HM62256BLFP-7T データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HM62256BLFP-7T

256k SRAM (32-kword × 8-bit)

Hitachi -> Renesas Electronics 

HM62256B Series

AC Characteristics (Ta = 0 to +70°C, VCC = 5.0 V ± 10%)

Test Conditions

• Input pulse levels: 0.8 V to 2.4 V

• Input rise and fall time: 5 ns

• Input and output timing reference levels: 1.5 V

• Output load: 1 TTL Gate + CL (50 pF) (HM62256B-5)

1 TTL Gate + CL (100 pF) (HM62256B-7/8)

(Including scope & jig)

Read Cycle

Parameter

Read cycle time

Address access time

Chip select to access time

Output enable to output valid

Chip select to output in low-Z

Output enable to output in low-Z

Chip deselect to output in high-Z

Output disable to output in high-Z

Output hold from address change

HM62256B

-5

-7

Symbol Min Max Min

t RC

55 — 70

t AA

— 55 —

t ACS

— 55 —

t OE

— 35 —

t CLZ

5 — 10

t OLZ

5 —5

t CHZ

0 20 0

t OHZ

0 20 0

t OH

5 —5

-8

Max Min

— 85

70 —

70 —

40 —

— 10

—5

25 0

25 0

—5

Max Unit

— ns

85 ns

85 ns

45 ns

— ns

— ns

30 ns

30 ns

— ns

Notes

2

2

1, 2

1, 2

7

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