Wouldn't a cap be a voltage source, not current?

                                                Jim.
----- Original Message -----
From: wouter van ooijen & floortje hanneman <wf@XS4ALL.NL>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, February 05, 2002 7:46 AM
Subject: Re: [PIC]:16f84 Question


> > > > Yes, but you risk damage to the chip if you ground it directly
>
> > I think you may have misunderstood "ground it directly". Not tied
> > to ground (although why would you want to have the PIC in
> > permanent reset, but maybe it's my turn to misunderstand),
>
> OK, I still can't read 'ground it directly' different from 'tied to
ground'
> but that might be my problem. Tying MCLR either to ground or Vcc is OK,
but
> to a current source independent from Vcc (such as a cap) is definitely
bad.
>
> And why would anyone tie /MCLR to ground directly? Well, I do that with a
> reset switch... When I want a really form reset (of both the PIC and maybe
a
> HD44780 which does not have a reset input) I tie Vcc to Gnd! With an 7805
> that is not a big problem and it cures even a brownout-problem.
>
> Wouter van Ooijen
>
> Van Ooijen Technische Informatica: http://www.voti.nl
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>
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