This Project demonstrates how to use UART in ARM Cortex-M3 LPC1768. In this project we are doing serial communication between PC and LPC1768 Board using MAX232. We are using 9600 baud rate for serial communication. Here data will be sent by PC (Teraterm) and on the other end we are receiving data in LPC1768 Microcontroller Board. Data received in microcontroller now will be sent back again to PC to show on terminal.