VG36641641DT-6 Powerchip, VG36641641DT-6 Datasheet - Page 9

• Manufacturer Part Number: VG36641641DT-6
• Description: CMOS Synchronous Dynamic RAM
• Manufacturer: Powerchip

2.Truth Table
2.1 Command Truth Table
2.2 DQM Truth Table
2.3 CKE Truth Table
H : High level, L : Low level
VIS
X : High or Low level (Don’t care), V : Valid Data input
Document :1G5-0177
Device deselect
No operation
Mode register set
Bank activate
Read
Read with auto precharge
Write
Write with auto precharge
Precharge select bank
Precharge all banks
Burst stop
CBR (Auto) refresh
Self refresh
Data write/output enable
Data mask/output disable
Activating
Any
Clock suspend
Idle
Idle
Self refresh
Idle
Power down
Current State
FUNCTION
FUNCTION
Clock suspend mode entry
Clock suspend
Clock suspend mode exit
CBR refresh command
Self refresh entry
Self refresh exit
Power down entry
Power down exit
Function
READA
Symbol
WRITA
READ
DESL
WRIT
SELF
PALL
NOP
MRS
PRE
ACT
BST
REF
n - 1
H
H
H
H
H
H
H
H
H
H
H
H
H
CKE
Symbol
SELF
REF
Symbol
H
X
X
X
X
X
X
X
X
X
X
X
n
L
MASK
ENB
VG36644041DT / VG36648041DT / VG36641641DT
Rev.5
CS
H
L
L
L
L
L
L
L
L
L
L
L
L
n - 1
H
H
H
H
L
L
L
L
L
CKE
RAS
H
H
H
H
H
H
X
L
L
L
L
L
L
n - 1
H
H
H
H
H
H
H
n
L
L
L
L
CMOS Synchronous Dynamic RAM
CAS
CKE
H
H
H
H
H
X
L
L
L
L
L
L
L
CS
X
X
X
H
X
X
L
L
L
n - 1
WE
X
X
X
H
H
H
H
H
H
L
L
L
L
L
L
RAS
X
X
X
H
X
X
X
L
L
BA
X
X
V
V
V
V
V
V
X
X
X
X
L
CAS
H
X
X
X
X
X
X
L
L
A10
X
X
V
H
H
H
X
X
X
L
L
L
L
DQM
WE
Page 9
H
H
H
X
X
X
X
X
X
H
L
A9 - A0
A11
Add -
ress
X
X
V
V
V
V
V
V
X
X
X
X
X
X
X
X
X
X
X
X
X
X