Matthew Mucker wrote:
> Greetings fellow hobbyists!
>
> I'm returning to the world of PICs after an absence of a few years.  While
> much has stayed the same I've found a few things that have changed.
>
> In particular, the 'F84 seems to have yielded to the 16F628 chip.  I've
> bought a few of these chips and have dusted off the old P16Pro programmer.
> >From my reading, some people seem to be suggesting that pin 10 of the PIC
> must be tied to ground to disable LVP on this device, so that I don't fry my
> part with high voltage programming.
>
> I've read the product's datasheet, and my interpretation of section 14.13 of
> the datasheet is that this isn't necessary.
>
> So I'm asking the community: do I have to ground pin 10 of the part during
> programming if I'm not using low voltage programming?
>
> Thanks,
>
> -Matthew
>
>   
You must force the LVP pin to GND while programming using high-voltage 
mode, yes. But a 10K
resistor to GND will suffice.The LVP concept was  ill-conceived, and is 
rarely supported by anyone,
even by Microchip, and the less the documentation discusses it, the 
better for them.

Since 99% of all my designs are ICSP, I simply include the 10K resistor 
to GND, and whenever possible,
force that pin to always be an OUTPUT.

--Bob
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