Top View) 144-Ball μBGA
1 2 3 4 5 6 7 8 9 10 11 12
A VREF VSS VEXT VSS VSS VEXT TMS TCK
B VDD DNU4 DNU4 VSSQ VSSQ DQ0 DNU4 VDD
C VTT DNU4 DNU4 VDDQ VDDQ DQ1 DNU4 VTT
D A221 DNU4 DNU4 VSSQ VSSQ QK0# QK0 VSS
E A212 DNU4 DNU4 VDDQ VDDQ DQ2 DNU4 A20
F A5 DNU4 DNU4 VSSQ VSSQ DQ3 DNU4 QVLD
G A8 A6 A7 VDD VDD A2 A1 A0
H B2 A9 VSS VSS VSS VSS A4 A3
J NF3 NF3 VDD VDD VDD VDD B0 CK
K DK DK# VDD VDD VDD VDD B1 CK#
L REF# CS# VSS VSS VSS VSS A14 A13
M WE# A16 A17 VDD VDD A12 A11 A10
N A18 DNU4 DNU4 VSSQ VSSQ DQ4 DNU4 A19
P A15 DNU4 DNU4 VDDQ VDDQ DQ5 DNU4 DM
R VSS DNU4 DNU4 VSSQ VSSQ DQ6 DNU4 VSS
T VTT DNU4 DNU4 VDDQ VDDQ DQ7 DNU4 VTT
U VDD DNU4 DNU4 VSSQ VSSQ DQ8 DNU4 VDD
V VREF ZQ VEXT VSS VSS VEXT TDO TDI
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 12 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Ball Assignments and Descriptions
Notes: 1. Reserved for future use. This may optionally be connected to
GND.
2. Reserved for future use. This signal is internally connected and has
parasitic characteristics
of an address input signal. This may optionally be connected to GND.
3. No function. This signal is internally connected and has parasitic
characteristics of a clock
input signal. This may optionally be connected to GND.
4. Do not use. This signal is internally connected and has parasitic
characteristics of a I/O. This
may optionally be connected to GND. Note that if ODT is enabled, these
pins will be connected
to VTT.
Table 2: 16 Meg x 18 Ball Assignments (Top View) 144-Ball μBGA
1 2 3 4 5 6 7 8 9 10 11 12
A VREF VSS VEXT VSS VSS VEXT TMS TCK
B VDD DNU4 DQ4 VSSQ VSSQ DQ0 DNU4 VDD
C VTT DNU4 DQ5 VDDQ VDDQ DQ1 DNU4 VTT
D A221 DNU4 DQ6 VSSQ VSSQ QK0# QK0 VSS
E A212 DNU4 DQ7 VDDQ VDDQ DQ2 DNU4 A202
F A5 DNU4 DQ8 VSSQ VSSQ DQ3 DNU4 QVLD
G A8 A6 A7 VDD VDD A2 A1 A0
H B2 A9 VSS VSS VSS VSS A4 A3
J NF3 NF3 VDD VDD VDD VDD B0 CK
K DK DK# VDD VDD VDD VDD B1 CK#
L REF# CS# VSS VSS VSS VSS A14 A13
M WE# A16 A17 VDD VDD A12 A11 A10
N A18 DNU4 DQ14 VSSQ VSSQ DQ9 DNU4 A19
P A15 DNU4 DQ15 VDDQ VDDQ DQ10 DNU4 DM
R VSS QK1 QK1# VSSQ VSSQ DQ11 DNU4 VSS
T VTT DNU4 DQ16 VDDQ VDDQ DQ12 DNU4 VTT
U VDD DNU4 DQ17 VSSQ VSSQ DQ13 DNU4 VDD
V VREF ZQ VEXT VSS VSS VEXT TDO TDI
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 13 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Ball Assignments and Descriptions
Notes: 1. Reserved for future use. This may optionally be connected to
GND.
2. Reserved for future use. This signal is internally connected and has
parasitic characteristics
of an address input signal. This may optionally be connected to GND.
Table 3: 8 Meg x 36 Ball Assignments (Top View) 144-Ball μBGA
1 2 3 4 5 6 7 8 9 10 11 12
A VREF VSS VEXT VSS VSS VEXT TMS TCK
B VDD DQ8 DQ9 VSSQ VSSQ DQ1 DQ0 VDD
C VTT DQ10 DQ11 VDDQ VDDQ DQ3 DQ2 VTT
D A22 DQ12 DQ13 VSSQ VSSQ QK0# QK0 VSS
E A212 DQ14 DQ15 VDDQ VDDQ DQ5 DQ4 A202
F A5 DQ16 DQ17 VSSQ VSSQ DQ7 DQ6 QVLD
G A8 A6 A7 VDD VDD A2 A1 A0
H B2 A9 VSS VSS VSS VSS A4 A3
J DK0 DK0# VDD VDD VDD VDD B0 CK
K DK1 DK1# VDD VDD VDD VDD B1 CK#
L REF# CS# VSS VSS VSS VSS A14 A13
M WE# A16 A17 VDD VDD A12 A11 A10
N A18 DQ24 DQ25 VSSQ VSSQ DQ35 DQ34 A192
P A15 DQ22 DQ23 VDDQ VDDQ DQ33 DQ32 DM
R VSS QK1 QK1# VSSQ VSSQ DQ31 DQ30 VSS
T VTT DQ20 DQ21 VDDQ VDDQ DQ29 DQ28 VTT
U VDD DQ18 DQ19 VSSQ VSSQ DQ27 DQ26 VDD
V VREF ZQ VEXT VSS VSS VEXT TDO TDI
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 14 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Ball Assignments and Descriptions
Table 4: Ball Descriptions
Symbol Type Description
A0–A20 Input Address inputs: A0–A20 define the row
and column addresses for READ and WRITE operations.
During a MODE REGISTER SET, the address inputs define the register
settings. They are sampled
at the rising edge of CK.
BA0–BA2 Input Bank address inputs: Select to which internal
bank a command is being applied.
CK, CK# Input Input clock: CK and CK# are differential input clocks.
Addresses and commands are latched on
the rising edge of CK. CK# is ideally 180 degrees out of phase with CK.
CS# Input Chip select: CS# enables the command decoder when LOW and
disables it when HIGH. When
the command decoder is disabled, new commands are ignored, but internal
operations continue.
DQ0–DQ35 Input Data input: The DQ signals form the 36-bit
data bus. During READ commands, the data is
referenced to both edges of QKx. During WRITE commands, the data is
sampled at both edges of
DK.
DK, DK# Input Input data clock: DK and DK# are the differential input
data clocks. All input data is referenced
to both edges of DK. DK# is ideally 180 degrees out of phase with DK.
For the x36 device, DQ0–
DQ17 are referenced to DK0 and DK0# and DQ18–DQ35 are
referenced to DK1 and DK1#. For the
x9 and x18 devices, all DQs are referenced to DK and DK#. All DKx and
DKx# pins must always be
supplied to the device.
DM Input Input data mask: The DM signal is the input mask signal for
WRITE data. Input data is masked
when DM is sampled HIGH. DM is sampled on both edges of DK (DK1 for the
x36 configuration).
Tie signal to ground if not used.
TCK Input IEEE 1149.1 clock input: This ball must be tied to VSS if the
JTAG function is not used.
TMS, TDI Input IEEE 1149.1 test inputs: These balls may be left as no
connects if the JTAG function is not used.
WE#, REF# Input Command inputs: Sampled at the positive edge of CK, WE#
and REF# define (together with
CS#) the command to be executed.
VREF Input Input reference voltage: Nominally VDDQ/2. Provides a
reference voltage for the input buffers.
ZQ I/O External impedance (25–60Ω): This signal is
used to tune the device outputs to the system data
bus impedance. DQ output impedance is set to 0.2 × RQ, where
RQ is a resistor from this signal to
ground. Connecting ZQ to GND invokes the minimum impedance mode.
Connecting ZQ to VDD
invokes the maximum impedance mode. Refer to Figure 16 on page 44 to
activate this function.
QKx, QKx# Output Output data clocks: QKx and QKx# are opposite
polarity, output data clocks. They are freerunning,
and during READs, are edge-aligned with data output from the RLDRAM.
QKx# is
ideally 180 degrees out of phase with QKx. For the x36 device, QK0 and
QK0# are aligned with
DQ0–DQ17, and QK1 and QK1# are aligned with
DQ18–DQ35. For the x18 device, QK0 and QK0#
are aligned with DQ0–DQ8, while QK1 and QK1# are aligned with
Q9–Q17. For the x9 device, all
DQs are aligned with QK0 and QK0#.
QVLD Output Data valid: The QVLD pin indicates valid output data. QVLD
is edge-aligned with QKx and QKx#.
TDO Output IEEE 1149.1 test output: JTAG output. This ball may be left
as no connect if the JTAG function
is not used.
VDD Supply Power supply: Nominally, 1.8V. See Table 12 on page 29 for
range.
VDDQ Supply DQ power supply: Nominally, 1.5V or 1.8V. Isolated on the
device for improved noise immunity.
See Table 12 on page 29 for range.
VEXT Supply Power supply: Nominally, 2.5V. See Table 12 on page 29 for
range.
VSS Supply Ground.
VSSQ Supply DQ ground: Isolated on the device for improved noise
immunity.
VTT Supply Power supply: Isolated termination supply. Nominally,
VDDQ/2. See Table 12 on page 29 for
range.
A21 – Reserved for future use: This signal is internally
connected and can be treated as an address
input.
A22 – Reserved for future use: This signal is not connected
and can be connected to ground.
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 15 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Ball Assignments and Descriptions
DNU – Do not use: These balls may be connected to ground.
Note that if ODT is enabled, these pins will
be connected to VTT.
NF – No function: These balls can be connected to ground.
Table 4: Ball Descriptions (continued)
Symbol Type Description
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 16 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Package Dimensions
Package Dimensions
Figure 7: 144-Ball μBGA
Notes: 1. All dimensions are in millimeters.
BALL A1 ID
17.90 CTR
0.44 ±0.05
0.39 ±0.05
BALL A1
BALL A1 ID
0.08 A A
SEATING PLANE
10º TYP
0.08 MAX
10.70 CTR
11.00 ±0.10
4.40 5.50 ±0.05
8.80
2.41 CTR
0.80 TYP
1.00 TYP
8.50 9.25 ±0.05
17.00 15.40 18.50 ±0.10
144X Ø 0.45
DIMENSIONS APPLY
TO SOLDER BALLS
POST REFLOW. THE
PRE-REFLOW BALL
DIAMETER IS 0.50 ON A
0.40 SMD BALL PAD.
BALL A12
MOLD COMPOUND:
EPOXY NOVOLAC
SUBSTRATE MATERIAL:
PLASTIC LAMINATE
SOLDER BALL MATERIAL:
62% Sn, 36% Pb, 2%Ag OR
96.5% Sn, 3%Ag, 0.5% Cu
MOLD
COMPOUND
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 17 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Package Dimensions
Figure 8: 144-Ball FBGA
Notes: 1. All dimensions are in millimeters.
2. The FBGA package is being phased out.
SEATING
PLANE
0.155 ±0.013
0.75 ±0.05
0.10 A A
BALL A1 ID BALL A1 ID
MOLD BALL A1
COMPOUND
MOLD COMPOUND: EPOXY NOVOLAC
SUBSTRATE MATERIAL: PLASTIC LAMINATE
1.20 MAX
SOLDER BALL MATERIAL:
62% Sn, 36% Pb, 2%Ag OR
96.5% Sn, 3%Ag, 0.5%Cu
17.00 18.50 ±0.10
1.00 TYP
4.40
11.00 ±0.10
5.50 ±0.05
8.50
9.25 ±0.05
BALL A12
144X Ø 0.55
DIMENSIONS APPLY TO
SOLDER BALLS POST
REFLOW. THE PRE-REFLOW
BALL IS Ø0.50 ON A Ø0.40
NSMD BALL PAD.
