Next EPROM Question - Sizes

[Chuck Guzis]

On 16 Sep 2007 at 19:34, Zane H. Healy wrote:

> So the question of the minute is this, is it possible to substitute a 
> 27C256 for a smaller 27C128?

For reading, sure.  The difference is pin 27--PGM/ (program enable/) 
in the 128 and A14 in the 256.  So program your data into the upper 
half of the 256 (or just program two copies of it--then it doesn't 
matter if pin 27 is high or low).

Cheers,
Chuck