UPD43256BGW-B12-9JL NEC [NEC], UPD43256BGW-B12-9JL Datasheet - Page 13

• Manufacturer Part Number: UPD43256BGW-B12-9JL
• Description: 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT
• 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
Write recovery
/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
WC
CW
DW
WR
OW
AW
WP
DH
AS
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
85
70
70
60
60
10
PD43256B
0
0
0
-A85
Symbol
30
t
t
t
t
t
t
t
t
t
t
WHZ
WC
CW
DW
WR
OW
AW
WP
DH
AS
V
100
70
70
60
60
10
PD43256B
0
0
0
CC
-A10
Data Sheet M10770EJCV0DS00
3.0 V
MIN.
35
70
50
50
55
30
10
0
0
0
PD43256B-70
120
90
90
80
70
10
PD43256B
0
0
0
-A12
40
MAX.
30
V
CC
100
70
70
60
60
10
PD43256B
0
0
0
-B10
4.5 V
PD43256B-A85/A10/A12
PD43256B-B10/B12/B15
35
MIN.
85
70
70
60
35
10
0
0
0
PD43256B-85
V
120
90
90
80
70
10
PD43256B
CC
0
0
0
-B12
2.7 V
40
MAX.
30
150
100
100
90
80
10
PD43256B
0
0
0
-B15
PD43256B
50
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit Con-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Condition
Note
dition
Note
13