UART

UART - Universal Asynchronous Receiver/Transmitter

Quick Facts

What?

The UART is available in Energy Mode 0 and Energy Mode 1 and is capable of high-speed asynchronous serial communication.

Why?

Serial communication is frequently used in embedded systems and the UART allows efficient communication with a wide range of external devices.

How?

The UART has a wide selection of operating modes, frame formats and baud rates. The multi-processor mode allows the UART to remain idle when not addressed. Triple buffering and DMA support makes high data-rates possible with minimal CPU intervention and it is possible to transmit and receive large frames while the MCU remains in EM1.

Features

The Universal Asynchronous serial Receiver and Transmitter (UART) is a very flexible serial I/O module. It supports full- and half-duplex asynchronous UART communication.

Full duplex and half duplex
Separate TX/RX enable
Separate receive / transmit 2-level buffers, with additional separate shift registers
Programmable baud rate, generated as an fractional division from the peripheral clock
Standard and Fast mode bitrates
Multiple asynchronous modes
Configurable number of data- and stop bits
HW collision detection
Multi-processor mode
Separate interrupt vectors for receive and transmit interrupts
Loopback mode
PRS triggered transmissions
Full DMA support