Hello all,

            I'm currently working on a project that's using a PIC16F872
as its heart and soul, but I'm finding I'm quickly running out of
program space. I was looking for an as-close-to-entirely compatible part
with more program space. I was looking at the PIC16F873/ PIC16F873A but
was wondering what the main differences are. From what I can tell from
the specs these are the differences:

PIC16F872 to PIC16F873:
Increase of program flash; 4k from 2k
USART (which I want as well)
That's all I noticed

PIC16F873 to PIC16F873A:
Addition of 2 comparators

Am I missing anything major here? I would like to retain as close to
100% code compatibility, minus the USART code of coarse.
Other then that, I require a 20MHZ clock, which both provide, and a
28-pin dip with pin-for-pin compatibility to a '872.

Thanks in advance,
Tim Thompson

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