C L
C L
8.80
2.20 ±0.025
CTR
0.80 TYP
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 18 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – IDD
Electrical Specifications – IDD
Table 5: IDD Operating Conditions and Maximum Limits
Description Condition Symbol -25 -33 -5 Units
Standby current tCK = idle; All banks idle; No inputs toggling ISB1
(VDD) x9/x18 48 48 48 mA
ISB1 (VDD) x36 48 48 48
ISB1 (VEXT) 26 26 26
Active standby
current
CS# = 1; No commands; Bank address
incremented and half address/data change
once every 4 clock cycles
ISB2 (VDD) x9/x18 288 233 189 mA
ISB2 (VDD) x36 288 233 189
ISB2 (VEXT) 26 26 26
Operational
current
BL = 2; Sequential bank access; Bank transitions
once every tRC; Half address transitions once
every tRC; Read followed by write sequence;
continuous data during WRITE commands
IDD1 (VDD) x9/x18 348 305 255 mA
IDD1 (VDD) x36 374 343 292
IDD1 (VEXT) 41 36 36
Operational
current
BL = 4; Sequential bank access; Bank transitions
once every tRC; Half address transitions once
every tRC; Read followed by write sequence;
Continuous data during WRITE commands
IDD2 (VDD) x9/x18 362 319 269 mA
IDD2 (VDD) x36 418 389 339
IDD2 (VEXT) 48 42 42
Operational
current
BL = 8; Sequential bank access; Bank transitions
once every tRC; half address transitions once
every tRC; Read followed by write sequence;
continuous data during WRITE commands
IDD3 (VDD) x9/x18 408 368 286 mA
IDD3 (VDD) x36 n/a n/a n/a
IDD3 (VEXT) 55 48 48
Burst refresh
current
Eight-bank cyclic refresh; Continuous address/
data; Command bus remains in refresh for all
eight banks
IREF1 (VDD) x9/x18 785 615 430 mA
IREF1 (VDD) x36 785 615 430
IREF1 (VEXT) 133 111 105
Distributed
refresh current
Single-bank refresh; Sequential bank access;
Half address transitions once every tRC,
continuous data
IREF2 (VDD) x9/x18 325 267 221 mA
IREF2 (VDD) x36 326 281 227
IREF2 (VEXT) 48 42 42
Operating burst
write current
example
BL = 2; Cyclic bank access; Half of address bits
change every clock cycle; Continuous data;
measurement is taken during continuous
WRITE
IDD2W (VDD)
x9/x18
970 819 597 mA
IDD2W (VDD) x36 990 914 676
IDD2W (VEXT) 100 90 69
Operating burst
write current
example
BL = 4; Cyclic bank access; Half of address bits
change every 2 clock cycles; Continuous data;
Measurement is taken during continuous
WRITE
IDD4W (VDD)
x9/x18
779 609 439 mA
IDD4W (VDD) X36 882 790 567
IDD4W (VEXT) 88 77 63
Operating burst
write current
example
BL = 8; Cyclic bank access; Half of address bits
change every 4 clock cycles; continuous data;
Measurement is taken during continuous
WRITE
IDD8W (VDD)
x9/x18
668 525 364 mA
IDD8W (VDD) x36 n/a n/a n/a
IDD8W (VEXT) 60 51 40
Operating burst
read current
example
BL = 2; Cyclic bank access; Half of address bits
change every clock cycle; Measurement is taken
during continuous READ
IDD2R (VDD) x9/x18 860 735 525 mA
IDD2R (VDD) x36 880 795 565
IDD2R (VEXT) 100 90 69
Operating burst
read current
example
BL = 4; Cyclic bank access; Half of address bits
change every 2 clock cycles; Measurement is
taken during continuous READ
IDD4R (VDD) x9/x18 680 525 380 mA
IDD4R (VDD) x36 730 660 455
IDD4R (VEXT) 88 77 63
Operating burst
read current
example
BL = 8; Cyclic bank access; Half of address bits
change every 4 clock cycles; Measurement is
taken during continuous READ
IDD8R (VDD) x9/x18 570 450 310 mA
IDD8R (VDD) x36 n/a n/a n/a
IDD8R (VEXT) 60 51 40
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 19 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – IDD
Notes: 1. IDD specifications are tested after the device is properly
initialized. +0°C ≤ TC ≤ +95°C; +1.7V
≤ VDD ≤ +1.9V, +2.38V ≤ VEXT ≤ +2.63V,
+1.4V ≤ VDDQ ≤ VDD, VREF = VDDQ/2.
2. tCK = tDK = MIN, tRC = MIN.
3. Input slew rate is specified in Table 8 on page 19.
4. Definitions for IDD conditions:
4a. LOW is defined as VIN ≤ VIL(AC) MAX.
4b. HIGH is defined as VIN ≥ VIH(AC) MIN.
4c. Stable is defined as inputs remaining at a HIGH or LOW level.
4d. Floating is defined as inputs at VREF = VDDQ/2.
4e. Continuous data is defined as half the DQ signals changing between
HIGH and LOW
every half clock cycle (twice per clock).
4f. Continuous address is defined as half the address signals changing
between HIGH and
LOW every clock cycle (once per clock).
4g. Sequential bank access is defined as the bank address incrementing
by one every tRC.
4h. Cyclic bank access is defined as the bank address incrementing by
one for each command
access. For BL = 2 this is every clock, for BL = 4 this is every other
clock, and for
BL = 8 this is every fourth clock.
5. CS# is HIGH unless a READ, WRITE, AREF, or MRS command is
registered. CS# never transitions
more than once per clock cycle.
6. IDD parameters are specified with ODT disabled.
7. Tests for AC timing, IDD, and electrical AC and DC characteristics
may be conducted at nominal
reference/supply voltage levels, but the related specifications and
device operations are
tested for the full voltage range specified.
8. IDD tests may use a VIL-to-VIH swing of up to 1.5V in the test
environment, but input timing
is still referenced to VREF (or to the crossing point for CK/CK#), and
parameter specifications
are tested for the specified AC input levels under normal use
conditions. The minimum slew
rate for the input signals used to test the device is 2 V/ns in the
range between VIL(AC) and
VIH(AC).
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 20 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – AC and DC
Electrical Specifications – AC and DC
Absolute Maximum Ratings
Stresses greater than those listed in Table 6 may cause permanent
damage to the device.
This is a stress rating only, and functional operation of the device at
these or any other
conditions outside those indicated in the operational sections of this
specification is not
implied. Exposure to absolute maximum rating conditions for extended
periods may
affect reliability.
AC and DC Operating Conditions
Notes: 1. All voltages referenced to VSS (GND).
2. Overshoot: VIH(AC) ≤ VDD + 0.7V for t ≤ tCK/2.
Undershoot: VIL(AC) ≥ –0.5V for t ≤ tCK/2.
During
normal operation, VDDQ must not exceed VDD. Control input signals may
not have pulse
widths less than tCK/2 or operate at frequencies exceeding tCK (MAX).
3. VDDQ can be set to a nominal 1.5V ± 0.1V or 1.8V
± 0.1V supply.
4. Typically the value of VREF is expected to be 0.5 x VDDQ of the
transmitting device. VREF is
expected to track variations in VDDQ.
5. Peak-to-peak AC noise on VREF must not exceed ±2 percent
VREF(DC).
6. VREF is expected to equal VDDQ/2 of the transmitting device and to
track variations in the
DC level of the same. Peak-to-peak noise (non-common mode) on VREF may
not exceed ±2
percent of the DC value. Thus, from VDDQ/2, VREF is allowed
±2 percent VDDQ/2 for DC error
and an additional ±2 percent VDDQ/2 for AC noise. This
measurement is to be taken at the
nearest VREF bypass capacitor.
Table 6: Absolute Maximum Ratings
Parameter Min Max Units
I/O voltage –0.3 VDDQ + 0.3 V
Voltage on VEXT supply relative to VSS –0.3 +2.8 V
Voltage on VDD supply relative to VSS –0.3 +2.1 V
Voltage on VDDQ supply relative to VSS –0.3 +2.1 V
Table 7: DC Electrical Characteristics and Operating Conditions
Note 1 applies to the entire table; Unless otherwise noted:
+0°C ≤ TC ≤ +95°C; +1.7V ≤ VDD
≤ +1.9V
Description Conditions Symbol Min Max Units Notes
Supply voltage – VEXT 2.38 2.63 V
Supply voltage – VDD 1.7 1.9 V 2
Isolated output buffer supply – VDDQ 1.4 VDD V 2, 3
Reference voltage – VREF 0.49 × VDDQ 0.51
× VDDQ V 4, 5, 6
Termination voltage – VTT 0.95 × VREF 1.05
× VREF V 7, 8
Input high (logic 1) voltage – VIH VREF + 0.1 VDDQ + 0.3 V 2
Input low (logic 0) voltage – VIL VSSQ - 0.3 VREF - 0.1 V 2
Output high current VOH = VDDQ/2 IOH (VDDQ/2)/
(1.15 × RQ/5)
(VDDQ/2)/
(0.85 × RQ/5)
A 9, 10, 11
Output low current VOL = VDDQ/2 IOL (VDDQ/2)/
(1.15 × RQ/5)
(VDDQ/2)/
(0.85 × RQ/5)
A 9, 10, 11
Clock input leakage current 0V ≤ VIN ≤ VDD ILC
–5 5 μA
Input leakage current 0V ≤ VIN ≤ VDD ILI –5 5
μA
Output leakage current 0V ≤ VIN ≤ VDDQ ILO –5 5
μA
Reference voltage current – IREF –5 5 μA
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 21 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – AC and DC
7. VTT is expected to be set equal to VREF and must track variations in
the DC level of VREF.
8. On-die termination may be selected using mode register bit 9 (see
Figure 11 on page 32). A
resistance RTT from each data input signal to the nearest VTT can be
enabled.
RTT = 125–185Ω at 95°C TC.
9. IOH and IOL are defined as absolute values and are measured at
VDDQ/2. IOH flows from the
device, IOL flows into the device.
10. If MRS bit A8 is 0, use RQ = 250Ω in the equation in lieu
of presence of an external impedance
matched resistor.
11. For VOL and VOH, refer to the RLDRAM II HSPICE or IBIS driver
models.
Notes: 1. All voltages referenced to VSS (GND).
2. The AC and DC input level specifications are as defined in the HSTL
standard (that is, the
receiver will effectively switch as a result of the signal crossing the
AC input level, and will
remain in that state as long as the signal does not ring back above
[below] the DC input
LOW [HIGH] level).
3. The minimum slew rate for the input signals used to test the device
is 2 V/ns in the range
between VIL(AC) and VIH(AC). See illustration below:
Table 8: Input AC Logic Levels
Notes 1–3 apply to entire table; Unless otherwise noted:
+0°C ≤ TC ≤ +95°C; +1.7V ≤ VDD
≤ +1.9V
Description Symbol Min Max Units
Input high (logic 1) voltage VIH VREF + 0.2 – V
Input low (logic 0) voltage VIL – VREF - 0.2 V
VIH(AC) MIN
VIL(AC) MAX
Rise time:
2 V/ns
Fall time:
2 V/ns
VDDQ
GND
VSWING
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 22 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – AC and DC
Notes: 1. DKx and DKx# have the same requirements as CK and CK#.
2. All voltages referenced to VSS (GND).
3. The CK/CK# input reference level (for timing referenced to CK/CK#)
is the point at which CK
and CK# cross. The input reference level for signals other than CK/CK#
is VREF.
4. CK and CK# input slew rate must be ≥2 V/ns (≥4 V/ns if
measured differentially).
5. VID is the magnitude of the difference between the input level on CK
and the input level on
CK#.
6. The value of VIX is expected to equal VDDQ/2 of the transmitting
device and must track variations
in the DC level of the same.
Figure 9: Clock Input
Notes: 1. CK and CK# must cross within this region.
2. CK and CK# must meet at least VID(DC) MIN when static and centered
around VDDQ/2.
3. Minimum peak-to-peak swing.
4. It is a violation to tristate CK and CK# after the part is
initialized.
Table 9: Differential Input Clock Operating Conditions
Notes 1–4 apply to the entire table; Unless otherwise noted:
+0°C ≤ TC ≤ +95°C; +1.7V ≤ VDD
≤ +1.9V
Parameter/Condition Symbol Min Max Units Notes
Clock input voltage level: CK and CK# VIN(DC) –0.3 VDDQ + 0.3
V
Clock input differential voltage: CK and CK# VID(DC) 0.2 VDDQ + 0.6 V 5
Clock input differential voltage: CK and CK# VID(AC) 0.4 VDDQ + 0.6 V 5
Clock input crossing point voltage: CK and CK# VIX(AC) VDDQ/2 - 0.15
VDDQ/2 + 0.15 V 6
CK
CK#
VIN(DC) MAX
1
Maximum clock level
VIN(DC) MIN Minimum clock level
VDDQ/2
VDDQ/2 + 0.15
VDDQ/2 - 0.15 X
X
VID(AC)3
VID(DC)2
VIX(AC) MAX
VIX(AC) MIN
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 23 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – AC and DC
Input Slew Rate Derating
Table 10 on page 22 and Table 11 on page 23 define the address,
command, and data
setup and hold derating values. These values are added to the default
tAS/tCS/tDS and
tAH/tCH/tDH specifications when the slew rate of any of these input
signals is less than
the 2 V/ns the nominal setup and hold specifications are based upon.
To determine the setup and hold time needed for a given slew rate, add
the tAS/tCS
default specification to the “tAS/tCS VREF to CK/CK#
Crossing” and the tAH/tCH default
specification to the "tAH/tCH CK/CK# Crossing to VREF" derated values
on Table 10. The
derated data setup and hold values can be determined in a like manner
using the “tDS
VREF to CK/CK# Crossing” and “tDH to CK/CK#
Crossing to VREF” values on Table 11. The
derating values on Table 10 and Table 11 apply to all speed grades.
