AVR-Chat

As Larry remarked, caps (for noise immunity) don't do much on the newer 
chips. The 4.7uf just seemed very large to me.

  Time to check power supply, & as always, check fuses.

-carl


At 01:02 PM 10/23/2004, you wrote:


>         I was using 100nF and tried 4.7uF. No luck. Same behavior.
>
>         Mark
>
>On 23 Oct 2004 at 13:43, Henry Carl Ott wrote:
>
> >
> > That 4.7 uf cap seems a little large to me.
> >   I don't know if there is a maximum rise time on the reset signal, but
> > something in the .01 range might be more appropriate.
> >
> > -carl
> >
> >
> > At 12:25 PM 10/23/2004, you wrote:
> >
> >
> > >         Hi,
> > >
> > >         I'm having a weird problem with a Mega8 running on the
> > >internal clock oscilator at 1 MHz. The internal Power-on Reset
> > >seems not to be working.
> > >         Every time I power up the circuit, I have to manually reset
> > >the Mega8. The power at the Vcc pin rises from 0 to +5V in 4mS.
> > >The RESET pin has a 22k to +5V and 4.7uF to GND.
> > >         Have tried several fuses combinations but no luck.
> > >         Am I missing something?
> > >
> > >         Thanks.
> > >         Mark Jordan
> > >
> > >
> > >
> > >
> > >
> > >Yahoo! Groups Links
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> > Yahoo! Groups Links
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