AVR-Chat

You may have problems in the software that runs immediately
after RESET. Try some software delay after RESET.

	Mark Jordan

On 2 Feb 2005 at 11:12, Javier Fiasche wrote:

> 
> Thanks, but i also tried with a 10k, 4.7k and 1 k pull ups, and even by connecting reset line 
> directly to VCC and any of that worked
> The problem seems to be other
> Thanks again
> Javier
> 
> -----Mensaje original-----
> De: Paul Maddox [mailto:P.Maddox@signal.qinetiq.com]
> Enviado el: Miércoles, 02 de Febrero de 2005 10:57 a.m.
> Para: AVR-Chat@yahoogroups.com
> Asunto: Re: [AVR-Chat] Bootup/reset very big problem
> 
> Javier,
> 
> > The thing comes when a tie an external
> > voltage source to the reset pin (ex. an ISP programmer). Everything
> > seems to work fine, even the reset circuitry, but as soon as i take
> > out this external reset source, the chip halts. I dont have a clue
> > about what this could be.
> 
> Try connecting a pull up resistor between the Reset pin and the 5V supply,
> that should do it.
> You can't leave this pin floating, it needs to be connected to a 'high' for
> it to work.
> If you plan to use the ISP sometimes then use a 10K resistor and all will be
> well.
> 
> Paul
> 
> 
> 
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