if all you need to do is calculate vdd then
connect adc to fvr and measure fvr count
vdd = 1024*fvr_const/fvr_count
fvr_const would be very close to 1.000 and could be determined using a calibrated power supply if required
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Re: PIC16F1503 Fixed Voltage Reference
if all you need to do is calculate vdd then
connect adc to fvr and measure fvr count
vdd = 1024*fvr_const/fvr_count
fvr_const would be very close to 1.000 and could be determined using a calibrated power supply if required
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