參數(shù)資料
型號(hào): W942508BH
英文描述: DRAM
中文描述: 內(nèi)存
文件頁(yè)數(shù): 33/45頁(yè)
文件大?。?/td> 1601K
代理商: W942508BH
W942508BH
Publication Release Date: March 19, 2002
- 33 -
Revision A1
Timing Waveforms, continued
Auto Precharge Timing (Read cycle, CL = 2)
1) tRCD (READA)
tRAS (min) – (BL/2)
×
tCK
AP
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
ACT
READA
ACT
Q0
Q1
Q2
Q3
ACT
READA
ACT
Q0
Q1
ACT
AP
READA
ACT
tRP
t
RAS
CMD
DQS
DQ
CMD
DQS
DQ
CMD
DQS
DQ
BL=2
BL=4
BL=8
CLK
CLK
AP
Notes: CL2 shown; same command operation timing with CL = 2.5
In this case , the internal precharge operation begin after BL/2 cycle from READA command.
AP
represents the start of internal precharging .
The Read with Auto precharge command cannot be interrupted by any other command.
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