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FM27C256

262,144-Bit (32K x 8) High Performance CMOS EPROM

Fairchild Semiconductor 

January 2000

FM27C256

262,144-Bit (32K x 8) High Performance CMOS EPROM

General Description

The FM27C256 is a 256K Electrically Programmable Read Only

Memory. It is manufactured in Fairchild’s latest CMOS split gate

EPROM technology which enables it to operate at speeds as fast

as 90 ns access time over the full operating range.

The FM27C256 provides microprocessor-based systems exten-

sive storage capacity for large portions of operating system and

application software. Its 90 ns access time provides high speed

operation with high-performance CPUs. The FM27C256 offers a

single chip solution for the code storage requirements of 100%

firmware-based equipment. Frequently-used software routines

are quickly executed from EPROM storage, greatly enhancing

system utility.

The FM27C256 is configured in the standard EPROM pinout

which provides an easy upgrade path for systems which are

currently using standard EPROMs.

The FM27C256 is one member of a high density EPROM Family

which range in densities up to 4 Mb.

Features

I High performance CMOS

— 90 ns access time

I JEDEC standard pin configuration

— 28-pin PDIP package

— 32-pin chip carrier

— 28-pin CERDIP package

I Drop-in replacement for 27C256 or 27256

I Manufacturer’s identification code

Block Diagram

VCC

GND

VPP

OE

CE/PGM

Output Enable

and Chip Enable Logic

Data Outputs O0 - O7

Output

Buffers

Y Decoder

A0 - A14

Address

Inputs

X Decoder

Y Gating

© 1998 Fairchild Semiconductor Corporation

1

FM27C256

DS800034-1

www.fairchildsemi.com

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