The setup times on Table 10 and Table 11 represent a rising signal. In
this case, the time
from which the rising signal crosses VIH(AC) MIN to the CK/CK# cross
point is static and
must be maintained across all slew rates. The derated setup timing
represents the point
at which the rising signal crosses VREF(DC) to the CK/CK# cross point.
This derated value
is calculated by determining the time needed to maintain the given slew
rate and the
delta between VIH(AC) MIN and the CK/CK# cross point. The setup values
in Table 10
and Table 11 are also valid for falling signals (with respect to
VIL[AC] MAX and the CK/
CK# cross point).
The hold times in Table 10 and Table 11 represent falling signals. In
this case, the time
from the CK/CK# cross point to when the signal crosses VIH(DC) MIN is
static and must
be maintained across all slew rates. The derated hold timing represents
the delta
between the CK/CK# cross point to when the falling signal crosses
VREF(DC). This
derated value is calculated by determining the time needed to maintain
the given slew
rate and the delta between the CK/CK# cross point and VIH(DC). The hold
values in
Table 10 and Table 11 are also valid for rising signals (with respect
to VIL[DC] MAX and
the CK and CK# cross point).
Note: The above descriptions also pertain to data setup and hold
derating when CK/CK# are
replaced with DK/DK#.
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 24 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – AC and DC
Table 10: Address and Command Setup and Hold Derating Values
Command/
Address Slew
Rate (V/ns)
tAS/tCS VREF to
CK/CK# Crossing
tAS/tCS VIH(AC)
MIN to CK/CK#
Crossing
tAH/tCH CK/CK#
Crossing to VREF
tAH/tCH CK/CK#
Crossing to
VIH(DC) MIN Units
CK, CK# Differential Slew Rate: 2.0 V/ns
2.0 0 –100 0 –50 ps
1.9 5 –100 3 –50 ps
1.8 11 –100 6 –50 ps
1.7 18 –100 9 –50 ps
1.6 25 –100 13 –50 ps
1.5 33 –100 17 –50 ps
1.4 43 –100 22 –50 ps
1.3 54 –100 27 –50 ps
1.2 67 –100 34 –50 ps
1.1 82 –100 41 –50 ps
1.0 100 –100 50 –50 ps
CK, CK# Differential Slew Rate: 1.5 V/ns
2.0 30 –70 30 –20 ps
1.9 35 –70 33 –20 ps
1.8 41 –70 36 –20 ps
1.7 48 –70 39 –20 ps
1.6 55 –70 43 –20 ps
1.5 63 –70 47 –20 ps
1.4 73 –70 52 –20 ps
1.3 84 –70 57 –20 ps
1.2 97 –70 64 –20 ps
1.1 112 –70 71 –20 ps
1.0 130 –70 80 –20 ps
CK, CK# Differential Slew Rate: 1.0 V/ns
2.0 60 –40 60 10 ps
1.9 65 –40 63 10 ps
1.8 71 –40 66 10 ps
1.7 78 –40 69 10 ps
1.6 85 –40 73 10 ps
1.5 93 –40 77 10 ps
1.4 103 –40 82 10 ps
1.3 114 –40 87 10 ps
1.2 127 –40 94 10 ps
1.1 142 –40 101 10 ps
1.0 160 –40 110 10 ps
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 25 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – AC and DC
Table 11: Data Setup and Hold Derating Values
Data Slew Rate
(V/ns)
tDS VREF to
CK/CK# Crossing
tDS VIH(AC) MIN to
CK/CK# Crossing
tDH CK/CK#
Crossing to VREF
tDH CK/CK#
Crossing to
VIH(DC) MIN Units
DK, DK# Differential Slew Rate: 2.0 V/ns
2.0 0 –100 0 –50 ps
1.9 5 –100 3 –50 ps
1.8 11 –100 6 –50 ps
1.7 18 –100 9 –50 ps
1.6 25 –100 13 –50 ps
1.5 33 –100 17 –50 ps
1.4 43 –100 22 –50 ps
1.3 54 –100 27 –50 ps
1.2 67 –100 34 –50 ps
1.1 82 –100 41 –50 ps
1.0 100 –100 50 –50 ps
DK, DK# Differential Slew Rate: 1.5 V/ns
2.0 30 –70 30 –20 ps
1.9 35 –70 33 –20 ps
1.8 41 –70 36 –20 ps
1.7 48 –70 39 –20 ps
1.6 55 –70 43 –20 ps
1.5 63 –70 47 –20 ps
1.4 73 –70 52 –20 ps
1.3 84 –70 57 –20 ps
1.2 97 –70 64 –20 ps
1.1 112 –70 71 –20 ps
1.0 130 –70 80 –20 ps
DK, DK# Differential Slew Rate: 1.0 V/ns
2.0 60 –40 60 10 ps
1.9 65 –40 63 10 ps
1.8 71 –40 66 10 ps
1.7 78 –40 69 10 ps
1.6 85 –40 73 10 ps
1.5 93 –40 77 10 ps
1.4 103 –40 82 10 ps
1.3 114 –40 87 10 ps
1.2 127 –40 94 10 ps
1.1 142 –40 101 10 ps
1.0 160 –40 110 10 ps
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 26 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – AC and DC
Figure 10: Nominal tAS/tCS/tDS and tAH/tCH/tDH Slew Rate
Notes: 1. Capacitance is not tested on ZQ pin.
2. JTAG pins are tested at 50 MHz.
Table 12: Capacitance
Notes 1–2 apply to entire table
Description Symbol Conditions Min Max Units
Address/control input capacitance CI TA = 25°C; f = 100 MHz
VDD = VDDQ = 1.8V
1.5 2.5 pF
Input/output capacitance (DQ, DM, and QK/QK#) CO 3.5 5.0 pF
Clock capacitance (CK/CK#, and DK/DK#) CCK 2.0 3.0 pF
JTAG pins CJTAG 2.0 5.0 pF
VSWING (MAX)
VREF to AC
region
VREF to DC
region
VREF to DC
region
VREF to AC
region
VREF(DC)
VIL(DC) MAX
VIL(AC) MAX
VSSQ
VIH(DC) MIN
VIH(AC) MIN
VDDQ
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288Mb_RLDRAM_II_CIO_D2.fm - Rev N 5/08 EN 27 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Electrical Specifications – AC and DC
Table 13: AC Electrical Characteristics: -25, -33, -5
Notes 1–4 (page 39) apply to the entire table
Description Symbol
-25 -33 -5
Min Max Min Max Min Max Units Notes
Clock
Input clock cycle time tCK 2.5 5.7 3.3 5.7 5.0 5.7 ns
Input data clock cycle time tDK tCK tCK tCK ns
Clock jitter: period tJITPER –150 150 –200 200
–250 250 ps 5, 6
Clock jitter: cycle-to-cycle tJITCC 300 400 500 ps
Clock HIGH time tCKH,
tDKH
0.45 0.55 0.45 0.55 0.45 0.55 tCK
Clock LOW time tCKL,
tDKL
0.45 0.55 0.45 0.55 0.45 0.55 tCK
Clock to input data clock tCKDK –0.3 0.5 –0.3 1.0
–0.3 1.5 ns
Mode register set cycle time
to any command
tMRSC 6 – 6 – 6 – tCK
Setup Times
Address/command and input
setup time
tAS/tCS 0.4 – 0.5 – 0.8 – ns
Data-in and data mask to DK
setup time
tDS 0.25 – 0.3 – 0.4 – ns
Hold Times
Address/command and input
hold time
tAH/tCH 0.4 – 0.5 – 0.8 – ns
Data-in and data mask to DK
hold time
tDH 0.25 – 0.3 – 0.4 – ns
Data and Data Strobe
Output data clock HIGH time tQKH 0.9 1.1 0.9 1.1 0.9 1.1 tCKH
Output data clock LOW time tQKL 0.9 1.1 0.9 1.1 0.9 1.1 tCKL
Half-clock period tQHP MIN (tQKH,
tQKL)
– MIN (tQKH,
tQKL)
– MIN (tQKH,
tQKL)
–
QK edge to clock edge skew tCKQK –0.25 0.25 –0.3
0.3 –0.5 0.5 ns
QK edge to output data edge tQKQ0,
tQKQ1
–0.2 0.2 –0.25 0.25 –0.3 0.3 ns 7
QK edge to any output data
edge
tQKQ –0.3 0.3 –0.35 0.35 –0.4 0.4 ns 8
QK edge to QVLD tQKVLD –0.3 0.3 –0.35 0.35
–0.4 0.4 ns
Data valid window tDVW tQHP -
(tQKQx
[MAX] +
|tQKQx
[MIN]|)
– tQHP -
(tQKQx
[MAX] +
|tQKQx
[MIN]|)
– tQHP -
(tQKQx
[MAX] +
|tQKQx
[MIN]|)
–
Refresh
Average periodic refresh
interval
tREFI – 0.49 – 0.49 – 0.49 μs 9
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Electrical Specifications – AC and DC
Notes
1. All timing parameters are measured relative to the crossing point of
CK/CK#, DK/DK#
and to the crossing point with VREF of the command, address, and data
signals.
2. Outputs measured with equivalent load:
3. Tests for AC timing, IDD, and electrical AC and DC characteristics
may be conducted
at nominal reference/supply voltage levels, but the related
specifications and device
operations are tested for the full voltage range specified.
4. AC timing may use a VIL-to-VIH swing of up to 1.5V in the test
environment, but input
timing is still referenced to VREF (or to the crossing point for
CK/CK#), and parameter
specifications are tested for the specified AC input levels under
normal use conditions.
The minimum slew rate for the input signals used to test the device is
2 V/ns in
the range between VIL(AC) and VIH(AC).
5. Clock phase jitter is the variance from clock rising edge to the
next expected clock rising
edge.
6. Frequency drift is not allowed.
7. tQKQ0 is referenced to DQ0–DQ17 for the x36 configuration
and DQ0–DQ8 for the x18
configuration. tQKQ1 is referenced to DQ18–DQ35 for the x36
configuration and
DQ9–DQ17 for the x18 configuration.
8. tQKQ takes into account the skew between any QKx and any Q.
9. To improve efficiency, eight AREF commands (one for each bank) can
be posted to the
RLDRAM on consecutive cycles at periodic intervals of 3.90μs.
10pF
DQ
50Ω
VTT
Test point
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Temperature and Thermal Impedance
Temperature and Thermal Impedance
It is imperative that the RLDRAM device’s temperature
specifications, shown in Table 14,
be maintained in order to ensure the junction temperature is in the
proper operating
range to meet data sheet specifications. An important step in
maintaining the proper
junction temperature is using the device’s thermal impedances
correctly. The thermal
impedances are listed for the packages available.
Incorrectly using thermal impedances can produce significant errors.
Read Micron technical
note TN-00-08, “Thermal Applications” prior to
using the thermal impedances
listed in Table 14. For designs that are expected to last several years
and require the flexibility
to use several DRAM die shrinks, consider using final target theta
values (rather
than existing values) to account for increased thermal impedances from
the die size
reduction.
The RLDRAM device’s safe junction temperature range can be
maintained when the TC
specification is not exceeded. In applications where the
device’s ambient temperature is
too high, use of forced air and/or heat sinks may be required in order
to satisfy the case
temperature specifications.
Notes: 1. MAX storage case temperature; TSTG is measured in the center
of the package, as shown in
Figure 10 on page 29. This case temperature limit is allowed to be
exceeded briefly during
package reflow, as noted in Micron technical note TN-00-15.
2. Temperatures greater than 110°C may cause permanent damage
to the device. This is a
stress rating only and functional operation of the device at or above
this is not implied.
Exposure to absolute maximum rating conditions for extended periods may
affect reliability
of the part.
3. Junction temperature depends upon package type, cycle time, loading,
ambient temperature,
and airflow.
4. MAX operating case temperature; TC is measured in the center of the
package, as shown in
Figure 10 on page 29.
5. Device functionality is not guaranteed if the device exceeds maximum
TC during operation.
6. Both temperature specifications must be satisfied.
Table 14: Temperature Limits
Parameter Symbol Min Max Units Notes
Storage temperature TSTG –55 +150 °C 1
Reliability junction temperature Commercial TJ – +110
°C 2
Industrial – +110 °C 2
Operating junction temperature Commercial TJ 0 +100 °C 3
Industrial –40 +100 °C 3
Operating case temperature Commercial TC 0 +95 °C 4, 5
Industrial –40 +95 °C 4, 5, 6
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Temperature and Thermal Impedance
Notes: Thermal impedance data is based on a number of samples from
multiple lots and should be
viewed as a typical number.
