Power on could be too lazy, PWRTE is disabled an BOR enabled to a
wrong thresold voltage.

Vasile

On 9/22/09, Quintin Beukes <quintin@last.za.net> wrote:
> These guys say that they do have 2 capacitors over ground/positive.
> Though not "as close as possible to the pic", and not those sizes.
>
> Further, we're using an external oscillator. Though the static problem
> I don't think is our biggest problem. Our real "problem" is that they
> intermittently go into infinite reset loops when powered on.
>
> Quintin Beukes
>
>
>
> On Tue, Sep 22, 2009 at 4:56 PM, Picbits Sales <sales@picbits.co.uk> wrote:
> > I've seen this happen a lot in PICs that aren't adequately decoupled.
> >
> > Check you have a decoupling capacitor (or capacitors) as close to the power
> > pins as possible. Try the circuit with a 100nF + 10nF + 1nF in parallel to
> > the power pins.
> >
> > Are you using an internal or external oscillator ? It could be the
> > oscillator design becomes unstable when the extra capacitance of the human
> > body enters the equation.
> >
> > Dom
> >
> > ----- Original Message -----
> > From: "Quintin Beukes" <quintin@last.za.net>
> > To: <piclist@mit.edu>
> > Sent: Tuesday, September 22, 2009 3:39 PM
> > Subject: Static Reboot
> >
> >
> >> Hey,
> >>
> >> We discovered a very odd problem with our PIC18LF2520's. When you
> >> approach the PIC it reboots. With some experimentation we found that
> >> it's because of sensitivity to static electricity. In other words
> >> grounding onself it doesn't happen, and deliberate charging causes the
> >> PIC to reboot at physically further distances depending on the amount of
> >> charge you're carrying.
> >>
> >> This is bad.
> >>
> >
> >
> > --
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> >
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