K4C561638C-TCD4000 Datasheet, PDF (20/42 Pages) Samsung semiconductor – 256Mb Network-DRAM

K4C5608/1638C
256Mb Network-DRAM
Write Command Table
K4C561638C-TC
Command (Symbol)
WRA (1st)
LAL (2nd)
CS FN BA1-BA0 A14 A13 A12 A11 A10-A9 A8 A7 A6-A0
L
L
BA
UA
UA
UA
UA
UA
UA UA
UA
H
X
X
LVWO LVW1 UVW0 UVW1
X
X
X
LA
K4C560838C-TC
Command (Symbol)
WRA (1st)
LAL (2nd)
CS FN BA1-BA0 A14 A13 A12 A11 A10-A9 A8 A7 A6-A0
L
L
BA
UA
UA
UA
UA
UA
UA UA
UA
H
X
X
VWO VW1
X
X
X
X
LA
LA
Note : 6. A14 to A11 are used for variable Write Length (VW) control at Write Operation.
VW Truth Table
BL = 2
BL = 4
Function
Write All Words
Write First One Word
Reserved
Write All Words
Write First Two Words
Write First One Word
VW0
L
H
L
H
L
H
VW1
X
X
L
L
H
H
Note : 7. For x16 device, LVW0 and LVW1 control DQ0-DQ7, UVW0 and UVW1 control DQ8-DQ15.
Mode Register Set Command Truth Table
Command (Symbol)
RDA (1st)
MRS (2nd)
CS
FN
L
H
L
X
BA1-BA0
X
V
A14-A9
X
L
A8
A7
X
X
L
V
Note : 8. Refer to "Mode Register Table".
A6-A0
X
V
Notes
8
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REV. 0.7 Aug. 2003