Figure 11: Example Temperature Test Point Location
Table 15: Thermal Impedance
Package Substrate
θ JA (°C/W)
Airflow = 0m/s
θ JA (°C/W)
Airflow = 1m/s
θ JA (°C/W)
Airflow = 2m/s θ JB (°C/W) θ JC
(°C/W)
μBGA 2-layer 41.2 29.1 25.3 14.3 2.27
4-layer 28.2 21.9 19.9 13.6
FBGA 2-layer 42.2 29.3 25.3 16.4 2.6
4-layer 28.5 22.0 19.9 13.4
11.00
5.50
18.50
9.25
Test point
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Commands
Commands
The following table provides descriptions of the valid commands of the
RLDRAM. All
input states or sequences not shown are illegal or reserved. All
command and address
inputs must meet setup and hold times around the rising edge of CK.
Notes: 1. When the chip is deselected, internal NOP commands are
generated and no commands are
accepted.
2. n = 20.
Notes: 1. X = “Don’t Care;” H = logic
HIGH; L = logic LOW; A = valid address; BA = valid bank address.
2. n = 20.
3. Only A0–A17 are used for the MRS command.
4. Address width varies with burst length; see Table 19 on page 34 for
details.
Table 16: Description of Commands
Command Description Notes
DSEL/NOP The NOP command is used to perform a no operation to the
RLDRAM, which essentially
deselects the chip. Use the NOP command to prevent unwanted commands
from being
registered during idle or wait states. Operations already in progress
are not affected. Output
values depend on command history.
1
MRS The mode register is set via the address inputs A0–A17.
See Figure 11 on page 32 for further
information. The MRS command can only be issued when all banks are idle
and no bursts are
in progress.
READ The READ command is used to initiate a burst read access to a
bank. The value on the BA0–
BA2 inputs selects the bank, and the address provided on inputs
A0–An selects the data
location within the bank.
2
WRITE The WRITE command is used to initiate a burst write access to a
bank. The value on the BA0–
BA2 inputs selects the bank, and the address provided on inputs
A0–An selects the data
location within the bank. Input data appearing on the DQ is written to
the memory array
subject to the DM input logic level appearing coincident with the data.
If the DM signal is
registered LOW, the corresponding data will be written to memory. If
the DM signal is
registered HIGH, the corresponding data inputs will be ignored (that
is, this part of the data
word will not be written).
2
AREF The AREF command is used during normal operation of the RLDRAM to
refresh the memory
content of a bank. The command is nonpersistent, so it must be issued
each time a refresh is
required. The value on the BA0–BA2 inputs selects the bank.
The refresh address is
generated by an internal refresh controller, effectively making each
address bit a “Don’t
Care” during the AREF command. See “AUTO REFRESH
(AREF)” on page 39 for more details.
Table 17: Command Table
Notes 1–2 apply to the entire table
Operation Code CS# WE# REF# A0–An2 BA0–BA2 Notes
Device DESELECT/no operation DSEL/NOP H X X X X
MRS MRS L L L OPCODE X 3
READ READ L H H A BA 4
WRITE WRITE L L H A BA 4
AUTO REFRESH AREF L H L X BA
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Commands
MODE REGISTER SET (MRS)
The mode register set stores the data for controlling the operating
modes of the memory.
It programs the RLDRAM configuration, burst length, test mode, and I/O
options.
During an MRS command, the address inputs A0–A17 are sampled
and stored in the
mode register. After issuing a valid MRS command, tMRSC must be met
before any
command can be issued to the RLDRAM. This statement does not apply to
the consecutive
MRS commands needed for internal logic reset during the initialization
routine. The
MRS command can only be issued when all banks are idle and no bursts
are in progress.
Note: The data written by the prior burst length is not guaranteed to
be accurate when the
burst length of the device is changed.
DON’T CARE
CK
CK#
CS#
WE#
REF#
ADDRESS OPCODE
BANK
ADDRESS
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Commands
Figure 11: Mode Register Definition in Nonmultiplexed Address Mode
Notes: 1. A10–A17 must be set to zero; A18–An =
“Don’t Care.”
2. A6 not used in MRS.
3. BL = 8 is not available.
4. DLL RESET turns the DLL off.
5. Available in 576Mb part only.
6. ±30 percent temperature variation.
Reserved1 AM BL Config
A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
Mode Register (Mx)
Address Bus
9 8 7 6 5 4 3 2 1 0
A17
17–10
Configuration
13 (default)
13
2
3
43,5
55
Reserved
Reserved
M0
0
1
0
1
0
1
0
1
M1
0
0
1
1
0
0
1
1
M2
0
0
0
0
1
1
1
1
M5
0
1
Address MUX
Nonmultiplexed (default)
Multiplexed
M8
0
1
Drive Impedance
Internal 50Ω6 (default)
External (ZQ)
M9
0
1
On-Die Termination
Off (default)
On
ODT DLL NA2
M3
0
1
0
1
Burst Length
2 (default)
4
8
Reserved
M4
0
0
1
1
IM
. . .
M7
0
1
DLL Reset
DLL reset4 (default)
DLL enabled
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Commands
Configuration Tables
Table 18 shows the different configurations that can be programmed into
the mode
register. The WRITE latency is equal to the READ latency plus one in
each configuration
in order to maximize data bus utilization. Bits M0, M1, and M2 are used
to select the
configuration during the MRS command.
Notes: 1. BL = 8 is not available.
Burst Length (BL)
Burst length is defined by M3 and M4 of the mode register. Read and
write accesses to
the RLDRAM are burst-oriented, with the burst length being programmable
to 2, 4, or 8.
Figure 12 on page 34 illustrates the different burst lengths with
respect to a READ
command. Changes in the burst length affect the width of the address
bus (see Table 19
on page 34 for details).
Note: The data written by the prior burst length is not guaranteed to
be accurate when the
burst length of the device is changed.
Table 18: Cycle Time and READ/WRITE Latency Configuration Table
Parameter
Configuration
11 2 3 Units
tRC 4 6 8 tCK
tRL 4 6 8 tCK
tWL 5 7 9 tCK
Valid frequency range 200–175 300–175
400–175 MHz
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Commands
Figure 12: Read Burst Lengths
Notes: 1. DO an = data-out from bank a and address an.
2. Subsequent elements of data-out appear after DO n.
3. Shown with nominal tCKQK.
Address Multiplexing
Although the RLDRAM has the ability to operate with an SRAM interface
by accepting
the entire address in one clock, an option in the mode register can be
set so that it functions
with multiplexed addresses, similar to a traditional DRAM. In
multiplexed address
mode, the address can be provided to the RLDRAM in two parts that are
latched into the
memory with two consecutive rising clock edges. This provides the
advantage of only
needing a maximum of 11 address balls to control the RLDRAM, reducing
the number of
Table 19: Address Widths at Different Burst Lengths
Burst Length x9 x18 x36
2 A0–A20 A0–A19 A0–A18
4 A0–A19 A0–A18 A0–A17
8 A0–A18 A0–A17 n/a
COMMAND
ADDRESS
DQ
QVLD
DO
an
QK
QK#
QK
QK#
QK
QK#
RL = 4
CK
CK#
DQ DO
an
TRANSITIONING DATA DON’T CARE
DQ DO
an
READ NOP NOP NOP NOP NOP NOP NOP
Bank a,
Col n
T0 T1 T2 T3 T4 T4n T5 T5n T6 T6n T7 T7n
QVLD
QVLD
BL = 8 BL = 4 BL = 2
NOP
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Commands
signals on the controller side. The data bus efficiency in continuous
burst mode is only
affected when using the BL = 2 setting since the device requires two
clocks to read and
write the data. The bank addresses are delivered to the RLDRAM at the
same time as the
WRITE and READ command and the first address part, Ax. Table 21 on page
60 and
Table 22 on page 61 show the addresses needed for both the first and
second rising clock
edges (Ax and Ay, respectively). The AREF command does not require an
address on the
second rising clock edge, as only the bank address is needed during
this command.
Because of this, AREF commands may be issued on consecutive clocks.
The multiplexed address option is available by setting bit M5 to
“1” in the mode register.
Once this bit is set, the READ, WRITE, and MRS commands follow the
format described
in Figure 35 on page 57. Further information on operation with
multiplexed addresses
can be seen in “Multiplexed Address Mode” on page
57.
DLL RESET
DLL RESET is selected with bit M7 of the mode register as is shown in
Figure 11 on
page 32. The default setting for this option is LOW, whereby the DLL is
disabled. Once
M7 is set HIGH, 1,024 cycles (5μs at 200 MHz) are needed before
a READ command can
be issued. This time allows the internal clock to be synchronized with
the external clock.
Failing to wait for synchronization to occur may result in a violation
of the tCKQK
parameter. A reset of the DLL is necessary if tCK or VDD is changed
after the DLL has
already been enabled. To reset the DLL, an MRS command must be issued
where M7 is
set LOW. After waiting tMRSC, a subsequent MRS command should be issued
whereby
M7 goes HIGH. 1,024 clock cycles are then needed before a READ command
is issued.
Drive Impedance Matching
The RLDRAM II is equipped with programmable impedance output buffers.
This option
is selected by setting bit M8 HIGH during the MRS command. The purpose
of the
programmable impedance output buffers is to allow the user to match the
driver impedance
to the system. To adjust the impedance, an external precision resistor
(RQ) is
connected between the ZQ ball and VSS. The value of the resistor must
be five times the
desired impedance. For example, a 300Ω resistor is required
for an output impedance of
60Ω. The range of RQ is 125–300Ω, which
guarantees output impedance in the range of
25–60Ω (within 15 percent).
Output impedance updates may be required because over time variations
may occur in
supply voltage and temperature. When the external drive impedance is
enabled in the
MRS, the device will periodically sample the value of RQ. An impedance
update is transparent
to the system and does not affect device operation. All data sheet
timing and
current specifications are met during an update.
When bit M8 is set LOW during the MRS command, the RLDRAM provides an
internal
impedance at the output buffer of 50Ω (±30 percent
with temperature variation). This
impedance is also periodically sampled and adjusted to compensate for
variation in
supply voltage and temperature.
On-Die Termination (ODT)
ODT is enabled by setting M9 to “1” during an MRS
command. With ODT on, the DQs
and DM are terminated to VTT with a resistance RTT. The command,
address, QVLD, and
clock signals are not terminated. Figure 13 on page 36 shows the
equivalent circuit of a
DQ receiver with ODT. The ODT function is dynamically switched off when
a DQ begins
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Commands
to drive after a READ command is issued. Similarly, ODT is designed to
switch on at the
DQs after the RLDRAM has issued the last piece of data. The DM pin will
always be
terminated. See section entitled “Operations” on
page 40 for relevant timing diagrams.
Notes: 1. All voltages referenced to VSS (GND).
2. VTT is expected to be set equal to VREF and must track variations in
the DC level of VREF.
3. The RTT value is measured at 95°C TC.
Figure 13: On-Die Termination-Equivalent Circuit
Table 20: On-Die Termination DC Parameters
Description Symbol Min Max Units Notes
Termination voltage VTT 0.95 × VREF 1.05 × VREF V
1, 2
On-die termination RTT 125 185 Ω 3
VTT
SW
RTT
DQ
Receiver
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Commands
WRITE
Write accesses are initiated with a WRITE command, as shown in Figure
14. The address
needs to be provided during the WRITE command.
During WRITE commands, data will be registered at both edges of DK
according to the
programmed burst length (BL). The RLDRAM operates with a WRITE latency
(WL) that
is one cycle longer than the programmed READ latency (RL + 1), with the
first valid data
registered at the first rising DK edge WL cycles after the WRITE
command.
Any WRITE burst may be followed by a subsequent READ command (assuming
tRC is
met). To avoid external data bus contention, at least one NOP command
is needed
between the WRITE and READ commands. Figure 21 on page 45 and Figure 22
on
page 46 illustrate the timing requirements for a WRITE followed by a
READ where one
and two intermediary NOPs are required, respectively.
Setup and hold times for incoming DQ relative to the DK edges are
specified as tDS and
tDH. The input data is masked if the corresponding DM signal is HIGH.
The setup and
hold times for the DM signal are also tDS and tDH.
Figure 14: WRITE Command
CK#
CK
WE#
REF#
CS#
ADDRESS A
BANK
ADDRESS
BA
DON’T CARE
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Commands
READ
Read accesses are initiated with a READ command, as shown in Figure 15.
Addresses are
provided with the READ command.
During READ bursts, the memory device drives the read data so it is
edge-aligned with
the QKx signals. After a programmable READ latency, data is available
at the outputs.
One half clock cycle prior to valid data on the read bus, the data
valid signal, QVLD, transitions
from LOW to HIGH. QVLD is also edge-aligned with the QKx signals.
