PIC target circuit elements

Here are various schematics for components of a target circuit.



A reset circuit is useful but can be done automatically by the internal circuitry. Enable this with the programmer.




Leds can be connected directly to port B as the specs allow this. Remember current limiting resistors though. RTCC is an interrupt line and must be pulled high if you enable it. On the 16C84, interrupts can be generated by activity on the top four bits of port B.

A good debugging tool is an intelligent LCD display. More.