I bought several of the OTP parts of the 12C509.  I am using Picstart Plus,
with MPLAB-C 1.21.

Its a simple program that I have run on many different chips, but this one
just seems to sit there with no sign of pin change.

The issues (as I understand them)

        Set INTERNAL RC

        Set Internal Reset

       clear OPTION bit 5 and 6

        use the __TRIS macro to set bit 0 and 1 as outputs

       Whatelse is there?  I use the Pins a Output , but they never change.

        Is there something I need to know about this internal clock?  What is th
e
OSC Trim byte for?

        Thanks in advance

John Craft


John A. Craft                           (601)689-8100 Voice
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