Waking PIC's Up From Sleep

PIC18 PORTB

This is often just an IRQ for pins RB7:4 not the whole port

UART RX

No this won't work!!!! The UART needs the osc to create its internal baud timer.  If you need to wake up on RX connect to the pin to an INT pin also, or for programamble peripheral pins you can often assign both UART RX and INT1 etc to the same RP# pin.

 

USEFUL?
We benefit hugely from resources on the web so we decided we should try and give back some of our knowledge and resources to the community by opening up many of our company’s internal notes and libraries through mini sites like this. We hope you find the site helpful.
Please feel free to comment if you can add help to this page or point out issues and solutions you have found, but please note that we do not provide support on this site. If you need help with a problem please use one of the many online forums.