16f887a

[menta]

Along the 16f877A circuits I saw, I didn't notice someone who connected an external ocs.

[mackrackit]

Here is a circuit and project;
http://rentron.com/PICX1.htm

The data sheet helps too

[menta]

Yea, the problem was an external osc.
I succeded to use a 8Mhz (also need to define that in the code), but for some reson 20Mhz doesn't work.

Thank,
Menta

[mackrackit]

Do you have the config set HS_OSC or something like that.