Universal synchronous/asynchronous receiver transmitter (USART/UART) RM0453
1114/1450 RM0453 Rev 5
35 Universal synchronous/asynchronous receiver
transmitter (USART/UART)
This section describes the universal synchronous asynchronous receiver transmitter
(USART).
35.1 USART introduction
The USART offers a flexible means to perform Full-duplex data exchange with external
equipments requiring an industry standard NRZ asynchronous serial data format. A very
wide range of baud rates can be achieved through a fractional baud rate generator.
The USART supports both synchronous one-way and Half-duplex Single-wire
communications, as well as LIN (local interconnection network), Smartcard protocol, IrDA
(infrared data association) SIR ENDEC specifications, and Modem operations (CTS/RTS).
Multiprocessor communications are also supported.
High-speed data communications are possible by using the DMA (direct memory access)
for multibuffer configuration.
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