Working principle and application analysis of UART

This paper introduces UART and analyses its application. UART (Universal Asynchronous Transceiver) is used for serial communication and has a specific frame format, usually including start bit, data bit, check bit and stop bit. UART mainly includes three core components, namely transmitter, receiver and baud rate generator. In industrial production, UART chips are various. UART can be used in FPGA and MCU. The specific application fields involve military, medical, communication, industrial control and other fields. After years of development, UART technology tends to be mature, which has the advantages of low cost, stability and reliability, and it is not limited by load capacitors such as SPI. However, there is still much room for improvement. Compared with other serial ports, UART has low rate, cumbersome baud rate error setting, and unsatisfactory anti-interference capability, which may be the future research direction.