upd43256b Renesas Electronics Corporation., upd43256b Datasheet - Page 14

• Manufacturer Part Number: upd43256b
• Description: 256k-bit Cmos Static Ram 32k-word By 8-bit
• 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.
14
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
μ
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
μ
V
100
70
70
60
60
10
PD43256B
0
0
0
CC
Data Sheet M10770EJEV0DS
-A10
≥ 3.0 V
MIN.
35
70
50
50
55
30
10
0
0
0
μ
PD43256B-70
μ
120
PD43256B
90
90
80
70
10
0
0
0
-A12
40
MAX.
30
V
μ
CC
100
70
70
60
60
10
PD43256B
0
0
0
≥ 4.5 V
-B10
μ
μ
PD43256B-A85/A10/A12
PD43256B-B10/B12/B15
35
MIN.
85
70
70
60
35
10
0
0
0
μ
PD43256B-85
μ
V
120
PD43256B
90
90
80
70
10
0
0
0
CC
-B12
≥ 2.7 V
40
MAX.
30
μ
150
100
100
90
80
10
PD43256B
0
0
0
μ
-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