LH5164A Ver la hoja de datos (PDF) - Sharp Electronics

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componentes Descripción

Fabricante

LH5164A

CMOS 64K (8K × 8) Static RAM

Sharp Electronics 

LH5164A/AH

A3 7

A4 6

A5 5

A6 4

A7 3

A8 25

A9 24

A12 2

I/O1 11

I/O2 12

I/O3 13

I/O4 15

I/O5 16

I/O6 17

I/O7 18

I/O8 19

CMOS 64K (8K × 8) Static RAM

MEMORY

ARRAY

(256 x 256)

28 VCC

14 GND

DATA CONTROL

I/O

CIRCUITS

COLUMN DECODERS

COLUMN ADDRESS

BUFFER

WE 27

OE 22

CE2 26

CE1 20

NOTE: Pin numbers apply to 28-pin DIP, SK-DIP, or SOP.

10 9 8 21 23

A0 A1 A2 A10 A11

Figure 3. LH5164A/AH Block Diagram

5164A-2

PIN DESCRIPTION

SIGNAL

A0 - A12

CE1 - CE2

WE

OE

PIN NAME

Address inputs

Chip Enable input

Write Enable input

Output Enable input

TRUTH TABLE

CE1

CE2

WE

H

X

X

X

L

X

L

H

L

L

H

H

L

H

H

NOTE:

1. X = H or L

OE

MODE

X

Deselect

X

Deselect

X

Write

L

Read

H

Output disable

SIGNAL

I/O1 - I/O8

VCC

GND

NC

PIN NAME

Data inputs and outputs

Power supply

Ground

No connection

I/O1 - I/O8

High-Z

High-Z

DIN

DOUT

High-Z

SUPPLY CURRENT

Standby (ISB)

Standby (ISB)

Operating (ICC)

Operating (ICC)

Operating (ICC)

NOTE

1

1

1

2

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