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W9412G6IH
8. OPERATION MODE
The following table shows the operation commands.
8.1
Simplified Truth Table
SYM.
COMMAND
DEVICE
STATE
CKEn-1 CKEn
DM
(4)
BA0,
BA1
A10
A0-A9
,A11
CS
RAS
CAS
WE
ACT
Bank Active
Idle
(3)
H
X
X
V
V
V
L
L
H
H
Any
Active
Active
Active
Active
Active
PRE
PREA
WRIT
WRITA
READ
READA
MRS
EMRS
NOP
BST
DSL
AREF
SELF
SELEX
PD
PDEX
WDE
WDD
Bank Precharge
Precharge All
Write
Write with Auto-
precharge
Read
Read with Auto-
precharge
Mode Register Set
Extended Mode
Register Set
No Operation
Burst Read Stop
Device Deselect
Auto Refresh
Self Refresh
Entry
Self Refresh Exit
Power Down
Mode Entry
Power Down
Mode Exit
Data Write Enable
Data Write Disable
(3)
Any
(3)
(3)
(3)
(3)
Idle
Idle
Any
Active
Any
Idle
Idle
Idle (Self
Refresh)
Idle/
(5)
Any
(Power
Down)
Active
Active
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
L
H
H
X
X
X
X
X
X
X
X
X
X
X
H
L
H
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
V
X
V
V
V
V
L, L
H, L
X
X
X
X
X
X
X
X
X
X
L
H
L
H
L
H
C
V
X
X
X
X
X
X
X
X
X
X
X
X
V
V
V
V
C
V
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
L
L
L
L
L
H
L
L
H
L
H
L
H
L
X
X
L
L
H
H
H
H
L
L
H
H
X
L
L
X
H
X
H
X
H
X
X
H
H
L
L
L
L
L
L
H
H
X
L
L
X
H
X
H
X
H
X
X
L
L
L
L
H
H
L
L
H
L
X
H
H
X
X
X
X
X
X
X
X
Notes :
1. V = Valid
X = Don’t Care
L = Low level
H = High level
2. CKEn signal is input level when commands are issued.
CKEn-1 signal is input level one clock cycle before the commands are issued.
3. These are state designated by the BA0, BA1 signals.
4. LDM, UDM (W9412G6IH).
5. Power Down Mode can not entry in the burst cycle.
Publication Release Date: Sep. 16, 2009
- 17 -
Revision A06
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