Monitor supply voltage of chip?

[Acetronics2]

The datasheet for the 12f683 shows that it has an internal Fixed Voltage Reference that can be used to compare against the supply voltage.

hi, Dwight,

not really a reference for the 683 ...

- Programmable on-chip voltage reference
(CVREF) module (% of VDD)

so, here it is not possible to reach the goal ...

Alain