The skew between QK and the crossing point of CK is specified as tCKQK.
tQKQ0 is the
skew between QK0 and the last valid data edge generated at the DQ
signals associated
with QK0 (tQKQ0 is referenced to DQ0–DQ17 for the x36
configuration and DQ0–DQ8
for the x18 configuration). tQKQ1 is the skew between QK1 and the last
valid data edge
generated at the DQ signals associated with QK1 (tQKQ1 is referenced to
DQ18–DQ35 for
the x36 and DQ9–DQ17 for the x18 configuration). tQKQx is
derived at each QKx clock
edge and is not cumulative over time. tQKQ is defined as the skew
between either QK
differential pair and any output data edge.
After completion of a burst, assuming no other commands have been
initiated, output
data (DQ) will go High-Z. The QVLD signal transitions LOW on the last
bit of the READ
burst. Note that if CK/CK# violates the VID(DC) specification while a
READ burst is occurring,
QVLD will remain HIGH until a dummy READ command is issued. The QK
clocks
are free-running and will continue to cycle after the read burst is
complete. Back-toback
READ commands are possible, producing a continuous flow of output data.
The data valid window is derived from each QK transition and is defined
as:
tQHP - (tQKQ [MAX] + |tQKQ [MIN]|). See Figures 28–30 for
illustration.
Any READ burst may be followed by a subsequent WRITE command. Figure 27
on
page 50 illustrate the timing requirements for a READ followed by a
WRITE. Some
systems having long line lengths or severe skews may need additional
idle cycles
inserted between READ and WRITE commands to prevent data bus
contention.
Figure 15: READ Command
DON’T CARE
CK
CK#
CS#
WE#
REF#
A
BA
ADDRESS
BANK
ADDRESS
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Commands
AUTO REFRESH (AREF)
AREF is used to perform a REFRESH cycle on one row in a specific bank.
Because the row
addresses are generated by an internal refresh counter for each bank,
the external
address balls are “Don’t Care.” The bank
addresses must be provided during the AREF
command. The bank address is needed during the AREF command so
refreshing of the
part can effectively be hidden behind commands to other banks. The
delay between the
AREF command and a subsequent command to the same bank must be at least
tRC.
Within a period of 32ms (tREF), the entire device must be refreshed.
For the 288Mb
device, the RLDRAM requires 64K cycles at an average periodic interval
of 0.49μsMAX
(actual periodic refresh interval is 32ms/8K rows/8 banks =
0.488μs). To improve efficiency,
eight AREF commands (one for each bank) can be posted to the RLDRAM at
periodic
intervals of 3.9μs (32ms/8K rows = 3.90μs). Figure 31 on
page 54 illustrates an
example of a refresh sequence.
Figure 16: AUTO REFRESH Command
CK#
CK
WE#
REF#
CS#
ADDRESS
BANK
ADDRESS
BA
DON’T CARE
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Operations
Operations
INITIALIZATION
The RLDRAM must be powered up and initialized in a predefined manner.
Operational
procedures other than those specified may result in undefined
operations or permanent
damage to the device.
The following sequence is used for power-up:
1. Apply power (VEXT, VDD, VDDQ, VREF, VTT) and start clock as soon as
the supply voltages
are stable. Apply VDD and VEXT before or at the same time as VDDQ.1
Apply VDDQ
before or at the same time as VREF and VTT. Although there is no timing
relation
between VEXT and VDD, the chip starts the power-up sequence only after
both voltages
approach their nominal levels. CK/CK# must meet VID(DC) prior to being
applied.2 Apply NOP conditions to command pins. Ensuring CK/CK# meet
VID(DC)
while applying NOP conditions to the command pins guarantees that the
RLDRAM
will not receive unwanted commands during initialization.
2. Maintain stable conditions for 200μs (MIN).
3. Issue at least three consecutive MRS commands: two or more dummies
plus one valid
MRS. The purpose of these consecutive MRS commands is to internally
reset the logic
of the RLDRAM. Note that tMRSC does not need to be met between these
consecutive
commands. It is recommended that all address pins are held LOW during
the dummy
MRS commands.
4. tMRSC after the valid MRS, an AUTO REFRESH command to all 8 banks
(along with
1,024 NOP commands) must be issued prior to normal operation. The
sequence of
the eight AUTO REFRESH commands (with respect to the 1,024 NOP
commands)
does not matter. As is required for any operation, tRC must be met
between an AUTO
REFRESH command and a subsequent VALID command to the same bank. Note
that
older versions of the data sheet required each of these AUTO REFRESH
commands be
separated by 2,048 NOP commands. This properly initializes the RLDRAM
but is no
longer required.
Notes: 1. It is possible to apply VDDQ before VDD. However, when doing
this, the DQs, DM, and
all other pins with an output driver, will go HIGH instead of
tri-stating. These pins will
remain HIGH until VDD is at the same level as VDDQ. Care should be
taken to avoid
bus conflicts during this period.
2. If VID(DC) on CK/CK# can not be met prior to being applied to the
RLDRAM, placing a
large external resistor from CS# to VDD is a viable option for ensuring
the command
bus does not receive unwanted commands during this unspecified state.
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 41 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 17: Power-Up/Initialization Sequence
Notes: 1. Recommend all address pins held LOW during dummy MRS
commands.
2. A10–A17 must be LOW.
3. DLL must be reset if tCK or VDD are changed.
4. CK and CK# must be separated at all times to prevent bogus commands
from being issued.
5. The sequence of the eight AUTO REFRESH commands (with respect to the
1,024 NOP commands)
does not matter. As is required for any operation, tRC must be met
between an
AUTO REFRESH command and a subsequent VALID command to the same bank.
RTT
BANK ADDRESS
Power-up:
VDD and stable
clock (CK, CK#)
T = 200μs (MIN)
DM
(
)
(
)
(
)
(
)
ADDRESS
VTT
VREF
VDDQ
COMMAND NOP NOP NOP
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
DON’T CARE
VDD
VEXT
DQ
tMRSC Refresh
all banks5
1,024 NOP
commands
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
MRS REF
CODE2
Bank 0 Bank 7
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
MRS MRS
CODE1,2 CODE1,2
(
)
(
)
(
)
(
)
VALID
VALID
VALID
CK
CK#
tCKL
T0 T1 T2
tCKH
tCK
T3
(
)
(
)
(
)
(
)
T4 T5 T6 T7 T8 T9
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
DK
DK#
tDKH tDKL
tDK
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
NOP
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
REF
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
High-Z (
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
Indicates a break in
time scale
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 42 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 18: Power-Up/Initialization Flow Chart
Notes: 1. The sequence of the eight AUTO REFRESH commands (with respect
to the 1,024 NOP commands)
does not matter. As is required for any operation, tRC must be met
between an
AUTO REFRESH command and a subsequent VALID command to the same bank.
VDD, and VEXT ramp
VDDQ ramp
Apply VREF and VTT
Apply stable CK/CK# and DK/DK#
Issue MRS command—A10–A17 must be LOW
Wait at least 200μs
Issue MRS command—A10–A17 must be LOW
Desired load mode register with A10–A17 LOW
Assert NOP for tMRSC
Issue AUTO REFRESH to bank 0
Issue AUTO REFRESH to bank 1
Issue AUTO REFRESH to bank 4
Issue AUTO REFRESH to bank 5
Issue AUTO REFRESH to bank 6
Issue AUTO REFRESH to bank 7
Valid command
Wait 1,024 NOP commands1
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Issue AUTO REFRESH to bank 3
Issue AUTO REFRESH to bank 2
MRS commands
must be on
consecutive clock
cycles
Voltage rails
can be applied
simultaneously
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 43 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
WRITE
Figure 19: WRITE Burst
Notes: 1. DI an = data-in for bank a and address n; subsequent elements
of burst are applied following
DI an.
2. BL = 4.
tCKDK (NOM)
COMMAND WRITE NOP NOP NOP NOP NOP
ADDRESS Bank a,
Add n
NOP
CK
CK#
T0 T1 T2 T3 T4 T5 T5n T6 T6n T7
DK
DK#
DQ
DM
DI
an
tCKDK (MIN)
DQ
DM
DI
an
tCKDK (MAX)
DQ
DM
DI
an
TRANSITIONING DATA DON’T CARE
WL = 5
DK
DK#
DK
DK#
NOP
WL - tCKDK
WL + tCKDK
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 44 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 20: Consecutive WRITE-to-WRITE
Notes: 1. DI an (or bn) = data-in for bank a (or b) and address n.
2. Three subsequent elements of the burst are applied following DI for
each bank.
3. BL = 4.
4. Each WRITE command may be to any bank; if the second WRITE is to the
same bank,
tRC must be met.
5. Nominal conditions are assumed for specifications not defined.
CK
CK#
COMMAND WRITE NOP WRITE WRITE NOP NOP NOP NOP NOP
Bank a,
Add n
Bank b,
Add n
Bank a,
Add n
NOP
ADDRESS
T0 T1 T2 T3 T4 T5 T6 T6n T5n T7 T8 T9 T8n T7n
DQ
DM
DI
bn
DI
an
DI
an
TRANSITIONING DATA DON’T CARE
WL = 5
tRC = 4
WL = 5
DK
DK#
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 45 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 21: WRITE-to-READ
Notes: 1. DI an = data-in for bank a and address n.
2. DO bn = data-out from bank b and address n.
3. Two subsequent elements of each burst follow DI an and DO bn.
4. BL = 2.
5. Nominal conditions are assumed for specifications not defined.
COMMAND NOP READ NOP NOP NOP
ADDRESS Bank a,
Add n
NOP
CK
CK#
T0 T1 T2 T3 T4 T5 T5n T6 T6n T7
DQ
DM
DI
an
DO
bn
DON’T CARE TRANSITIONING DATA
WL = 5
QVLD
DK#
DK
QK#
QK
NOP
Bank b,
Add n
WRITE
RL = 4
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 46 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 22: WRITE-to-READ (Separated by Two NOPs)
Notes: 1. DI an = data-in for bank a and address n.
2. DO bn = data-out from bank b and address n.
3. One subsequent element of each burst follow both DI an and DO bn.
4. BL = 2.
5. Only one NOP separating the WRITE and READ would have led to
contention on the data
bus because of the input and output data timing conditions being used.
6. Nominal conditions are assumed for specifications not defined.
COMMAND NOP NOP READ NOP NOP NOP
ADDRESS Bank a,
Add n
CK
CK#
T0 T1 T2 T3 T4 T5 T5n T6 T7 T7n T8
DQ
DM
DI
an
DO
bn
TRANSITIONING DATA DON’T CARE
WL = 5
QVLD
DK#
DK
QK#
QK
NOP NOP
Bank b,
Add n
WRITE
RL = 4
tQKQ (MIN)
tCKQK (MIN)
tCKDK (MAX)
tDH
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 47 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 23: WRITE – DM Operation
Notes: 1. DI an = data-in for bank a and address n.
2. Subsequent elements of burst are provided on following clock edges.
3. BL = 4.
4. Nominal conditions are assumed for specifications not defined.
CK
CK#
DK
DK#
tCK tCH tCL
T0 T1 T2 T3 T4 T5 T6 T6n T7 T7n T8
COMMAND NOP WRITE NOP
Bank a,
Add n
NOP NOP NOP NOP NOP
tDKL tDKH
DQ
DM
DI
an
tDS tDH
TRANSITIONING DATA DON’T CARE
ADDRESS
WL = 5
NOP
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 48 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
READ
Figure 24: Basic READ Burst Timing
Notes: 1. DO an = data-out from bank a and address an.
2. Three subsequent elements of the burst are applied following DO an.
3. BL = 4.
4. Nominal conditions are assumed for specifications not defined.
CK
CK#
tCK tCH tCL
tQK tQKH tQKL
tRC = 4
RL = 4
DM
T0 T1 T2 T3 T4 T5 T5n T6 T6n T7
QK
QVLD
QK#
DQ
tCKQK (MIN) tCKQK (MIN)
DO
an
DO
an
COMMAND NOP READ NOP
Bank a
Add n
Bank a
Add n
NOP NOP READ NOP NOP
tQK tQKH tQKL
TRANSITIONING DATA DON’T CARE
ADDRESS
QK
QVLD
QK#
DQ
tCKQK (MAX) tCKQK (MAX)
tQKVLD tQKVLD
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 49 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 25: Consecutive READ Bursts (BL = 2)
Notes: 1. DO an (or bn or cn) = data-out from bank a (or bank b or bank
c) and address n.
2. One subsequent element of the burst from each bank appears after
each DO x.
3. Nominal conditions are assumed for specifications not defined.
4. Example applies only when READ commands are issued to same device.
5. Bank address can be to any bank, but the subsequent READ can only be
to the same bank if
tRC has been met.
6. Data from the READ commands to bank d through bank g will appear on
subsequent clock
cycles that are not shown.
Figure 26: Consecutive READ Bursts (BL = 4)
Notes: 1. DO an (or bn) = data-out from bank a (or bank b) and address
n.
