@mchp-mcc/scf-avr8-usart-v1 NPM

Universal Synchronous and Asynchronous Receiver and Transmitter (USART)

Overview

The Universal Synchronous and Asynchronous serial Receiver and Transmitter (USART) is a fast and flexible serial communication peripheral. The USART supports a number of different modes of operation that can accommodate multiple types of applications and communication devices. For example, the One-Wire Half-Duplex mode is useful when low pin count applications are desired. The communication is frame-based, and the frame format can be customized to support a wide range of standards.

The USART is buffered in both directions, enabling continued data transmission without any delay between frames. Separate interrupts for receive and transmit completion allow fully interrupt-driven communication. The transmitter consists of a single-write buffer, a Shift register, and control logic for different frame formats. The receiver consists of a two-level receive buffer and a Shift register. The status information of the received data is available for error checking. Data and clock recovery units ensure robust synchronization and noise filtering during asynchronous data reception.

Changelog

All notable changes to this project will be documented in this file.

10.3.1 - 2025-06-12

Bug Fixes

M8PD-15943 :- Incorrect IO assignment for UART2 in MCC melody pin grid view for AVR32SDxx

10.2.1 - 2024-11-29

Bug Fixes

M8PD-7338 :- AVR DB: Data Streamer does not work in interrupt mode
M8PD-5243 :- USART0 TXD uses two pins
M8PD-2635 :- IsTxDone will never return true in interrupt driven USART driver for AVR DB