> > However, in my haste to get a test going, I accidentally forgot to clip
> the
> > analog source into the PIC's A/D input pin, so it was just left
floating.
> > Later, I noticed that my Vref is no longer accurate at 4.096, but
instead
> is
> > around 4.80 V.
>
> I can't say whether the PIC got damaged, but it is certainly possible.  A

I must be stupid, but I don't understand how leaving an input pin floating
could "damage" the PIC.  Perhaps you could enlighten me on this.

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