A2V64S40 データシートの表示（PDF） - Unspecified
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A2V64S40 Datasheet PDF : 79 Pages
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Powerchip Semiconductor Corporation
A2V64S40CTP
64M Single Data Rate Synchronous DRAM
TRUTH TABLE
Command Truth Table
COMMAND
Symbol CKEn-1 CKEn /CS
Device deselect
DSL
H
No operation
NOP
H
Burst stop
BST
H
Read
RD
H
Read with auto precharge
RDA
H
Write
WR
H
Write with auto precharge
WRA
H
Bank activate
ACT
H
Precharge select bank
PRE
H
Precharge all banks
PALL
H
Mode register set
MRS
H
Extended mode register set
EMRS
H
(V=Valid, X=Don′t Care, H=Logic High, L=Logic Low)
X
H
X
L
H
L
X
L
X
L
X
L
X
L
X
L
X
L
X
L
X
L
X
L
/RAS /CAS /WE
X
X
X
H
H
H
H
H
L
H
L
H
H
L
H
H
L
L
H
L
L
L
H
H
L
H
L
L
H
L
L
L
L
L
L
L
BA1
X
X
X
V
V
V
V
V
V
X
L
H
BA0
X
X
X
V
V
V
V
V
V
X
L
L
A10/A
P
X
X
X
L
H
L
H
V
L
H
L
L
A11,
A9 ~ A0
X
X
X
V
V
V
V
V
X
X
X
V
CKE Truth Table
Current state
Function
Activating
Clock suspend mode entry
Any
Clock suspend mode
Clock suspend
Clock suspend mode exit
Idle
Auto refresh command
Idle
Self refresh entry
Idle
Power down entry
Idle
Self refresh
Deep power down entry
Self refresh exit
Power down
Power down exit
Deep power down Deep power down exit
(V=Valid, X=Don′t Care, H=Logic High, L=Logic Low)
Symbol
REF
SREF
PD
DPD
CKEn-1
H
L
L
H
H
H
H
H
www.DataSheet.co.kr
L
L
L
L
L
CKEn
L
L
H
H
L
L
L
L
H
H
H
H
H
/CS
X
X
X
L
L
L
H
L
L
H
L
H
X
/RAS
X
X
X
L
L
H
X
H
H
X
H
X
X
/CAS
X
X
X
L
L
H
X
H
H
X
H
X
X
/WE /Address
X
X
X
X
X
X
H
X
H
X
H
X
X
X
L
X
H
X
X
X
H
X
X
X
X
X
Revision 1.0
Page 8/38
March, 2005
Datasheet pdf - http://www.DataSheet4U.net/
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