HM5225165B/HM5225805B/HM5225405B-75/A6/B6
Write with auto-precharge: In this operation, since precharge is automatically performed after completing
a burst write or single write operation, a precharge command need not be executed after each write operation.
The command executed for the same bank after the execution of this command must be the bank active
(ACTV) command. In addition, an interval of lAPW is required between the final valid data input and input of
next command.
Burst Write (Burst Length = 4)
CLK
WRIT A
ACTV
ACTV
Command
DQ (input)
IRAS
in0 in1 in2 in3
lAPW
Note: Internal auto-precharge starts at the timing indicated by " ".
and an interval of tRAS (lRAS) is required between previous active (ACTV) command
and internal precharge " ".
Single Write
CLK
WRIT A
ACTV
ACTV
Command
IRAS
DQ (input)
in
lAPW
Note: Internal auto-precharge starts at the timing indicated by " ".
and an interval of tRAS (lRAS) is required between previous active (ACTV) command
and internal precharge " ".
Data Sheet E0082H10
26