Universal Synchronous Asynchronous Receiver; Transmitter (Usart); Usart Introduction - ST STM32F446 Series Reference Manual

Universal synchronous asynchronous receiver transmitter (USART)
25

Universal synchronous asynchronous receiver

transmitter (USART)

25.1

USART introduction

The universal synchronous asynchronous receiver transmitter (USART) offers a flexible
means of full-duplex data exchange with external equipment requiring an industry standard
NRZ asynchronous serial data format. The USART offers a very wide range of baud rates
using a fractional baud rate generator.
It supports synchronous one-way communication and half-duplex single wire
communication. It also supports the LIN (local interconnection network), Smartcard Protocol
and IrDA (infrared data association) SIR ENDEC specifications, and modem operations
(CTS/RTS). It allows multiprocessor communication.
High speed data communication is possible by using the DMA for multibuffer configuration.
794/1328 RM0390 Rev 4
RM0390