W24257AJ-8A Ver la hoja de datos (PDF) - Winbond

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W24257AJ-8A

32K x 8 HIGH SPEED CMOS STATIC RAM

Winbond 

W24257AJ-8N

32K × 8 HIGH SPEED CMOS STATIC RAM

GENERAL DESCRIPTION

The W24257AJ-8N is a high speed, low power CMOS static RAM organized as 32768 × 8 bits that

operates on a single 5-volt power supply. This device is manufactured using Winbond's high

performance CMOS technology.

FEATURES

• High speed access time: 8 nS (max.)

• Single +5V power supply

• Fully static operation

PIN CONFIGURATIONS

• All inputs and outputs directly TTL compatible

• Three-state outputs

• Available packages: 28-pin 300 mil SOJ

BLOCK DIAGRAM

A14 1

A12 2

28

VDD

27

WE

A7 3

26

A13

A6 4

25

A8

A5 5

24

A9

A4 6

23

A11

A3 7

22

OE

28-pin

A2 8

SOJ 21

A10

A1 9

20

CS

A0 10

19

I/O8

I/O1 11

18

I/O7

I/O2 12

17

I/O6

I/O3 13

VSS 14

16

I/O5

15

I/O4

VDD

VSS

A0

.

.

A14

DECODER

CORE

ARRAY

CS

OE

CONTROL

WE

I/O1

DATA I/O

.

.

I/O8

PIN DESCRIPTION

SYMBOL

DESCRIPTION

A0−A14 Address Inputs

I/O1−I/O8 Data Inputs/Outputs

CS

Chip Select Input

WE

Write Enable Input

OE

Output Enable Input

VDD

Power Supply

VSS

Ground

Publication Release Date: February 1998

-1-

Revision A2

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