On Sat, 9 Aug 2003, Denny Esterline wrote:

> The part I'm having a hard time wrapping my noodle around is, what do I use
> for a reference voltage?

For a 12F675, the only thing I could think of would be a Zener Vref at a
low-ish voltage, and run Vdd thru a divider to get, say, a 0-2.5V range
instead of 0-5V.  Problem is, the PIC will operate well below the minumum
Vref value, and the extra stuff would probably draw more curent than the
PIC itself without using the ADC.

If you figure something out, I'm interested too.  I have a 16F628 project
now for which I'd love to figure out the same thing.  Have not gotten TOO
involved with it so far, it's just a little thing I'd like to figure out
some time.

Dale
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