UPD43256BGW-70X-9JL NEC [NEC], UPD43256BGW-70X-9JL Datasheet - Page 11

• Manufacturer Part Number: UPD43256BGW-70X-9JL
• Description: 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT EXTENDED TEMPERATURE OPERATION
• Manufacturer: NEC [NEC]

•
Write Cycle (1/2)
Note
Remark These AC characteristics are in common regardless of package types and L, LL versions.
Write Cycle (2/2)
Note
Remark These AC characteristics are in common regardless of package types.
Write cycle time
/CS to end of write
Address valid to end of write
Write pulse width
Data valid to end of write
Data hold time
Address setup time
Write recovery time
/WE to output in high impedance
Output active from end of write
Write cycle time
/CS to end of write
Address valid to
end of write
Write pulse width
Data valid to end
of write
Data hold time
Address setup time
Write recovery time
/WE to output in
high impedance
Output active
from end of write
Parameter
See the output load.
See the output load.
Parameter
Symbol
t
t
t
t
t
t
t
t
t
t
WHZ
OW
WC
CW
AW
WP
DW
WR
DH
AS
MIN.
PD43256B-
85
70
70
60
60
5
0
0
5
A85X
Symbol
t
t
t
t
t
t
t
t
t
t
WHZ
OW
WC
CW
AW
WP
DW
WR
MAX.
DH
AS
35
MIN.
V
100
PD43256B-
70
70
60
60
MIN.
5
0
0
5
CC
PD43256B-70X
70
60
60
55
30
5
0
0
5
A10X
Data Sheet M11012EJ4V0DS
3.0 V
MAX.
35
MAX.
30
MIN.
120
PD43256B-
90
90
80
70
5
0
0
5
A12X
MAX.
40
MIN.
PD43256B-85X
85
70
70
60
35
5
0
0
5
V
MIN.
100
CC
PD43256B-
70
70
60
60
5
0
0
5
B10X
4.5 V
MAX.
MAX.
30
35
MIN.
V
120
PD43256B-
90
90
80
70
5
0
0
5
CC
B12X
MIN.
PD43256B-AxxX
PD43256B-BxxX
100
80
80
70
40
5
0
0
5
2.7 V
MAX.
40
MAX.
MIN.
150
100
100
PD43256B-X
PD43256B-
90
80
35
5
0
0
5
B15X
MAX.
40
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
dition
Note
Con-
dition
Note
Con-
11