®
IS42S32200
ISSI
SELF-REFRESHCYCLE
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
tCMH
Auto
Auto
COMMAND
DQM0-DQM3
PRECHARGE
NOP
NOP
NOP
Refresh
Refresh
A0-A9
A10
ALL BANKS
SINGLE BANK
t
AS
t
AH
BA0, BA1
DQ
BANK
High-Z
tXSR
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
40
Integrated Silicon Solution, Inc. — 1-800-379-4774
ADVANCE INFORMATION Rev. 00B
08/14/03