> It (Wisp628) appears to short VCC for a few milliseconds while VPP
stays high.
>
> I wondered if that could be accomplished by VPP before VCC powerup
> sequence instead, but no mention of this MCLR case at all in the
> programming spec.

This *is* a Vpp before Vcc sequence. Wisp628 derives Vpp from Vcc, this
is the most convenient way to do this.

Wouter van Ooijen

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