Hi John,

I think the best way is not using these pins at all for any other activity
but if you can't avoid it probably a jumper is the best way to disconnect
the pins from the circuit during the programming. Sometimes a resistor would
do as well and I can imagine a tricky/difficult circuit that uses fet for
example and Vpp or Vdd from the ICSP connector controls the gate - but I've
never done this way and I am not as good as able to tell you how it can or
should be done <grin>.

Tamas



On 4/9/07, John Chung <kravnus@yahoo.com> wrote:
>
> Tamas,
>
>     What kind of isolation do you use for RB6 and RB7?
> I had a VERY long night trying to interface DS12887A
> when it shared the same programming pins.....
>
> John
>
>
>
> --- Tamas Rudnai <tamas.rudnai@gmail.com> wrote:
>
> > Hi,
> >
> > I still say that if you use that external pullop
> > with your MCLR you should
> > use the diode as well - same as in the "In Circuit
> > Serial Programming"
> > manual:
> >
> >
> http://ww1.microchip.com/downloads/en/DeviceDoc/31028a.pdf
> >
> > It's on the 3rd page... it's for the mid-range
> > family so don't look at other
> > pins just the MCLR :-)
> >
> > Also what I would try:
> >
> > - 100k resistor change to 33k or 22k
> > - put a 100nF decoupler in between Vdd and Vss close
> > to the chip
> >
> > It should work for sure, I'm using 10F202 with
> > PicKit2 - virtually I have no
> > any problem on programming it, touching wood.
> >
> > Tamas
> >
> >
> >
> >
> > On 4/9/07, Jinx <joecolquitt@clear.net.nz> wrote:
> > >
> > > One thing I've noticed, don't know if this is
> > relevant but it is unusual
> > > (in my set-up anyway)
> > >
> > > With every other MPLAB project I've got, the
> > Output window comes
> > > to the foreground during the build, then reverts
> > to the background. This
> > > 10F project doesn't do that, even though the build
> > is successful and code
> > > is produced. The project has not been set up
> > differently to any other
> > >
> > > I think I'll update MPLAB. Today is a lose-lose
> > day. Whatever I do is
> > > going to take time and be a gamble or perhaps
> > unnecessary. I told the
> > > customer I should have his prototype done in a few
> > hours, for a meeting
> > > ASAP this week. And that would have been the case
> > if the 10F had
> > > worked. But I don't want to make my problem his
> > problem, so I'll have
> > > to do an emergency port to a 12F. Not a big deal,
> > but the 10F is the
> > > part for the job and it grates to the same thing
> > twice
> > >
> > > And then be totally steamed if the 10F works with
> > a new MPLAB ;-)
> > >
> > > --
> > > http://www.piclist.com PIC/SX FAQ & list archive
> > > View/change your membership options at
> > > http://mailman.mit.edu/mailman/listinfo/piclist
> > >
> >
> >
> >
> > --
> > unPIC -- The PIC Disassembler
> > http://unpic.sourceforge.net
> > --
> > http://www.piclist.com PIC/SX FAQ & list archive
> > View/change your membership options at
> > http://mailman.mit.edu/mailman/listinfo/piclist
> >
>
>
>
>
>
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