UPD448012-B55X データシートの表示（PDF） - NEC => Renesas Technology
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UPD448012-B55X
NEC => Renesas Technology
UPD448012-B55X Datasheet PDF : 24 Pages
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µPD448012-X
Read Cycle (1/2) (B version)
Parameter
Symbol
µPD448012
-B55X
VCC ≥ 2.7 V
µPD448012 µPD448012
-B70X
-B85X
µPD448012
-B10X
Unit Condition
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
Read cycle time
tRC
55
70
85
100
ns
Address access time
tAA
55
70
85
100 ns Note 1
/CE1 access time
tCO1
55
70
85
100 ns
CE2 access time
tCO2
55
70
85
100 ns
/OE to output valid
tOE
30
35
40
50 ns
/LB, /UB to output valid
tBA
55
70
85
100 ns
Output hold from address change
tOH
10
10
10
10
ns
/CE1 to output in low impedance
tLZ1
10
10
10
10
ns Note 2
CE2 to output in low impedance
tLZ2
10
10
10
10
ns
/OE to output in low impedance
tOLZ
0
0
0
0
ns
/LB, /UB to output in low impedance
tBLZ
10
10
10
10
ns
/CE1 to output in high impedance
tHZ1
20
25
30
35 ns
CE2 to output in high impedance
tHZ2
20
25
30
35 ns
/OE to output in high impedance
tOHZ
20
25
30
35 ns
/LB, /UB to output in high impedance tBHZ
20
25
30
35 ns
Notes 1. The output load is 1TTL + 50 pF.
2. The output load is 1TTL + 5 pF.
Read Cycle (2/2) (C version)
Parameter
Symbol
µPD448012
-C70X
VCC ≥ 2.2 V
µPD448012 µPD448012
-C85X
-C10X
µPD448012
-C12X
Unit Condition
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
Read cycle time
tRC
70
85
100
120
ns
Address access time
tAA
70
85
100
120 ns Note 1
/CE1 access time
tCO1
70
85
100
120 ns
CE2 access time
tCO2
70
85
100
120 ns
/OE to output valid
tOE
35
40
50
60 ns
/LB, /UB to output valid
tBA
70
85
100
120 ns
Output hold from address change
tOH
10
10
10
10
ns
/CE1 to output in low impedance
tLZ1
10
10
10
10
ns Note 2
CE2 to output in low impedance
tLZ2
10
10
10
10
ns
/OE to output in low impedance
tOLZ
0
0
0
0
ns
/LB, /UB to output in low impedance
tBLZ
10
10
10
10
ns
/CE1 to output in high impedance
tHZ1
25
30
35
40 ns
CE2 to output in high impedance
tHZ2
25
30
35
40 ns
/OE to output in high impedance
tOHZ
25
30
35
40 ns
/LB, /UB to output in high impedance tBHZ
25
30
35
40 ns
Notes 1. The output load is 1TTL + 30 pF.
2. The output load is 1TTL + 5 pF.
Data Sheet M14466EJ5V0DS
9
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