> I don't remember exactly which chip it was, but I do remember that the
> Vpp/Vdd order mattered for it.  One of the symptoms was that
> the ID word
> would sometimes come back all zero.  I experimented enough to
> see positive
> evidence that the Vpp/Vdd order can be important.

Do you recall whether this applied to a flash or EPROM/OTP PIC?

Wouter van Ooijen

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