On Sat, 27 May 2006, William Chops Westfield wrote:

> Is there a known failure mode for the pickit one where a 12F675
> will fail to verify, even though it seems to work?  This has been
> happening recently and I shrugged it off, but the resulting PICs
> have seemed to become "flakey" over time (or stop working entirely),
> and I'm wondering whether they were properly programmed in the
> first place.  (unfortunately, the PICs are in an app where there
> are other reasons they might fail as well...)

I had a 12C509JW die by static to MCLR. It became unreadable and 
unwritable but continued to work until it failed 'by itself' much later. 
The symptom was leakage between MCLR and Vss (about 50 ohms). This 
appeared a week after the event. JWs are pricey.

Peter
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