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General Description

The NM27C256 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 NM27C256 provides microprocessor-based systems extensive 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 NM27C256 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.

Features

¡ö High performance CMOS

¡ª90 ns access time

¡ö JEDEC standard pin configuration

¡ª 28-pin PDIP package

¡ª 32-pin chip carrier

¡ª 28-pin CERDIP package

¡ö Drop-in replacement for 27C256 or 27256

¡ö Manufacturer¡¯s identification code