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W9864G6JH
8. OPERATION MODE
Fully synchronous operations are performed to latch the commands at the positive edges of CLK.
Table 1 shows the truth table for the operation commands.
Table 1 Truth Table (Note (1), (2))
COMMAND
DEVICE
STATE
CKEn-1 CKEn DQM BS0, 1
A10
A0-A9,
A11
CS
RAS
CAS
WE
Bank Active
Bank Precharge
Precharge All
Idle
Any
Any
H
H
H
x
x
x
x
x
x
v
v
x
v
L
H
V
x
x
L
L
L
L
L
L
H
H
H
H
L
L
Write
Write with Auto-precharge
Read
Read with Auto-precharge
Mode Register Set
No-Operation
Burst Stop
Active
Active
Active
Active
Idle
Any
Active
(3)
(3)
(3)
(3)
(4)
H
H
H
H
H
H
H
x
x
x
x
x
x
x
x
x
x
x
x
x
x
v
v
v
v
v
x
x
L
H
L
H
v
x
x
v
v
v
v
v
x
x
L
L
L
L
L
L
L
H
H
H
H
L
H
H
L
L
L
L
L
H
H
L
L
H
H
L
H
L
Device Deselect
Auto-Refresh
Self-Refresh Entry
Self Refresh Exit
Clock suspend Mode
Entry
Any
Idle
Idle
idle
(S.R)
Active
H
H
H
L
L
H
x
H
L
H
H
L
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
H
L
L
H
L
x
x
L
L
x
H
x
x
L
L
x
H
x
x
H
H
x
x
x
Power Down Mode Entry
Idle
Active
(5)
H
H
L
L
x
x
x
x
x
x
x
x
H
L
x
H
x
H
X
H
Clock Suspend Mode Exit
Power Down Mode Exit
Data write/Output Enable
Data write/Output Disable
Active
Any
(Power
Down)
Active
Active
L
L
L
H
H
H
H
H
x
x
x
x
x
L
H
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
H
L
x
x
x
x
H
x
x
x
x
H
x
x
X
X
H
x
x
Notes:
(1) v = valid, x = Don't care, L = Low Level, H = High Level
(2) CKEn signal is input leve l when commands are provided.
(3) These are state of bank designated by BS0, BS1 signals.
(4) Device state is full page burst operation.
(5) Power Down Mode can not be entered in the burst cycle.
When this command asserts in the burst cycle, device state is clock suspend mode.
Publication Release Date: Jun. 25, 2013
- 12 -
Revision A04
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