upd43256b-x Renesas Electronics Corporation., upd43256b-x Datasheet - Page 11

• Manufacturer Part Number: upd43256b-x
• Description: 256k-bit Cmos Static Ram 32k-word By 8-bit Extended Temperature Operation
• Manufacturer: Renesas Electronics Corporation.

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
WC
CW
AW
WP
DW
WR
OW
DH
AS
μ
MIN.
PD43256B-
85
70
70
60
60
5
0
0
5
A85X
Symbol
t
t
t
t
t
t
t
t
t
t
WHZ
WC
CW
AW
WP
DW
WR
OW
MAX.
DH
AS
35
μ
MIN.
V
100
PD43256B-
μ
MIN.
70
70
60
60
5
0
0
5
CC
PD43256B-70X
70
60
60
55
30
5
0
0
5
A10X
≥ 3.0 V
Data Sheet M11012EJ6V0DS
MAX.
35
MAX.
30
μ
MIN.
120
PD43256B-
90
90
80
70
5
0
0
5
A12X
MAX.
40
μ
MIN.
PD43256B-85X
85
70
70
60
35
5
0
0
5
V
μ
MIN.
100
CC
PD43256B-
70
70
60
60
5
0
0
5
B10X
≥ 4.5 V
MAX.
MAX.
30
35
μ
MIN.
V
120
PD43256B-
90
90
80
70
5
0
0
5
CC
μ
μ
B12X
MIN.
PD43256B-AxxX
PD43256B-BxxX
100
80
80
70
40
≥ 2.7 V
5
0
0
5
MAX.
40
μ
μ
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