參數(shù)資料
型號: MT47H128M8HQ-3AT
元件分類: DRAM
英文描述: 128M X 8 DDR DRAM, 0.4 ns, PBGA60
封裝: 8 X 11.50 MM, ROHS COMPLIANT, FBGA-60
文件頁數(shù): 8/129頁
文件大?。?/td> 9252K
代理商: MT47H128M8HQ-3AT
Figure 62: WRITE-to-PRECHARGE
tDQSS (NOM)
CK
CK#
Command
WRITE
NOP
Address
Bank a,
Col b
Bank,
(a or all)
NOP
T0
T1
T2
T3
T2n
T4
T5
T3n
T6
T7
tWR
tRP
DQ
DQS#
DQS
DM
DI
b
tDQSS (MIN)
DQ
DQS#
DQS
DM
DI
b
tDQSS (MAX)
DQ
DQS#
DQS
DM
DI
b
Don’t Care
Transitioning Data
WL + tDQSS
WL - tDQSS
WL + tDQSS
PRE
1
Notes: 1. Subsequent rising DQS signals must align to the clock within tDQSS.
2. DI b = data-in for column b.
3. Three subsequent elements of data-in are applied in the programmed order following
DI b.
4. BL = 4, CL = 3, AL = 0; thus, WL = 2.
5. tWR is referenced from the first positive CK edge after the last data-in pair.
6. The PRECHARGE and WRITE commands are to the same bank. However, the PRECHARGE
and WRITE commands may be to different banks, in which case tWR is not required and
the PRECHARGE command could be applied earlier.
7. A10 is LOW with the WRITE command (auto precharge is disabled).
1Gb: x4, x8, x16 1.55V DDR2 SDRAM
WRITE
PDF: 09005aef82b91d01
1GbDDR2_1_55V.PDF Rev. A 5/09 EN
105
Micron Technology, Inc. reserves the right to change products or specifications without notice.
2009 Micron Technology, Inc. All rights reserved.
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