General Description

The NM27C240 is a high performance Electrically Programmable UV erasable ROM (EPROM). It contains 4,194,304 bits configured as 256k x 16 bits. It is offered in both erasable versions for prototyping and early production applications as well as nonerasable, plastic packaged versions that are ideal for high volume and automated assembly applications.

Features

■ High performance CMOS

— 100 ns access time

■ Fast turn-off for microprocessor compatibility

■ Simplified upgrade path

— VPP and PGM are “Don’t Care” during normal read

operation

■ Compatible with 27240 and 27C240 EPROMs

■ JEDEC standard pin configuration

— 40-pin DIP package

— 44-pin PLCC package

■ Manufacturer’s identification code

■ Fast programming algorithm