is42s16800a-7tli Integrated Silicon Solution, Inc., is42s16800a-7tli Datasheet - Page 8

• Manufacturer Part Number: is42s16800a-7tli
• Description: 16meg X 8, 8meg X16 & 4meg X 32 128-mbit Synchronous Dram - Integrated Silicon Solution, Inc
• Manufacturer: Integrated Silicon Solution, Inc.

DQM TRUTH TABLE
IS42S81600A, IS42S16800A, IS42S32400A
COMMAND TRUTH TABLE
8
Note: H=V
Note: H=V
Function Symbol
Device deselect
No operation
Burst stop
Read
Read with auto precharge H
Write
Write with auto precharge H
Bank activate
Precharge select bank
Precharge all banks
Mode register set
Function Symbol
Data write / output enable
Data mask / output disable
Upper byte write enable / output enable
Lower byte write enable / output enable
Upper byte write inhibit / output disable
Lower byte write inhibit / output disable
IH
IH
, L=V
, L=V
IL
IL
x= V
x= V
IH
IH
or V
or V
IL
IL
, V = Valid Data.
, V = Valid Data.
CKE
n – 1
H
H
H
H
H
H
H
H
H
n
×
×
H
×
×
×
×
×
×
×
×
Integrated Silicon Solution, Inc. — www.issi.com —
CS
CS
CS
CS
CS
H
L
L
L
L
L
L
L
L
L
L
CKE
n-1
H
H
H
H
H
H
RAS
RAS
RAS
RAS
RAS
×
H
H
H
H
H
H
L
L
L
L
n
×
×
×
×
×
×
×
H
H
L
L
L
H
H
H
L
L
CAS
CAS
CAS
CAS
CAS
DQM
U
L
H
L
×
H
×
×
H
L
H
H
L
L
H
L
L
L
WE
WE
WE
WE
WE
BA1
×
×
×
V
V
V
V
V
V
×
L
PRELIMINARY INFORMATION Rev. 00C
L
×
L
×
H
L
H
BA0
×
×
×
V
V
V
V
V
×
L
V
A10
×
×
×
L
H
L
H
V
L
H
L
ISSI
1-800-379-4774
A11
A9 - A0
×
×
V
V
V
V
V
×
×
V
01/20/05
®