Jan-Erik Soderholm wrote:
> And (still if I've understood correctly), this is
> not a problem if the programmer keeps the MCLR
> pin at Vpp over the whole erase to fuse re-programming
> cycle (?).

Yes, if it can.  Note that Vpp is often required to go to 0 between some
operations, like bulk erase and programming data.

> And also that a pulldown on the PGM pin will
> always protect against this scenario ?

Yes.

> On a local Swedish electronics forum, there was a
> statement today saying that failing to handle the PGM
> pin correctly can brake a 16F628A.

Maybe, but I would need to see solid evidence for me to believe that.


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