®
IS42S81600A, IS42S16800A, IS42S32400A
IS42LS81600A, IS42LS16800A, IS42LS32400A
ISSI
SELF-REFRESH CYCLE
T0
T1
T2
Tn+1
To+1
To+2
t
CK
t
CH
t
CL
CLK
CKE
t
CKS
t
CKH
t
CKS
≥ tRAS
t
CKS
t
CMS
t
CMH
Auto
Auto
COMMAND
PRECHARGE
NOP
NOP
NOP
Refresh
Refresh
DQM/
DQML, DQMH
A0-A9, A11
A10
ALL BANKS
SINGLE BANK
t
AS
t
AH
BA0, BA1
DQ
BANK
High-Z
t
XSR
t
RP
Precharge all
active banks
Enter self
refresh mode
CLK stable prior to exiting
self refresh mode
Exit self refresh mode
(Restart refresh time base)
DON'T CARE
CAS latency = 2, 3
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
ADVANCEDINFORMATION Rev. 00A
27
06/01/02