> > Jinx,
> >
> > I noticed that you do not have a series resistor into the
> > MCLR pin when using a capacitor like Mchip suggests.
> > Not sure I actually understand their reasoning on this
> > anyway, any comments?
>
> I've never used a series R. My usual is 10k to 5V, 10n ceramic
> to 0V. If the circuit requires a manual reset, then a pushbutton
> switch + 100R is across the 10n
>
> Microchip say in the manual "series resistor of 100 to
> 1000 ohms to limit any current flowing into Mclr from
> external capacitor in the event of an Mclr breakdown
> due to ESD or EOS"
>
> I always assumed that if Mclr had broken down that was
> the end of the chip. Yes ? No ? If Mclr has fried, who knows
> what else has

Yeah, one of those useless paragraphs that intends to communicate
some important piece of information but doesn't. Maybe the cap can
discharge into MCLR when Vdd drops and cause some damage?
Who knows.

Brent Brown
Electronic Design Solutions
16 English Street
Hamilton, New Zealand
Ph/fax: +64 7 849 0069
Mobile/text: 025 334 069
eMail:  brent.brown@clear.net.nz

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