Next EPROM Question - Sizes
cclist at sydex.com
Sun Sep 16 21:55:12 CDT 2007
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).
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