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NM27C128 131,072-Bit (16K x 8) High Performance CMOS EPROM

July 1998

NM27C128

131,072-Bit (16K x 8) High Performance CMOS EPROM

General Description

The NM27C128 is a high performance 128K UV Erasable Electri-

cally Programmable Read Only Memory. It is manufactured with

Fairchild鈥檚 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 NM27C128 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 NM27C128 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 NM27C128 is configured in the standard EPROM pinout

which provides an easy upgrade path for systems which are

currently using standard EPROMs.

The NM27C128 is one member of a high density EPROM Family

which range in densities up to 4 Mb.

Features

s

High performance CMOS

鈥?90 ns access time

s

Fast turn-off for microprocessor compatibility

s

JEDEC standard pin configuration

鈥?28-pin PDIP package

鈥?32-pin chip carrier

鈥?28-pin CERDIP package

s

Drop-in replacement for 27C128 or 27128

s

40% faster programming time with Fairchild鈥檚 turbo algorithm

Block Diagram

VCC

GND

VPP

Data Outputs O0 - O7

OE

PGM

CE

Output Enable,

and Chip

Enable Logic

Output

Buffers

..

Y Gating

Y Decoder

A0 - A14

Address

Inputs

131,072-Bit

Cell Matrix

.......

X Decoder

DS011329-1

漏 1998 Fairchild Semiconductor Corporation

1

www.fairchildsemi.com

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