>One question about your design.  Is the switch momentary contact?  If
>not, I see no way your circuit will work.  I assume you intend the PIC
>to start up when the button is pressed and set up RA4 as an output and
>drive it low (I suggest you set it low first, before setting it up as
>an output to prevent any risk of RA4 trying to drive high while the
>button is pressed), thus latching the PIC power on, even after the
>button is released.
>
>CIAO - Martin.

Thanks to all that respond my question and,

Yes, the switch is momentary, there is a 5V regulator after the transistor,
what I'm worried about is the 8.3V in the RA4 when the circuit is off. Is
this safe?

Regards,

Octavio

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Octavio Nogueira  - e-mail:   nogueira@mandic.com.br
http://www.geocities.com/~oct_nogueira
"ProPic" Production PIC Programmer Windows under US$20
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