> I'm going by the ref manual for the 16F872.  I just downloaded/checked
> the doc you mentioned.  It covers the 16F87XA (rather than 16F87X)
> and also does not cover the 872.
>
> I haven't read this doc cause I'm not using those chips -- how does this
> 'A' version of the chip differ from its non-'A' counterparts?

1. not available yet (DigiKey shows 0 in stock)
2. comparator and voltage reference like 16f62x
3. algorithm for flash-code write is quite different (and the description is
up to the highly acclaimed microchip standard for confusion!)
4. new (additional) way to program (LVP or HVP), looks like 5* faster

Wouter van Ooijen
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