W9412G6CH
Publication Release Date:Jul. 04, 2007
- 44 - Revision A06
11.9 Auto-precharge Timing (Read cycle, CL = 2), continued
2. TRCD/RAP(MIN) ≤ TRCD (READA) < TRAS (MIN) – (BL/2) × TCK
AP
Q7Q6Q5Q4Q3Q2Q1Q0
ACT READA ACT
Q0 Q1 Q2 Q3
ACTREADAACT
Q0 Q1
ACT
AP
READAACT
t
RP
t
RAS
CMD
DQS
DQ
CMD
DQS
DQ
CMD
DQS
DQ
BL=2
BL=4
BL=8
CLK
CLK
AP
t
RAP
t
RCD
t
RAP
t
RCD
t
RAP
t
RCD
Notes: CL2 shown; same command operation timing with CL = 2.5, CL=3.
In this case, the internal precharge operation does not begin until after t
RAS(min) has command.
AP
Represents the start of internal precharging.
The Read with Auto-precharge command cannot be interrupted by any other command.