UPD43256BCZ-85L 查看數據表（PDF） - NEC => Renesas Technology
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UPD43256BCZ-85L 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
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 1
ns
ns
ns
ns Note 2
ns
ns
ns
Notes 1. See the output load shown in Figure 1 except for µPD43256B-A, 43256B-B.
2. See the output load shown in Figure 2 except for µPD43256B-A, 43256B-B.
Remark These AC characteristics are in common regardless of package types and L, LL versions.
Read Cycle (2/2)
Parameter
VCC ≥ 3.0 V
VCC ≥ 2.7 V
Con-
Symbol µPD43256B-A85 µPD43256B-A10 µPD43256B-A12 µPD43256B-B10 µPD43256B-B12 µPD43256B-B15 Unit dition
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
Read cycle time
tRC
85
100
120
100
120
150
ns
Address access time
tAA
85
100
120
100
120
150 ns Note
CS access time
tACS
85
100
120
100
120
150 ns
OE access time
tOE
50
60
60
60
60
70 ns
Output hold from address change tOH 10
10
10
10
10
10
ns
CS to output in low impedance tCLZ 10
10
10
10
10
10
ns
OE to output in low impedance tOLZ 5
5
5
5
5
5
ns
CS to output in high impedance tCHZ
35
35
40
35
40
50 ns
OE to output in high impedance tOHZ
35
35
40
35
40
50 ns
Note Loading condition is 1TTL + 100 pF.
Remark These AC characteristics are in common regardless of package types and L, LL versions.
10
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