W981616AH
TABLE OF OPERATING MODES
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
Bank Active
Bank Precharge
Precharge All
Write
Write with
Autoprecharge
Read
Read with
Autoprecharge
Mode Register Set
No-Operation
Burst Stop
Device Deselect
Auto-Refresh
Self-Refresh Entry
Self-Refresh Exit
Clock Suspend Mode
Entry
Power Down Mode
Entry
Clock Suspend Mode
Exit
Power Down Mode Exit
Device
State
Idle
Any
Any
Active (3)
Active (3)
Active (3)
Active (3)
Idle
Any
Active (4)
Any
Idle
Idle
Idle
(S.R)
Active
Idle
Active (5)
Active
Any
(Power
down)
Active
Active
CKEn-1
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
H
L
L
L
H
H
CKEn
X
X
X
X
X
X
X
X
X
X
X
H
L
H
H
L
L
L
H
H
H
X
X
DQM
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
BA
V
V
X
V
V
V
V
V
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
A10
V
L
H
L
H
L
H
V
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
A9-0
V
X
X
V
V
V
V
V
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CS
L
L
L
L
L
L
L
L
L
L
H
L
L
H
L
X
H
L
X
H
L
X
X
RAS
L
L
L
H
H
H
H
L
H
H
X
L
L
X
H
X
X
H
X
X
H
X
X
CAS
H
H
H
L
L
L
L
L
H
H
X
L
L
X
H
X
X
H
X
X
H
X
X
WE
H
L
L
L
L
H
H
L
H
L
X
H
H
X
X
X
X
X
X
X
X
X
X
Data Write/Output
Enable
Data Write/Output
Disable
Notes:
(1) V = Valid, X = Don't care, L = Low Level, H = High Level
(2) CKEn signal is input level when commands are provided.
(3) These are state of bank designated by BA 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.
-9-
Publication Release Date: February 2000
Revision A2
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