K4C89363AF Datasheet, PDF (19/58 Pages) Samsung semiconductor – 2,097,152-WORDS x 4 BANKS x 36-BITS DOUBLE DATA RATE Network-DRAM

K4C89363AF
Function Truth Table (Continued)
Mode Register Set Command Truth Table
Command (Symbol)
RDA (1st)
MRS (2nd)
CS
FN
L
H
L
X
BA1-BA0
X
V
Note : 6. Refer to "Mode Register Table".
Auto-Refresh Command Table
A14-A9
X
L
A8
A7
A6-A0
Notes
X
X
X
L
V
V
6
Function
Active
Auto-Refresh
Command
(Symbol)
Current
State
PD
n-1
n
CS
FN BA1-BA0 A14-A9 A 8
A7
A6-A0 Notes
WRA(1st)
Standby
H
H
L
L
X
X
X
X
X
REF(2nd)
Active
H
H
L
X
X
X
X
X
X
Self-Refresh Command Table
Function
Command
(Symbol)
Active
Self-Refresh Entry
Self-Refresh Continue
Self-Refresh Exit
WRA(1st)
REF(2nd)
-
SELFX
Current
State
Standby
Active
Self-Refresh
Self-Refresh
PD
n-1 n
HH
H
L
L
L
LH
C S FN
L
L
L
X
X
X
H
X
BA1-
BA0
A14-A9 A8 A7 A6-A0
Notes
X
X
X
X
X
X
X
X
X
X
7, 8
X
X
X
X
X
X
X
X
X
X
9
Power Down Table
Function
Command
(Symbol)
Power Down Entry
Power Down Continue
Power Down Exit
PDEN
-
PDEX
Current
State
Standby
Power Down
Power Down
PD
n-1 n
H
L
L
L
LH
CS FN
H
X
X
X
H
X
BA1-
BA0
A14-A9 A8
A 7 A6-A0 Notes
X
X
X
X
X
8
X
X
X
X
X
X
X
X
X
X
9
Notes :
7. PD has to be brought to Low within t _FPDL from REF command.
8. P D should be brought to Low after DQ’s state turned high impedance.
9. When PD is brought to High from Low, this function is executed asynchronously.
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REV. 0.0 Nov. 2002