1 Introduction to Serial Communication Interfaces

The serial communication interface plays a key role in exchanging data between several microcontrollers and other devices in an embedded system. The exchange of data can be half-duplex or full-duplex, depending on the serial module specification. The data rate and connections of the serial module differ from each other. USART, I²C, SPI, LIN, and LON are the common serial modules used in embedded systems.