Octavio Nogueira wrote:
>
> I'm developing a battery operated device with 16C71 and I need the 16C71
> to turn the power off. I thought in a transistor controlled by RA4.
> Please take a look in the attached file (just 2K) and say if it's safe.
> Or, does anyone have a better idea?

Two suggestions:

1. Voltage source: PIC voltage operating range is 2.5v to 6v .
   Use another voltage battery or apply voltage regulator.

2. Add capacitor aproximatly 20uF after switch , i.e. in parallel with
   PIC power supply pins ("+" capacitor to Vdd and "-" to Vss PIC pins)

WBR Dmitry.