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NM27C020 2,097,152-Bit (256K x 8) UV Erasable CMOS EPROM

July 1998

NM27C020

2,097,152-Bit (256K x 8) UV Erasable CMOS EPROM

General Description

The NM27C020 is a high speed 2 Megabit CMOS UV-EPROM

manufactured on Fairchild鈥檚 advanced sub-micron technology.

Utilizing the AMG architecture, this advanced CMOS process

delivers high speeds while consuming low power.

The NM27C020 provides microprocessor-based systems exten-

sive storage capacity for large portions of operating systems and

application software. Its 100ns access time provides no-wait-state

operation with high-performance CPUs.

The NM27C020 offers a single chip solution for the code storage

requirements of 100% firmware-based equipment. Frequently-

used software routines are quickly executed from EPROM stor-

age, greatly enhancing system utility.

The NM27C020 is manufactured using Fairchild鈥檚 advanced

CMOS AMG EPROM technology, and is one member of a high

density Fairchild EPROM series family which range in densities up

to 4Mb.

Features

s

High performance CMOS

鈥?100 ns access time

s

Simplified upgrade path

鈥擵

PP

and PGM are 鈥淒on鈥檛 Care鈥?during normal read

operation

s

Manufacturers identification code

s

JEDEC Standard Pin Configuration

鈥?32-pin CERDIP package

鈥?32-pin PLCC package

鈥?32-pin PDIP package

Block Diagram

VCC

GND

VPP

OE

PGM

CE

Output Enable,

Chip Enable, and

Program Logic

Data Outputs O0 - O7

Output

Buffers

Y Decoder

..

2,097,152-Bit

Cell Matrix

A0 - A17

Address

Inputs

.......

X Decoder

DS010835-1

漏 1998 Fairchild Semiconductor Corporation

1

www.fairchildsemi.com

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