A3V56S30ETP View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
A3V56S30ETP Datasheet PDF : 40 Pages
| |||
A3V56S30ETP
A3V56S40ETP
256M 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
(V=Valid, X=Don′t Care, H=Logic High, L=Logic Low)
X
H
X
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
BA1
X
X
X
V
V
V
V
V
V
X
L
BA0
X
X
X
V
V
V
V
V
V
X
L
A10/
AP
X
X
X
L
H
L
H
V
L
H
L
A12-11,
A9 ~ A0
X
X
X
V
V
V
V
V
X
X
X
CKE Truth Table
Current state
Function
Activating
Enter Clock suspend
Clock suspend
Maintain Clock suspend
Clock suspend
Exit Clock suspend
All banks idle
Auto refresh command
All banks idle
Enter Self refresh
All banks idle
Enter Power down
Self refresh
Exit Self refresh
Power down
Exit Power down
Power down
Maintain power down
(V=Valid, X=Don′t Care, H=Logic High, L=Logic Low)
Symbol
REF
SREF
PD
CKEn-1 CKEn /CS
H
L
X
L
L
X
L
H
X
H
H
L
H
L
L
H
L
L
H
L
H
L
H
L
L
H
H
L
H
L
L
H
H
L
L
X
/RAS
X
X
X
L
L
H
X
H
X
H
X
X
/CAS
X
X
X
L
L
H
X
H
X
H
X
X
/WE /Address
X
X
X
X
X
X
H
X
H
X
H
X
X
X
H
X
X
X
H
X
X
X
X
X
Revision 2.2
Page 10/39
Mar., 2009
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