Not sure about the "73" but on the 16F76 vs. 16F876 the MCLR circuit is
different. The 16F76 doesn't have the built-in noise filter like the 16F876
(and 16C76).

See the "PIC16C76/77 to PIC16F76/77 Migration Document" (DS33002A) for more
info on the difference.

Paul

>-----Original Message-----
>[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of llile@SALTONUSA.COM
>Sent: Monday, November 25, 2002 10:23 AM
>
>I use these chips interchangeably all the time.  I believe the 10-bit vs
>8-bit A/D modules were the only difference I had to worry about.
>
>
>-- Lawrence Lile

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