HM62864 datasheet(7/15 Pages) ETC | 65536-word 쨈 8-bit High Speed CMOS Static RAM

Part No.	HM62864

Description	65536-word 쨈 8-bit High Speed CMOS Static RAM

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HM62864 Series

7

AC Characteristics (Ta = 0 to +70

°C, V

CC = 5 V ± 10%, unless otherwise noted.)

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: HM62864-5: 1 TTL + 30 pF (Including scope & jig)

HM62864-7/8: 1 TTL + 100 pF (Including scope & jig)

Read Cycle

HM62864-5

HM62864-7

HM62864-8

Parameter

Symbol Min

Max

Min

Max

Min

Max

Unit

Notes

Read cycle time

t

RC

55

—

70

—

85

—

ns

Address access time

t

AA

—

55

—

70

—

85

ns

Chip select access time

CS1

t

CO1

—

55

—

70

—

85

ns

CS2

t

CO2

—

55

—

70

—

85

ns

Output enable to output valid

t

OE

—

30

—

40

—

45

ns

Chip selection to output in

CS1

t

LZ1

5

—

10

—

10

—

ns

2

low-Z

CS2

t

LZ2

5

—

10

—

10

—

ns

2

Output enable to output in

low-Z

t

OLZ

5

—

5

—

5

—

ns

2

Chip deselection in output in

CS1

t

HZ1

0

20

0

25

0

30

ns

1, 2

high-Z

CS2

t

HZ2

0

20

0

25

0

30

ns

1, 2

Output disable to output in

high-Z

t

OHZ

0

20

0

25

0

30

ns

1, 2

Output hold from address

change

t

OH

5

—

10

—

10

—

ns

Notes: 1. t

HZ and t OHZ are defined as the time at which the outputs achieve the open circuit conditions and

are not referred to output voltage levels.

2. This parameter is sampled and not 100% tested.

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