IS42S83200B, IS42S16160B
SELF-REFRESH CYCLE
T0
T1
T2
Tn+1
To+1
To+2
t
CK
t
CH
t
CL
CLK
CKE
tCKS
t
CKH
t
CKS
≥ tRAS
tCKS
t
CMS
tCMH
Auto
Auto
COMMAND
PRECHARGE
NOP
NOP
NOP
Refresh
Refresh
DQM/
DQML, DQMH
A0-A9, A11, A12
A10
ALL BANKS
SINGLE BANK
tAS
tAH
BA0, BA1
DQ
BANK
High-Z
tRP
t
XSR
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
Integrated Silicon Solution, Inc. — www.issi.com
23
Rev. D
07/28/08