IS42S81600D, IS42S16800D
READ - DQM OPERATION
T0
T1
T2
T3
T4
T5
T6
T7
T8
t
CK
t
CL
tCH
CLK
CKE
t
CKS tCKH
t
CMS tCMH
COMMAND
ACTIVE
NOP
READ
NOP
NOP
NOP
NOP
NOP
NOP
t
CMS
tCMH
DQM/
DQML, DQMH
t
t
t
AS
tAH
COLUMN m(2)
A0-A9, A11
A10
ROW
AS
t
AH
ENABLE AUTO PRECHARGE
ROW
DISABLE AUTO PRECHARGE
AS
t
AH
BA0, BA1
BANK
BANK
t
OH
t
OH
tOH
tAC
tAC
D
OUT
m
D
OUT m+
2
D
OUT m+
3
DQ
tLZ
tLZ
t
HZ
tAC
t
HZ
DON'T CARE
UNDEFINED
t
RCD
CAS Latency
Notes:
1) CAS latency = 2, Burst Length = 4
2) X16: A9 and A11 = "Don't Care"
X8: A11 = "Don't Care"
36
Integrated Silicon Solution, Inc. — www.issi.com
Rev. E
07/28/08