How to detect low battery in battery powered F683 circuit

[mark_s]

At this point without posting your complete code it's hard to guess what's wrong.

[tekart]

Got all the OUTPUTS working fine - no need for LATA configurations apparently. Struggling with some kind of hardware bug - so I'm basically good. No idea how or why I would configure LATA at this point as it all seems to work fine without any direct reference to it.

[flotulopex]

Maybe this application note from MICROCHIP can help ;-)

[peterdeco1]

I did this a long time ago with a 6V circuit. The pic was running from the battery (with a series diode = 5.4V) but there was a 3.3V regulator elsewhere on the circuit board. I ran a jumper wire from an ADC pin to the 3.3V reference voltage. As the battery voltage begins to drop, the ADC reading will begin to rise. When the ADC reading reached the desired point, the SOUND command alerted you.

[peterdeco1]

I just realized I posted the above last October.