is42s16128 Integrated Silicon Solution, Inc., is42s16128 Datasheet - Page 12

• Manufacturer Part Number: is42s16128
• Description: 128k Words Bits Banks Sdram
• Manufacturer: Integrated Silicon Solution, Inc.

COMMAND TRUTH TABLE
DQM TRUTH TABLE
CKE TRUTH TABLE
12
IS42S16128
Symbol
Symbol
ENB
MASK
ENBU
ENBL
MASKU
MASKL
Symbol
SPND
—
—
REF
SELF
SELFX
PDWN
—
MRS
REF
SREF
PRE
PALL
ACT
WRIT
WRITA
READ
READA
BST
NOP
DESL
SBY
ENB
MASK
Command
Command
Start Clock Suspend Mode
Clock Suspend
Terminate Clock Suspend Mode
Auto-Refresh
Start Self-Refresh Mode
Terminate Self-Refresh Mode
Start Power-Down Mode
Terminate Power-Down Mode
Command
Data Write / Output Enable
Data Mask / Output Disable
Upper Byte Data Write / Output Enable
Lower Byte Data Write / Output Enable
Upper Byte Data Mask / Output Disable
Lower Byte Data Mask / Output Disable
Mode Register Set
Auto-Refresh
Self-Refresh
Precharge Selected Bank
Precharge Both Banks
Bank Activate
Write
Write With Auto-Precharge
Read
Read With Auto-Precharge
Burst Stop
No Operation
Device Deselect
Clock Suspend / Standby Mode
Data Write / Output Enable
Data Mask / Output Disable
(8)
(9)
(1,2)
(1,2)
(5,6)
(5)
(7)
(3,4)
(1,2)
(8)
(8)
Current State
Other States
Idle
Idle
Idle
Active
Clock Suspend
Self-Refresh
Power-Down
n-1
n-1
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
CKE
CKE
X
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
n
L
n
CS
Integrated Silicon Solution, Inc. — 1-800-379-4774
H
X
X
X
L
L
L
L
L
L
L
L
L
L
L
L
n-1
H
H
H
H
H
L
L
L
L
L
UPPER
CKE
RAS CAS WE DQM
L
H
H
H
H
H
H
X
X
X
X
H
X
H
X
L
L
L
L
L
L
L
H
H
H
H
H
DQM
n
L
L
L
L
L
H
H
H
H
H
L
L
L
L
L
L
L
X
X
X
X
LOWER
CS
X
X
X
H
H
X
L
L
L
L
H
H
X
L
X
L
H
H
H
H
H
H
L
L
L
L
L
L
X
X
X
X
RAS CAS WE
X
X
X
H
X
H
X
X
L
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
L
H
H
X
X
X
L
L
X
X
X
A0
BS
BS
BS
BS
BS
BS
X
X
X
X
X
X
X
X
X
H
H
H
H
X
X
X
X
X
X
OP CODE
A8
Row
H
H
H
X
X
L
L
L
X
X
X
X
X
X
A9
X
X
X
X
X
X
X
X
X
X
ISSI
Column
Column
Column
Column
A7-A0
Row
A8 A7-A0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
HIGH-Z
HIGH-Z
HIGH-Z
Active
03/13/00
I/On
Rev. A
X
X
X
X
X
X
X
X
X
X
X
X
®