EPROM Question

Zane H. Healy healyzh at aracnet.com
Fri Sep 14 14:30:40 CDT 2007

> I've been trying to google up an answer, but have had no luck.  What is the
> difference between a 27256 and a 27C256 EPROM?  Can a 27C256 EPROM be
> substituted for a 27256?
> Zane

It never fails...

27256 = NMOS
27C256 = CMOS

A 27C256 can be substituted for a 27256, but it isn't advisable to go the
other way as NMOS uses more power.


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