is42s16160a1-7t Integrated Silicon Solution, Inc., is42s16160a1-7t Datasheet - Page 6

• Manufacturer Part Number: is42s16160a1-7t
• Description: 256 Mb Synchronous Dram
• Manufacturer: Integrated Silicon Solution, Inc.

IS42S83200A1
IS42S16160A1
6
COMMAND TRUTH TABLE
H=High Level, L=Low Level, V=Valid, X=Don't Care, n=CLK cycle number
NOTE:
1. A7-9,11-12=L, A0-A6 =Mode Address
Single Bank Precharge
Column Address Entry
Column Address Entry
Column Address Entry
Column Address Entry
Row Address Entry &
Precharge All Banks
Self-Refresh Entry
Mode Register Set
Self-Refresh Exit
Auto-Precharge
Auto-Precharge
Burst Terminate
Bank Activate
No Operation
Auto-Refresh
& Write with
& Read with
COMMAND
Deselect
& Read
& Write
(4-bank x 8,388,608 - word x 8-bit)
(4-bank x 4,194,304 - word x 16-bit)
MNEMONIC
WRITEA
READA
REFSX
DESEL
WRITE
PREA
READ
REFA
REFS
TBST
NOP
ACT
PRE
MRS
CKE
n-1
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
CKE
X
X
X
X
X
X
X
X
X
H
L
H
H
X
X
n
/CS
H
L
L
L
L
L
L
L
L
L
L
H
L
L
L
/RAS
Integrated Silicon Solution, Inc. — 1-800-379-4774
X
H
L
L
L
H
H
H
H
L
L
X
H
H
L
/CAS
X
H
H
H
H
L
L
L
L
L
L
X
H
H
L
/WE BA0,1
X
H
H
L
L
L
L
H
H
H
H
X
H
L
L
X
X
V
V
X
V
V
V
V
X
X
X
X
X
L
A10
/AP
X
X
V
L
H
L
H
L
H
X
X
X
X
X
L
A0-9,
11-12
ISSI
X
X
V
X
X
V
V
V
V
X
X
X
X
X
V
note
1
10/28/05
Rev. B
®