W9412G6JH
12.8 Auto-precharge Timing (Read Cycle, CL = 2)
1) t RCD (READA) ≥ t RAS (min) – (BL/2) ? t CK
CLK
CLK
BL=2
t RAS
t RP
CMD
ACT
READA
AP
ACT
DQS
DQ
BL=4
Q0
Q1
CMD
ACT
READA
AP
ACT
DQS
DQ
Q0
Q1
Q2
Q3
BL=8
CMD
ACT
READA
AP
ACT
DQS
DQ
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Notes: CL=2 shown; same command operation timing with CL = 2,5 and CL=3
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.
Publication Release Date: Jan. 14, 2014
- 41 -
Revision: A04
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