pic microcontroller discussion list wrote:
> I pull up the MCLR line with a 10K resistor and don't use any diode.
> My answer to picky circuits that take too much power was to make my
> programmer with a big huge beefy supply.

right. Like I said, it depends on the rest of the circuit. Note that
for some PICs, you really only need to connect PGC, PGD, and VPP.
The normal 5V supplied by the application circuit can supply Vdd.
It depends on the programming algorithm used by that chip. This
definitely will not work on the 12-series. But it does work on chips
like 16F87x. I use this technique, and I also often use just a 10K
pullup.

I guess this technique doesn't conform to microchips recommendations
for production (since it can only verify at one voltage), but it works
great for development. There's some debate whether multiple voltages
are really necessary for the flash parts, though.

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