is42s16400b1 Integrated Silicon Solution, Inc., is42s16400b1 Datasheet - Page 36

• Manufacturer Part Number: is42s16400b1
• Description: 1 Meg Bits X 16 Bits X 4 Banks 64-mbit Synchronous Dynamic Ram - Integrated Silicon Solution, Inc
• Manufacturer: Integrated Silicon Solution, Inc.

IS42S16400B1
POWER-DOWN MODE CYCLE
36
CAS latency = 2, 3
DQML, DQMH
active banks
Precharge all
COMMAND
A0-A9, A11
BA0, BA1
DQM/
CKE
CLK
A10
DQ
High-Z
SINGLE BANK
t
t
ALL BANKS
CKS
CMS
PRECHARGE
t
AS
BANK
T0
All banks idle, enter
power-down mode
t
t
CKH
t
CMH
AH
Two clock cycles
t
CK
NOP
T1
Integrated Silicon Solution, Inc. — www.issi.com —
t
t
CL
CKS
NOP
T2
t
Input buffers gated
CH
power-down mode
off while in
Exit power-down mode
t
CKS
Tn+1
NOP
All banks idle
ACTIVE
BANK
ROW
ROW
Tn+2
DON'T CARE
ISSI
1-800-379-4774
12/09/03
Rev. A
®