General Description
The FM27C256 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.

Features
■ High performance CMOS
    —90 ns access time
■ JEDEC standard pin configuration
    — 28-pin PDIP package
    — 32-pin chip carrier
    — 28-pin CERDIP package
■ Drop-in replacement for 27C256 or 27256
■ Manufacturer’s identification code