Wouter van Ooijen wrote:
>> E.g. the 16F690 has such a 600mV reference. Works with
>> comparators and can be selected as ADC input.
>
> I knew it existed somewhere.

But that's not what you want since it requires some external parts.  Two
resistors are required best I can tell.  As I said before, I think it can be
done with the 18F2520 without *any* specific external parts for the
bootloader.


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