IS45S81600E Datasheet, PDF (8/61 Pages) Integrated Silicon Solution, Inc – 16M x 8, 8M x16 128Mb SYNCHRONOUS DRAM

IS45S81600E, IS45S16800E
COMMAND TRUTH TABLE

Function
CKE
n – 1 n CS RAS CAS WE BA1 BA0 A10
Device deselect (DESL)
H×H
×
×
×
×
×
×
No operation (NOP)
H× L
H
H
H
×
×
×
Burst stop (BST)
H× L
H
H
L
×
×
×
Read
H× L
H
L
H
V
V
L
Read with auto precharge H × L
H
L
H
V
V
H
Write
H× L
H
L
L
V
V
L
Write with auto precharge H × L
H
L
L
V
V
H
Bank activate (ACT)
H× L
L
H
H
V
V
V
Precharge select bank (PRE) H × L
L
H
L
V
V
L
Precharge all banks (PALL) H × L
L
H
L
×
×
H
CBR Auto-Refresh (REF) H H L
L
L
H
×
×
×
Self-Refresh (SELF)
HL L
L
L
H
×
×
×
Mode register set (MRS) H × L
L
L
L
L
L
L
Note:H=Vih, L=Vil x= Vih or Vil, V = Valid Data.
A11
A9 - A0
×
×
×
V
V
V
V
V
×
×
×
×
V
DQM TRUTH TABLE

Function
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
Note:H=Vih, L=Vil x= Vih or Vil, V = Valid Data.
CKE
n-1 n
H
×
H
×
H
×
H
×
H
×
H
×
DQM
U L
L
L
H
H
L
×
×
L
H
×
×
H

8
Integrated Silicon Solution, Inc. — www.issi.com
Rev.  A
02/19/09