IS42S83200C
IS42S16160C, IC42S16160C
TRUTH TABLE
Command Truth Table
A10/
AP
A12-11,
A9 ~ A0
COMMAND
Symbol
CKEn-1
CKEn
/CS
/RAS /CAS /WE
BA1
BA0
Device deselect
No operation
Burst stop
DSL
NOP
BST
RD
RDA
WR
WRA
ACT
PRE
PALL
MRS
EMRS
H
H
H
H
H
H
H
H
H
H
H
H
X
X
H
X
X
X
X
X
X
X
X
X
H
L
L
L
L
L
L
L
L
L
L
L
X
H
H
H
H
H
H
L
L
L
L
L
X
H
H
L
L
L
X
H
L
H
H
L
L
H
L
X
X
X
V
V
V
V
V
V
X
L
X
X
X
V
V
V
V
V
V
X
L
X
X
X
L
H
L
H
V
L
H
L
X
X
X
V
V
V
V
V
X
X
X
V
Read
Read with auto precharge
Write
Write with auto precharge
Bank activate
Precharge select bank
Precharge all banks
Mode register set
Extended mode register set
L
H
H
H
L
L
L
L
L
H
L
L
(V=Valid, X=Donϝt Care, H=Logic High, L=Logic Low)
CKE Truth Table
Current state
Activating
Any
Clock suspend
Idle
Function
Symbol
CKEn-1
H
L
L
H
H
H
H
H
L
CKEn
L
L
H
H
L
L
L
/CS
/RAS
/CAS
/WE
X
X
X
H
/Address
Clock suspend mode entry
Clock suspend mode
Clock suspend mode exit
Auto refresh command
Self refresh entry
X
X
X
L
L
L
H
L
L
H
X
X
X
L
X
X
X
L
X
X
X
X
X
X
X
X
X
X
REF
SREF
PD
Idle
L
L
H
Idle
Power down entry
H
X
H
H
X
H
X
H
H
X
H
X
L
H
X
Idle
Self refresh
Deep power down entry
Self refresh exit
DPD
L
H
H
L
Power down
Power down exit
L
L
H
H
L
H
H
X
H
X
H
X
X
X
Deep power down
Deep power down exit
L
H
X
X
X
X
X
(V=Valid, X=Donϝt Care, H=Logic High, L=Logic Low)
10
Integrated Silicon Solution, Inc. — www.issi.com
Rev. 00D
05/29/08
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