2. Three subsequent elements of the burst from each bank appears after
each DO x.
3. Nominal conditions are assumed for specifications not defined.
4. Example applies only when READ commands are issued to same device.
5. Bank address can be to any bank, but the subsequent READ can only be
to the same bank if
tRC has been met.
6. Data from the READ commands to banks c and d will appear on
subsequent clock cycles
that are not shown.
COMMAND READ READ READ READ READ READ
ADDRESS
CK
CK#
QK
QK#
QVLD
DQ
RL = 4
DO
an
DO
bn
DO
cn
T0 T1 T2 T3
Bank a
Add n
Bank b
Add n
Bank c
Add n
Bank d
Add n
Bank e
Add n
Bank f
Add n
Bank g
Add n
READ
T4 T4n T5 T5n T6 T6n
TRANSITIONING DATA DON’T CARE
COMMAND READ NOP READ NOP READ NOP
ADDRESS Bank a
Add n
Bank b
Add n
Bank c
Add n
Bank d
Add n
CK
CK#
QK
QK#
QVLD
DQ
RL = 4
DO
an
DO
bn
T0 T1 T2 T3
READ
T4 T4n T5 T5n T6 T6n
TRANSITIONING DATA DON’T CARE
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 50 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 27: READ-to-WRITE
Notes: 1. DO an = data-out from bank a and address n.
2. DI bn = data-in for bank b and address n.
3. Three subsequent elements of each burst follow DI bn and each DO an.
4. BL = 4.
5. Nominal conditions are assumed for specifications not defined.
CK
CK#
COMMAND
ADDRESS
QVLD
DQ
READ
T0 T1 T2
TRANSITIONING DATA DON’T CARE
WRITE NOP
T3 T4 T5
NOP NOP
T6
NOP
WL = RL + 1 = 5
T7 T8
NOP NOP
DK
DK#
QK
DM
QK#
DO
an
DI
bn
RL = 4
Bank a,
Add n
Bank b,
Add n
NOP
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 51 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 28: Read Data Valid Window for x9 Device
Notes: 1. tQHP is defined as the lesser of tQKH or tQKL.
2. tQKQ0 is referenced to DQ0–DQ8.
3. Minimum data valid window (tDVW) can be expressed as
tQHP - (tQKQx [MAX] + |tQKQx [MIN]|).
tQHP1 tQHP1 tQHP1 tQHP1
tQKQ0 (MAX)2 tQKQ0 (MAX)2
tQKQ0 (MIN)2 tQKQ0 (MIN)2 tQKQ0 (MIN)2
tQKQ0 (MAX)2
tQKQ0 (MIN)2
tQKQ0 (MAX)2
DQ0
...............
DQ8
DQ (last valid data)
DQ (first valid data)
All DQs and QKs collectively
QK0#
QK0
tDVW3 tDVW3 tDVW3 tDVW3
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 52 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 29: Read Data Valid Window for x18 Device
Notes: 1. tQHP is defined as the lesser of tQKH or tQKL.
2. tQKQ0 is referenced to DQ0–DQ8.
3. Minimum data valid window (tDVW) can be expressed as
tQHP - (tQKQx [MAX] + |tQKQx [MIN]|).
4. tQKQ1 is referenced to DQ9–DQ17.
5. tQKQ takes into account the skew between any QKx and any DQ.
tQHP1 tQHP1 tQHP1 tQHP1
tQKQ0 (MAX)2 tQKQ0 (MAX)2
tQKQ0 (MIN)2 tQKQ0 (MIN)2 tQKQ0 (MIN)2 tQKQ0 (MIN)2
tQKQ0 (MAX)2 tQKQ0 (MAX)2
DQ0
...............
DQ8
DQ (last valid data)
DQ (first valid data)
All DQs and QKs collectively
QK0#
QK0
tDVW3 tDVW3 tDVW3 tDVW3
tQHP1 tQHP1 tQHP1 tQHP1
tQKQ1 (MAX)4 tQKQ1 (MAX)4
tQKQ1 (MIN)4 tQKQ1 (MIN)4 tQKQ1 (MIN)4 tQKQ1 (MIN)4
tQKQ1 (MAX)4 tQKQ1 (MAX)4
DQ9
...............
DQ17
DQ (last valid data)
DQ (first valid data)
All DQs and QKs collectively
QK1#
QK1
tDVW3 tDVW3 tDVW3 tDVW3
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 53 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 30: Read Data Valid Window for x36 Device
Notes: 1. tQHP is defined as the lesser of tQKH or tQKL.
2. tQKQ0 is referenced to DQ0–DQ17.
3. Minimum data valid window, tDVW, can be expressed as
tQHP - (tQKQx [MAX] + |tQKQx [MIN]|).
4. tQKQ1 is referenced to DQ18–DQ35.
5. tQKQ takes into account the skew between any QKx and any DQ.
tQHP1 tQHP1 tQHP1 tQHP1
tQKQ0 (MIN)2
tQKQ0 (MAX)2 tQKQ0 (MAX)2
tQKQ0 (MIN)2
tQKQ0 (MAX)2
tQKQ0 (MIN)2
tQKQ0 (MAX)2
tQKQ0 (MIN)2
DQ0
...............
DQ17
DQ (last valid data)
DQ (first valid data)
All DQs and QKs collectively
QK0#
QK0
tDVW3 tDVW3 tDVW3 tDVW3
Lower word
tQHP1 tQHP1 tQHP1 tQHP1
tQKQ1 (MIN)4
tQKQ1 (MAX)4 tQKQ1 (MAX)4
tQKQ1 (MIN)4
tQKQ1 (MAX)4
tQKQ1(MIN)4
tQKQ1(MAX)4
tQKQ1 (MIN)4
DQ18
...............
DQ35
DQ (last valid data)
DQ (first valid data)
All DQs and QKs collectively
QK1#
QK1
tDVW3 tDVW3 tDVW3 tDVW3
Upper word
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 54 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
AUTO REFRESH
Figure 31: AUTO REFRESH Cycle
Notes: 1. AREFx = AUTO REFRESH command to bank x.
2. ACx = any command to bank x; ACy = any command to bank y.
3. BAx = bank address to bank x; BAy = bank address to bank y.
CK
CK#
COMMAND AREFx AREFy ACx ACy
ADDRESS
BANK BAx BAy
tCK tCH tCL
DQ
DM
DK, DK#
tRC
T0 T1 T2 T3
DON’T CARE
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
Indicates a break in
time scale
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 55 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
On-Die Termination
Figure 32: READ Burst with ODT
Notes: 1. DO an = data out from bank a and address n.
2. DO an is followed by the remaining bits of the burst.
3. Nominal conditions are assumed for specifications not defined.
COMMAND
ADDRESS
DQ
DQ ODT
QVLD
DO
an
DQ ODT off
QK
QK#
QK
QK#
QK
QK#
RL = 4
CK
CK#
DQ
DQ ODT
DQ ODT
DO
an
TRANSITIONING DATA DON’T CARE
DQ DO
an
READ NOP NOP NOP NOP NOP NOP NOP
Bank a,
Col n
T0 T1 T2 T3 T4 T4n T5 T5n T6 T6n T7 T7n
QVLD
QVLD
BL = 8 BL = 4 BL = 2
NOP
DQ ODT on DQ ODT on
DQ ODT on DQ ODT off on
DQ ODT on DQ ODT off DQ ODT on
PDF: 09005aef80a41b59/Source: 09005aef809f284b Micron Technology, Inc.,
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 56 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 33: READ-NOP-READ with ODT
Notes: 1. DO an (or bn) = data-out from bank a (or bank b) and address
n.
2. BL = 2.
3. One subsequent element of the burst appear after DO an and DO bn.
4. Nominal conditions are assumed for specifications not defined.
Figure 34: READ-to-WRITE with ODT
Notes: 1. DO an = data-out from bank a and address n; DI bn = data-in
for bank b and address n.
2. BL = 2.
3. One subsequent element of each burst appears after each DO an and DI
bn.
4. Nominal conditions are assumed for specifications not defined.
COMMAND
ADDRESS
DQ
DQ ODT
QVLD
DO
an
DO
bn
DQ ODT off DQ ODT off
QK
QK#
RL = 4
CK
CK#
TRANSITIONING DATA DON’T CARE
READ NOP READ NOP NOP NOP NOP NOP
Bank a,
Col n
Bank b,
Col n
T0 T1 T2 T3 T4 T4n T5 T6 T6n T7
NOP
DQ ODT on DQ ODT on DQ ODT on
CK#
CK
COMMAND
ADDRESS
RL = 4
DQ
QKx
QKx#
DO
an
DI
bn
READ
Bank a
Add n
WRITE NOP NOP NOP NOP NOP NOP NOP
UNDEFINED DON’T CARE
ODT ODT on ODT off ODT on
WL = 5
DKx#
DKx
Bank b
Add n
T0 T1 T2 T3 T4 T4n T5 T6 T6n T7 T8 T9
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 57 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Multiplexed Address Mode
Figure 35: Command Description in Multiplexed Address Mode
Notes: 1. The minimum setup and hold times of the two address parts are
defined tAS and tAH.
BA BA BA
ADDRESS
BANK
ADDRESS
Ax Ay Ax Ay
BA
Ax Ay
READ WRITE MRS REF
DON’T CARE
CK#
CK
CS#
WE#
REF#
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 58 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 36: Power-Up/Initialization Sequence in Multiplexed Address Mode
Notes: 1. Recommended that all address pins held LOW during dummy MRS
commands.
2. A10–A18 must be LOW.
3. Set address A5 HIGH. This enbles the part to enter multiplexed
address mode when in nonmultiplexed
mode operation. Multiplexed address mode can also be entered at some
later
time by issuing an MRS command with A5 HIGH. Once address bit A5 is set
HIGH, tMRSC
must be satisfied before the two-cycle multiplexed mode MRS command is
issued.
4. Address A5 must be set HIGH. This and the following step set the
desired mode register
once the RLDRAM is in multiplexed address mode.
5. Any command or address.
6. The above sequence must be followed in order to power up the RLDRAM
in the multiplexed
address mode.
7. DLL must be reset if tCK or VDD are changed.
8. CK and CK# must separated at all times to prevent bogus commands
from being issued.
9. The sequence of the eight AUTO REFRESH commands (with respect to the
1,024 NOP commands)
does not matter. As is required for any operation, tRC must be met
between an
AUTO REFRESH command and a subsequent VALID command to the same bank.
RTT
BANK
ADDRESS
Power-up:
VDD and stable
clock (CK, CK#)
T = 200μs (MIN)
DM
(
)
(
)
(
)
(
)
ADDRESS
VTT
VREF
VDDQ
COMMAND NOP NOP NOP
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
DON’T CARE
VDD
VEXT
DQ
tMRSC tMRSC Refresh
all banks9
1,024 NOP
commands
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
MRS MRS
CODE2,3 Ax2,4
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
MRS MRS
CODE1,2 CODE1,2
(
)
(
)
(
)
(
)
VALID5
VALID5
VALID5
CK
CK#
tCKL
T0 T1 T2
tCKH
tCK
T3
(
)
(
)
T4 T5 T6 T7 T8 T9 T10 T11
(
)
(
)
(
)
(
)
DK
DK#
tDKH tDKL
tDK
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
NOP
High-Z (
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
Bank 7
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
NOP REF REF
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
Ay2
Bank 0
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
Indicates a break in
time scale
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 59 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 37: Mode Register Definition in Multiplexed Address Mode
Notes: 1. Bits A10–A18 must be set to zero.
2. BL = 8 is not available.
3. ±30 percent temperature variation.
4. DLL RESET turns the DLL off.
5. Ay8 not used in MRS.
6. Available only in 576Mb device.
7. BA0–BA2 are “Don’t Care.”
8. Addresses A0, A3, A4, A5, A8, and A9 must be set as shown in order
to activate the mode
register in the multiplexed address mode.
18–10 9 8 7 6 5 4 3 2 1 0
Reserved1 AM BL Config
Mode Register (Mx)
Configuration
12 (default)
12
2
3
42,6
56
Reserved
Reserved
M1
0
0
1
1
0
0
1
1
M2
0
0
0
0
1
1
1
1
M5
0
1
Address MUX
Nonmultiplexed (default)
Multiplexed
M8
0
1
Drive Impedance
Internal 50Ω3 (default)
External (ZQ)
M9
0
1
On-Die Termination
Off (default)
On
DLL NA5
M7
0
1
DLL Reset
DLL reset4 (default)
DLL enabled
ODT
M3
0
1
0
1
Burst Length
2 (default)
4
8
Reserved
M4
0
0
1
1
IM
M0
0
1
0
1
0
1
0
1
Ay A18 . . . A9 A8 A4 A3
Ax A9 A8 A5 A4 A3 A0
A10
A18 . . . A10
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 60 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Address Mapping in Multiplexed Address Mode
Notes: 1. X = “Don’t Care.”
