USART stands for Universal Synchronous/Asynchronous Receiver/Transmitter is a modern IC which comes with a [UART](https://stackoverflow.com/tags/uart/info) that can also communicate synchronously. A USART is usually an individual (or part of an) integrated circuit used for serial communications over a computer or peripheral device serial port. The tag usart can be used for programming related questions of any usart device.
A Universal Synchronous/Asynchronous Receiver/Transmitter, abbreviated USART, is a piece of computer hardware that translates data between parallel and serial forms. USARTs are commonly used in conjunction with communication standards such as EIA, RS-232, RS-422 or RS-485. The universal designation indicates that the data format and transmission speeds are configurable.
A USART is usually an individual (or part of an) integrated circuit used for serial communications over a computer or peripheral device serial port. USARTs are now commonly included in microcontrollers. A dual UART, or DUART, combines two UARTs into a single chip. Many modern ICs now come with a UART that can also communicate synchronously; these devices are called USARTs (Universal Synchronous/Asynchronous Receiver/Transmitter).
The tag usart can be used for questions related to programming of a usart device, please note that https://electronics.stackexchange.com/ is another stackexchange website from where you can get answers for electronics related problems. Questions on Stackoverflow should be programming related.
See also tag uart.
