> I guess this is a tricky question : I need to use Asynchronous serial comm > of the 16f877. When doing that, do the others pin (Rc0->Rc5) still available > for standart I/O functions ? The USART will only use the TX and RX pins in asynchronous mode. It does not effect any other pins. ***************************************************************** Olin Lathrop, embedded systems consultant in Devens Massachusetts (978) 772-3129, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.