Submitted by: TechTools
Download Link:

This application note covers transmission of asynchronous serial data using PICmicro®
microcontrollers. It presents an example program in TechTools assembly language
that transmits a text string serially via RS-232 at speeds up to 19,200 bits per
second. Hardware examples demonstrate the use of a popular serial line driver, as
well as a method for using the PICmicro® MCU's output to directly drive a serial
line.