W9412G6CH
Publication Release Date: Jul. 04, 2007
- 43 - Revision A06
11.8 Auto-precharge Timing (Read Cycle, CL = 2)
1. TRCD (READA) ≥ TRAS (MIN) – (BL/2) × TCK
AP
Q7Q6Q5Q4Q3Q2Q1Q0
ACT
READA
ACT
Q0 Q1 Q2 Q3
ACTREADAACT
Q0 Q1
ACT
AP
READAACT
tRP
t
RAS
CMD
DQS
DQ
CMD
DQS
DQ
CMD
DQS
DQ
BL=2
BL=4
BL=8
CLK
CLK
AP
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.