
USART is also known as a Serial Communication Interface or SCI. The USART can be configured as a full-duplex asynchronous system that can be configured as a half-duplex synchronous system that can communicate with peripheral devices such as CRT terminals and personal computers, or it can be configured as a half-duplex synchronous system that can communicate with a peripheral device such as A/D or D/A integrated circuits, serial EEPROMs, etc.