Table 21: 288Mb Address Mapping in Multiplexed Address Mode
Data
Width
Burst
Length Ball
Address
A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 A18
x36 2 Ax A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 A18
Ay X A1 A2 X A6 A7 X A11 A12 A16 A15
4 Ax A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 X
Ay X A1 A2 X A6 A7 X A11 A12 A16 A15
x18 2 Ax A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 A18
Ay X A1 A2 X A6 A7 A19 A11 A12 A16 A15
4 Ax A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 A18
Ay X A1 A2 X A6 A7 X A11 A12 A16 A15
8 Ax A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 X
Ay X A1 A2 X A6 A7 X A11 A12 A16 A15
x9 2 Ax A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 A18
Ay A20 A1 A2 X A6 A7 A19 A11 A12 A16 A15
4 Ax A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 A18
Ay X A1 A2 X A6 A7 A19 A11 A12 A16 A15
8 Ax A0 A3 A4 A5 A8 A9 A10 A13 A14 A17 A18
Ay X A1 A2 X A6 A7 X A11 A12 A16 A15
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 61 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Configuration Tables in Multiplexed Address Mode
In multiplexed address mode, the read and write latencies are increased
by one clock
cycle. However, the RLDRAM cycle time remains the same as when in
non-multiplexed
address mode.
Notes: 1. BL = 8 is not available.
REFRESH Command in Multiplexed Address Mode
Similar to other commands when in multiplexed address mode, AREF is
executed on the
rising clock edge following the one on which the command is issued.
However, since
only the bank address is required for AREF, the next command can be
applied on the
following clock. The operation of the AREF command and any other
command is represented
in Figure 38 on page 61.
Figure 38: BURST REFRESH Operation with Multiplexed Addressing
Notes: 1. Any command.
2. Bank n is chosen so that tRC is met.
Table 22: Cycle Time and READ/WRITE Latency Configuration Table in
Multiplexed Mode
Parameter
Configuration
11 2 3 Units
tRC 4 6 8 tCK
tRL 5 7 9 tCK
tWL 6 8 10 tCK
Valid frequency range 200–175 300–175
400–175 MHz
CK
CK#
COMMAND AC1 NOP
Ay
AREF AREF AREF AREF AREF AREF AREF AREF AC1
BANK Bank n Bank 0 Bank 1 Bank 2 Bank 3 Bank 4 Bank 5 Bank 6 Bank 7
Bank n
ADDRESS Ax Ax Ay
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11
DON’T CARE
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 62 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 39: Consecutive WRITE Bursts with Multiplexed Addressing
Notes: 1. Data from the second WRITE command to bank a will appear on
subsequent clock cycles
that are not shown.
2. DI a = data-in for bank a; DI b = data-in for bank b.
3. Three subsequent elements of the burst are applied following DI for
each bank.
4. Each WRITE command may be to any bank; if the second WRITE is to the
same bank, tRC
must be met.
CK
CK#
COMMAND WRITE NOP
Ay
WRITE WRITE NOP NOP NOP NOP NOP
BANK Bank a
Ay
NOP
Bank b Bank a1
ADDRESS Ax Ax Ax Ay
T0 T1 T2 T3 T4 T5 T6 T6n T7 T7n T8 T8n T9
DQ
DM
DI
b
DI
a
TRANSITIONING DATA DON’T CARE
WL = 6
tRC = 4
DK
DK#
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 40: WRITE-to-READ with Multiplexed Addressing
Notes: 1. DI a = data-in for bank a.
2. DO b = data-out from bank b.
3. One subsequent element of each burst follows DI a and DO b.
4. BL = 2.
5. Nominal conditions are assumed for specifications not defined.
6. Bank address can be to any bank, but the subsequent READ can only be
to the same bank if
tRC has been met.
COMMAND NOP READ NOP NOP NOP
ADDRESS Ax Ay
NOP
CK
CK#
T0 T1 T2 T3 T4 T5 T6 T6n T7 T7n
DM
TRANSITIONING DATA DON’T CARE
WL = 6
QVLD
DK#
DK
QK#
QK
NOP
BANK Bank a Bank b
WRITE
RL = 5
DQ DI
a
Ax Ay
DO
b
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 64 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 41: Consecutive READ Bursts with Multiplexed Addressing
Notes: 1. DO a = data-out from bank a.
2. Nominal conditions are assumed for specifications not defined.
3. BL = 4.
4. Three subsequent elements of the burst appear following DO a.
5. Example applies only when READ commands are issued to same device.
6. Bank address can be to any bank, but the subsequent READ can only be
to the same bank if
tRC has been met.
7. Data from the READ commands to banks b through bank d will appear on
subsequent clock
cycles that are not shown.
COMMAND READ NOP READ NOP READ NOP
ADDRESS Ax Ay
Bank a
CK
CK#
QK
QK#
BANK
QVLD
DQ
RL = 5
DO
a
T0 T1 T2 T3
READ
T4 T5 T5n T6 T6n
TRANSITIONING DATA DON’T CARE
Bank b Bank c Bank d
Ax Ay Ax Ay Ax
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 65 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
Operations
Figure 42: READ-to-WRITE with Multiplexed Addressing
Notes: 1. DO an = data-out from bank a.
2. DI bn = data-in for bank b.
3. Nominal conditions are assumed for specifications not defined.
4. BL = 4.
5. Three subsequent elements of the burst are applied following DO an.
6. Three subsequent elements of the burst which appear following DI bn
are not all shown.
7. Bank address can be to any bank, but the WRITE command can only be
to the same bank if
tRC has been met.
CK
CK#
COMMAND
ADDRESS
BANK
QVLD
DQ
READ
T0 T1 T2
TRANSITIONING DATA DON’T CARE
WRITE NOP
T3 T4 T5 T5n
NOP NOP
T6 T6n
NOP
WL = RL + 1 = 6
T7 T8 T8n
NOP NOP
DK
DK#
QK
DM
QK#
DO
an
DI
bn
RL = 5
Ax Ay Ay
Bank a
Ax
Bank b
NOP
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 66 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
IEEE 1149.1 Serial Boundary Scan (JTAG)
RLDRAM incorporates a serial boundary-scan test access port (TAP) for
the purpose of
testing the connectivity of the device once it has been mounted on a
printed circuit
board (PCB). As the complexity of PCB high-density surface mounting
techniques
increases, the boundary-scan architecture is a valuable resource for
interconnectivity
debug. This port operates in accordance with IEEE Standard 1149.1-2001
(JTAG) with
the exception of the ZQ pin. To ensure proper boundary-scan testing of
the ZQ pin, MRS
bit M8 needs to be set to 0 until the JTAG testing of the pin is
complete. Note that upon
power up, the default state of MRS bit M8 is low.
If the RLDRAM boundary scan register is to be used upon power up and
prior to the
initialization of the RLDRAM device, it is imperative that the CK and
CK# pins meet
VID(DC) or CS# be held HIGH from power up until testing. Not doing so
could result in
inadvertent MRS commands to be loaded, and subsequently cause
unexpected results
from address pins that are dependent upon the state of the mode
register. If these
measures cannot be taken, the part must be initialized prior to
boundary scan testing. If
a full initialization is not practical or feasible prior to boundary
scan testing, a single
MRS command with desired settings may be issued instead. After the
single MRS
command is issued, the tMRSC parameter must be satisfied prior to
boundary scan
testing.
The input signals of the test access port (TDI, TMS, and TCK) use VDD
as a supply, while
the output signal of the TAP (TDO) uses VDDQ.
The JTAG test access port utilizes the TAP controller on the RLDRAM,
from which the
instruction register, boundary scan register, bypass register, and ID
register can be
selected. Each of these functions of the TAP controller is described in
detail below.
Disabling the JTAG Feature
It is possible to operate RLDRAM without using the JTAG feature. To
disable the TAP
controller, TCK must be tied LOW (VSS) to prevent clocking of the
device. TDI and TMS
are internally pulled up and may be unconnected. They may alternately
be connected to
VDD through a pull-up resistor. TDO should be left unconnected. Upon
power-up, the
device will come up in a reset state, which will not interfere with the
operation of the
device.
Test Access Port (TAP)
Test Clock (TCK)
The test clock is used only with the TAP controller. All inputs are
captured on the rising
edge of TCK. All outputs are driven from the falling edge of TCK.
Test Mode Select (TMS)
The TMS input is used to give commands to the TAP controller and is
sampled on the
rising edge of TCK.
All of the states in Figure 43: “TAP Controller State
Diagram,” on page 68 are entered
through the serial input of the TMS pin. A “0” in
the diagram represents a LOW on the
TMS pin during the rising edge of TCK while a “1”
represents a HIGH on TMS.
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 67 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
Test Data-In (TDI)
The TDI ball is used to serially input test instructions and data into
the registers and can
be connected to the input of any of the registers. The register between
TDI and TDO is
chosen by the instruction that is loaded into the TAP instruction
register. For information
on loading the instruction register, see Figure 43 on page 68. TDI is
connected to the
most significant bit (MSB) of any register (see Figure 44 on page 68).
Test Data-Out (TDO)
The TDO output ball is used to serially clock test instructions and
data out from the
registers. The TDO output driver is only active during the Shift-IR and
Shift-DR TAP
controller states. In all other states, the TDO pin is in a High-Z
state. The output changes
on the falling edge of TCK. TDO is connected to the least significant
bit (LSB) of any
register (see Figure 44 on page 68).
TAP Controller
The TAP controller is a finite state machine that uses the state of the
TMS pin at the
rising edge of TCK to navigate through its various modes of operation.
The TAP
controller state diagram can be seen in Figure 43 on page 68. Each
state is described in
detail below.
Test-Logic-Reset
The test-logic-reset controller state is entered when TMS is held HIGH
for at least five
consecutive rising edges of TCK. As long as TMS remains HIGH, the TAP
controller will
remain in the test-logic-reset state. The test logic is inactive during
this state.
Run-Test/Idle
The run-test/idle is a controller state in between scan operations.
This state can be
maintained by holding TMS LOW. From here either the data register scan,
or subsequently,
the instruction register scan can be selected.
Select-DR-Scan
Select-DR-scan is a temporary controller state. All test data registers
retain their previous
state while here.
Capture-DR
The capture-DR state is where the data is parallel-loaded into the test
data registers. If
the boundary scan register is the currently selected register, then the
data currently on
the pins is latched into the test data registers.
Shift-DR
Data is shifted serially through the data register while in this state.
As new data is input
through the TDI pin, data is shifted out of the TDO pin.
Exit1-DR, Pause-DR, and Exit2-DR
The purpose of exit1-DR is used to provide a path to return back to the
run-test/idle
state (through the update-DR state). The pause-DR state is entered when
the shifting of
data through the test registers needs to be suspended. When shifting is
to reconvene, the
controller enters the exit2-DR state and then can re-enter the shift-DR
state.
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 68 ©2003 Micron
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288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
Update-DR
When the EXTEST instruction is selected, there are latched parallel
outputs of the
boundary-scan shift register that only change state during the
update-DR controller
state.
Instruction Register States
The instruction register states of the TAP controller are similar to
the data register states.
The desired instruction is serially shifted into the instruction
register during the shift-IR
state and is loaded during the update-IR state.
Figure 43: TAP Controller State Diagram
Figure 44: TAP Controller Block Diagram
Notes: 1. x = 112 for all configurations.
Capture-IR
Shift-IR
Exit1-IR
Pause-IR
Exit2-IR
Update-IR
1
1
1
0
1 1
0 0
1 1
1
0
0
0
0 0
0
0
0 0
1
0
1
1
0
1
0
1
1
1 0 1
Test-logic
reset
Run-test/
Idle
Select
IR-scan
Select
DR-scan
Capture-DR
Shift-DR
Exit1-DR
Pause-DR
Exit2-DR
Update-DR
0
7 6 5 4 3 2 1 0
31 30 29 . . . 2 1 0
. . . . . 2 1 0
TCK
TMS
Selection
circuitry
Selection
circuitry TDI TDO
Boundry scan register
Identification register
Instruction register
TAP controller
Bypass register
x1
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 69 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
Performing a TAP RESET
A reset is performed by forcing TMS HIGH (VDDQ) for five rising edges
of TCK. This
RESET does not affect the operation of the RLDRAM and may be performed
while the
RLDRAM is operating.
At power-up, the TAP is reset internally to ensure that TDO comes up in
a High-Z state.
TAP Registers
Registers are connected between the TDI and TDO balls and allow data to
be scanned
into and out of the RLDRAM test circuitry. Only one register can be
selected at a time
through the instruction register. Data is serially loaded into the TDI
ball on the rising
edge of TCK. Data is output on the TDO ball on the falling edge of TCK.
