IS42S83200B,
IS42S16160B
INITIALIZE AND LOAD MODE REGISTER
(1)
T0
CLK
t
CK
t
CKS
t
CKH
CKE
t
CMH
t
CMS
COMMAND
DQM/
DQML, DQMH
NOP
T1
Tn+1
t
CH
To+1
t
CL
Tp+1
Tp+2
Tp+3
t
CMH
t
CMS
PRECHARGE
t
CMH
t
CMS
AUTO
REFRESH
NOP
AUTO
REFRESH
NOP
Load MODE
REGISTER
NOP
ACTIVE
t
AS
t
AH
A0-A9, A11, A12
ALL BANKS
A10
SINGLE BANK
BA0, BA1
DQ
t
RP
T
Power-up: V
CC
and CLK stable
T = 200碌s Min.
Precharge
all banks
AUTO REFRESH
AUTO REFRESH
Program MODE REGISTER
(2, 3, 4)
DON'T CARE
t
RC
t
RC
t
MRD
ALL BANKS
CODE
t
AS
t
AH
CODE
t
AS
t
AH
CODE
BANK
ROW
ROW
At least 8 Auto-Refresh Commands
Notes:
1. If
CS
is High at clock High time, all commands applied are NOP.
2. The Mode register may be loaded prior to the Auto-Refresh cycles if desired.
3. JEDEC and PC100 specify three clocks.
4. Outputs are guaranteed High-Z after the command is issued.
Integrated Silicon Solution, Inc. 鈥?www.issi.com
Rev. C
03/13/07
21