HM62256A データシートの表示（PDF） - Hitachi -> Renesas Electronics
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HM62256A Datasheet PDF : 11 Pages
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HM62256A Series
HM62256A Series
AC Characteristics (Ta = 0 to +70°C, VCC = 5 V ± 10%, unless otherwise noted.)
Test Conditions
• Input pulse levels: 0.8 V to 2.4 V
• Input and output timing refernce levels: 1.5 V
• Input rise and fall times: 5 ns
• Output load: 1 TTL Gate + CL (100 pF)
(Including scope & jig)
Read Cycle
HM62256A-8 HM62256A-10 HM62256A-12 HM62256A-15
—————– —————– —————– —————–
Parameter
Symbol Min Max Min Max Min Max Min Max Unit Note
———————————————————————————————————————————————–
Read cycle time
tRC
85 — 100 — 120 — 150 — ns
———————————————————————————————————————————————–
Address access time tAA
— 85 — 100 — 120 — 150 ns
———————————————————————————————————————————————–
Chip select
access time
tACS
— 85 — 100 — 120 — 150 ns
———————————————————————————————————————————————–
Output enable to
output valid
tOE
— 45 — 50 — 60 — 70 ns
———————————————————————————————————————————————–
Chip selection to
output in low-Z
tCLZ
10 — 10 — 10 — 10 — ns 2
———————————————————————————————————————————————–
Output enable to
output in low-Z
tOLZ
5
—5
—5
—5
— ns 2
———————————————————————————————————————————————–
Chip deselection to
tCHZ
0
30 0
35 0
40 0
50 ns
1, 2
output in high-Z
———————————————————————————————————————————————–
Output disable to
output in high-Z
tOHZ
0
30 0
35 0
40 0
50 ns
1, 2
———————————————————————————————————————————————–
Output hold from
address change
tOH
5
— 10 — 10 — 10 —
ns
———————————————————————————————————————————————–
6
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