UPD43256B-AXX 查看數據表（PDF） - NEC => Renesas Technology
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UPD43256B-AXX Datasheet PDF : 24 Pages
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µPD43256B
Read Cycle (1/2)
Parameter
Symbol
Read cycle time
tRC
Address access time
tAA
/CS access time
tACS
/OE access time
tOE
Output hold from address change
tOH
/CS to output in low impedance
tCLZ
/OE to output in low impedance
tOLZ
/CS to output in high impedance
tCHZ
/OE to output in high impedance
tOHZ
Note See the output load.
VCC ≥ 4.5 V
µPD43256B-70
µPD43256B-85
µPD43256B-A85/A10/A12
µPD43256B-B10/B12/B15
MIN.
MAX.
MIN.
MAX.
70
85
70
85
70
85
35
40
10
10
10
10
5
5
30
30
30
30
Unit Condition
ns
ns
Note
ns
ns
ns
ns
ns
ns
ns
Remark These AC characteristics are in common regardless of package types and L, LL versions.
Read Cycle (2/2)
Parameter
Read cycle time
Address access
time
/CS access time
/OE access time
Output hold from
address change
/CS to output in
low impedance
/OE to output in
low impedance
/CS to output in
high impedance
/OE to output in
high impedance
Symbol
VCC ≥ 3.0 V
VCC ≥ 2.7 V
Unit Con-
µPD43256B µPD43256B µPD43256B µPD43256B µPD43256B µPD43256B
-A85
-A10
-A12
-B10
-B12
-B15
dition
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
tRC
85
100
120
100
120
150
ns
tAA
85
100
120
100
120
150 ns Note
tACS
85
100
120
100
120
150 ns
tOE
50
60
60
60
60
70 ns
tOH
10
10
10
10
10
10
ns
tCLZ
10
10
10
10
10
10
ns
tOLZ
5
5
5
5
5
5
ns
tCHZ
35
35
40
35
40
50 ns
tOHZ
35
35
40
35
40
50 ns
Note See the output load.
Remark These AC characteristics are in common regardless of package types.
Data Sheet M10770EJCV0DS00
11
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