Instruction Register
Eight-bit instructions can be serially loaded into the instruction
register. This register is
loaded during the update-IR state of the TAP controller. Upon power-up,
the instruction
register is loaded with the IDCODE instruction. It is also loaded with
the IDCODE
instruction if the controller is placed in a reset state as described
in the previous section.
When the TAP controller is in the capture-IR state, the two LSBs are
loaded with a binary
“01” pattern to allow for fault isolation of the
board-level serial test data path.
Bypass Register
To save time when serially shifting data through registers, it is
sometimes advantageous
to skip certain chips. The bypass register is a single-bit register
that can be placed
between the TDI and TDO balls. This allows data to be shifted through
the RLDRAM
with minimal delay. The bypass register is set LOW (VSS) when the
BYPASS instruction is
executed.
Boundary Scan Register
The boundary scan register is connected to all the input and
bidirectional balls on the
RLDRAM. Several balls are also included in the scan register to
reserved balls. The
RLDRAM has a 113-bit register.
The boundary scan register is loaded with the contents of the RAM I/O
ring when the
TAP controller is in the capture-DR state and is then placed between
the TDI and TDO
balls when the controller is moved to the shift-DR state.
Table 29 on page 74 shows the order in which the bits are connected.
Each bit corresponds
to one of the balls on the RLDRAM package. The MSB of the register is
connected
to TDI, and the LSB is connected to TDO.
Identification (ID) Register
The ID register is loaded with a vendor-specific, 32-bit code during
the capture-DR state
when the IDCODE command is loaded in the instruction register. The
IDCODE is hardwired
into the RLDRAM and can be shifted out when the TAP controller is in
the shift-DR
state. The ID register has a vendor code and other information
described in Table 26 on
page 73.
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 70 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
TAP Instruction Set
Overview
Many different instructions (28) are possible with the 8-bit
instruction register. All
combinations used are listed in Table 28 on page 74. These six
instructions are described
in detail below. The remaining instructions are reserved and should not
be used.
The TAP controller used in this RLDRAM is fully compliant to the 1149.1
convention.
Instructions are loaded into the TAP controller during the shift-IR
state when the
instruction register is placed between TDI and TDO. During this state,
instructions are
shifted through the instruction register through the TDI and TDO balls.
To execute the
instruction once it is shifted in, the TAP controller needs to be moved
into the update-IR
state.
EXTEST
The EXTEST instruction allows circuitry external to the component
package to be tested.
Boundary-scan register cells at output balls are used to apply a test
vector, while those at
input balls capture test results. Typically, the first test vector to
be applied using the
EXTEST instruction will be shifted into the boundary scan register
using the PRELOAD
instruction. Thus, during the update-IR state of EXTEST, the output
driver is turned on,
and the PRELOAD data is driven onto the output balls.
IDCODE
The IDCODE instruction causes a vendor-specific, 32-bit code to be
loaded into the
instruction register. It also places the instruction register between
the TDI and TDO balls
and allows the IDCODE to be shifted out of the device when the TAP
controller enters
the shift-DR state. The IDCODE instruction is loaded into the
instruction register upon
power-up or whenever the TAP controller is given a test logic reset
state.
High-Z
The High-Z instruction causes the boundary scan register to be
connected between the
TDI and TDO. This places all RLDRAM outputs into a High-Z state.
CLAMP
When the CLAMP instruction is loaded into the instruction register, the
data driven by
the output balls are determined from the values held in the boundary
scan register.
SAMPLE/PRELOAD
When the SAMPLE/PRELOAD instruction is loaded into the instruction
register and the
TAP controller is in the capture-DR state, a snapshot of data on the
inputs and bidirectional
balls is captured in the boundary scan register.
The user must be aware that the TAP controller clock can only operate
at a frequency up
to 50 MHz, while the RLDRAM clock operates significantly faster.
Because there is a large
difference between the clock frequencies, it is possible that during
the capture-DR state,
an input or output will undergo a transition. The TAP may then try to
capture a signal
while in transition (metastable state). This will not harm the device,
but there is no guarantee
as to the value that will be captured. Repeatable results may not be
possible.
To ensure that the boundary scan register will capture the correct
value of a signal, the
RLDRAM signal must be stabilized long enough to meet the TAP
controller’s capture
setup plus hold time (tCS plus tCH). The RLDRAM clock input might not
be captured
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 71 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
correctly if there is no way in a design to stop (or slow) the clock
during a SAMPLE/
PRELOAD instruction. If this is an issue, it is still possible to
capture all other signals and
simply ignore the value of the CK and CK# captured in the boundary scan
register.
Once the data is captured, it is possible to shift out the data by
putting the TAP into the
shift-DR state. This places the boundary scan register between the TDI
and TDO balls.
BYPASS
When the BYPASS instruction is loaded in the instruction register and
the TAP is placed
in a shift-DR state, the bypass register is placed between TDI and TDO.
The advantage of
the BYPASS instruction is that it shortens the boundary scan path when
multiple devices
are connected together on a board.
Reserved for Future Use
The remaining instructions are not implemented but are reserved for
future use. Do not
use these instructions.
Figure 45: JTAG Operation – Loading Instruction Code and
Shifting Out Data
TMS
TDI
TCK
TDO
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9
TAP
CONTROLLER
STATE
Test-Logic-
Reset
Run-Test
Idle Select-DR- Capture-IR Shift-IR
SCAN
Select-IRSCAN
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
Shift-IR Exit 1-IR Pause-IR Pause-IR
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
8-bit instruction code
TRANSITIONING DATA DON’T CARE
TMS
TDI
TCK
TDO
TAP
CONTROLLER
STATE
T10 T11 T12 T13 T14 T15 T16 T17 T18
Exit 2-IR Select-DRScan
Capture-DR Shift-DR Shift-DR Exit1-DR Update-DR Run-Test
Update-IR Idle
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
n-bit register between TDI and TDO
T19
Run-Test
Idle
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 72 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
Figure 46: TAP Timing
Notes: 1. tCS and tCH refer to the setup and hold time requirements of
latching data from the boundary
scan register.
Table 23: TAP Input AC Logic Levels
+0°C ≤ TC ≤ +95°C; +1.7V ≤ VDD
≤ +1.9V, unless otherwise noted
Description Symbol Min Max Units
Input high (logic 1) voltage VIH VREF + 0.3 – V
Input low (logic 0) voltage VIL – VREF - 0.3 V
Notes: 1. All voltages referenced to VSS (GND).
Table 24: TAP AC Electrical Characteristics
+0°C ≤ TC ≤ +95°C; +1.7V ≤ VDD
≤ +1.9V
Description Symbol Min Max Units
Clock
Clock cycle time tTHTH 20 ns
Clock frequency fTF 50 MHz
Clock HIGH time tTHTL 10 ns
Clock LOW time tTLTH 10 ns
TDI/TDO times
TCK LOW to TDO unknown tTLOX 0 ns
TCK LOW to TDO valid tTLOV 10 ns
TDI valid to TCK HIGH tDVTH 5 ns
TCK HIGH to TDI invalid tTHDX 5 ns
Setup times
TMS setup tMVTH 5 ns
Capture setup tCS 5 ns
Hold times
TMS hold tTHMX 5 ns
Capture hold tCH 5 ns
DON’T CARE
tTHTL tTLTH tTHTH
tMVTH tTHMX
tDVTH tTHDX
tTLOX
tTLOV
UNDEFINED
Test clock
(TCK)
Test mode select
(TMS)
Test data-in
(TDI)
Test data-out
(TDO)
T1 T2 T3 T4 T5 T6
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 73 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
Notes: 1. All voltages referenced to VSS (GND).
2. Overshoot = VIH(AC) ≤ VDD + 0.7V for t ≤ tCK/2;
undershoot = VIL(AC) ≥ –0.5V for t ≤ tCK/2;
during normal operation, VDDQ must not exceed VDD.
Table 25: TAP DC Electrical Characteristics and Operating Conditions
+0°C ≤ TC ≤ +95°C; +1.7V ≤ VDD
≤ +1.9V, unless otherwise noted
Description Condition Symbol Min Max Units Notes
Input high (logic 1) voltage VIH VREF + 0.15 VDD + 0.3 V 1, 2
Input low (logic 0) voltage VIL VSSQ - 0.3 VREF - 0.15 V 1, 2
Input leakage current 0V ≤ VIN ≤ VDD ILI –5.0
5.0 μA
Output leakage current Output disabled,
0V ≤ VIN ≤ VDDQ
ILO –5.0 5.0 μA
Output low voltage IOLC = 100μA VOL1 0.2 V 1
Output low voltage IOLT = 2mA VOL2 0.4 V 1
Output high voltage |IOHC| = 100μA VOH1 VDDQ - 0.2 V 1
Output high voltage |IOHT| = 2mA VOH2 VDDQ - 0.4 V 1
Table 26: Identification Register Definitions
Instruction Field All Devices Description
Revision number (31:28) abcd ab = die revision
cd = 00 for x9, 01 for x18, 10 for x36
Device ID (27:12) 00jkidef10100111 def = 000 for 288Mb, 001 for 576Mb
i = 0 for common I/O, 1 for separate I/O
jk = 01 for RLDRAM II, 00 for RLDRAM
Micron JEDEC ID code (11:1) 00000101100 Allows unique identification of
RLDRAM vendor
ID register presence indicator (0) 1 Indicates the presence of an ID
register
Table 27: Scan Register Sizes
Register Name Bit Size
Instruction 8
Bypass 1
ID 32
Boundary scan 113
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reserves the right to change products or specifications without notice.
288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 74 ©2003 Micron
Technology, Inc. All rights reserved.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
Table 28: Instruction Codes
Instruction Code Description
Extest 0000 0000 Captures I/O ring contents; Places the boundary scan
register between TDI and TDO;
This operation does not affect RLDRAM operations
ID code 0010 0001 Loads the ID register with the vendor ID code and
places the register between TDI and
TDO; This operation does not affect RLDRAM operations
Sample/preload 0000 0101 Captures I/O ring contents; Places the
boundary scan register between TDI and TDO
Clamp 0000 0111 Selects the bypass register to be connected between TDI
and TDO; Data driven by
output balls are determined from values held in the boundary scan
register
High-Z 0000 0011 Selects the bypass register to be connected between
TDI and TDO; All outputs are
forced into High-Z
Bypass 1111 1111 Places the bypass register between TDI and TDO; This
operation does not affect
RLDRAM operations
Table 29: Boundary Scan (Exit) Order
Bit# Ball Bit# Ball Bit# Ball
1 K1 39 R11 77 C11
2 K2 40 R11 78 C11
3 L2 41 P11 79 C10
4 L1 42 P11 80 C10
5 M1 43 P10 81 B11
6 M3 44 P10 82 B11
7 M2 45 N11 83 B10
8 N1 46 N11 84 B10
9 P1 47 N10 85 B3
10 N3 48 N10 86 B3
11 N3 49 P12 87 B2
12 N2 50 N12 88 B2
13 N2 51 M11 89 C3
14 P3 52 M10 90 C3
15 P3 53 M12 91 C2
16 P2 54 L12 92 C2
17 P2 55 L11 93 D3
18 R2 56 K11 94 D3
19 R3 57 K12 95 D2
20 T2 58 J12 96 D2
21 T2 59 J11 97 E2
22 T3 60 H11 98 E2
23 T3 61 H12 99 E3
24 U2 62 G12 100 E3
25 U2 63 G10 101 F2
26 U3 64 G11 102 F2
27 U3 65 E12 103 F3
28 V2 66 F12 104 F3
29 U10 67 F10 105 E1
30 U10 68 F10 106 F1
31 U11 69 F11 107 G2
32 U11 70 F11 108 G3
®
8000 S. Federal Way, P.O. Box 6, Boise, ID 83707-0006, Tel:
208-368-3900
prodmktg@micron.com www.micron.com Customer Comment Line: 800-932-4992
Micron, the M logo, and the Micron logo are trademarks of Micron
Technology, Inc. RLDRAM is a trademark of Qimonda AG in various
countries, and is used by Micron Technology, Inc. under license from
Qimonda. All other trademarks are the property of their respective
owners. This data sheet contains minimum and maximum limits specified
over the power supply and temperature range set forth herein.
Although considered final, these specifications are subject to change,
as further product development and data characterization sometimes
occur.
288Mb: x9, x18, x36 2.5V VEXT, 1.8V VDD, HSTL, CIO, RLDRAM II
IEEE 1149.1 Serial Boundary Scan (JTAG)
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288Mb_RLDRAM_II_CIO.Core.fm - Rev B 5/08 EN 75 ©2003 Micron
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33 T10 71 E10 109 G1
34 T10 72 E10 110 H1
35 T11 73 E11 111 H2
36 T11 74 E11 112 J2
37 R10 75 D11 113 J1
38 R10 76 D10 – –