> -----Original Message-----
> From: Dan Michaels [SMTP:oricom@USWEST.NET]
> Sent: Friday, September 29, 2000 5:46 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Re: [PIC]: ICSP
>
> Andy Howard wrote:
> > .........
> >Thanks for that Dan, the Vpp/Vcc interaction looks like a classic gotcha.
> >I'll certainly look out for that one.
> >In the Mchip documents they suggest fitting a Schottky diode between the
> R-C
> >junction and the MCLR/Vpp pin to isolate the capacitor and resistor.
> >
>
>
> On the diagram that comes with the EPIC programmer, they show
> Vpp straight thru to /MCLR, which has a 10K pullup R to Vcc
> with a 1N4148 diode in series [pointing at the /MCLR pin,
> of course]. For normal ops, this would put a little under
> 5v on /MCLR. I haven't tried it, but imagine they did.
>
> - dan michaels
>
We have incorporated this on a product in development and it works just
fine.  The our ICSP socket can be used for either programming or for the
ICD, very usefull.

Mike

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