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www.fairchildsemi.com

www.fairchildsemi.com

FM27C512 Rev. A

FM27C512

524,288-Bit (64K x 8) High Performance CMOS EPROM

General Description

The FM27C512 is a high performance 512K UV Erasable Electri-

cally Programmable Read Only Memory (EPROM). It is manufac-

tured using Fairchild’s proprietary CMOS AMG™ EPROM tech-

nology for an excellent combination of speed and economy while

providing excellent reliability.

The FM27C512 provides microprocessor-based systems storage

capacity for portions of operating system and application soft-

ware. Its 90 ns access time provides no wait-state operation with

high-performance CPUs. The FM27C512 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 FM27C512 is configured in the standard JEDEC EPROM

pinout which provides an easy upgrade path for systems which are

currently using standard EPROMs.

Block Diagram

May 2001

The FM27C512 is one member of a high density EPROM Family

which range in densities up to 4 Megabit.

Features

I High performance CMOS

— 90, 120, 150 ns access time

I Fast turn-off for microprocessor compatibility

I Manufacturers identification code

I JEDEC standard pin configuration

— 32-pin PLCC package

— 28-pin CERDIP package

DS800035-1

AMG is a trademark of WSI, Inc.

© 2001 Fairchild Semiconductor Corporation

Output Enable and

Chip Enable Logic

Y Decoder

X Decoder

Output

Buffers

524,288-Bit

Cell Matrix

Data Outputs O0 - O7

VCC

GND

VPP

OE

CE/PGM

A0 - A15

Address

Inputs