On Fri, 19 Jun 1998 15:06:16 -0400 "John P. Leonard" <leonard@svsu.edu>
writes:

> but a
>couple
>hours and several write/erase cycles later and they won't start-up
>unless
>I set Vcc to nearly 5V.

Try doubling your erase time, and make sure to keep the windows clean.
Incompletely erased chips won't work at low voltage.  The bits that are
supposed to be erased are more likely to read as programmed as the
voltage drops.


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