LIN Bus Protocol – A Brief Overview
The Local Interconnect Network (LIN) is an embedded networking standard for connecting devices at a minimal cost, with most of its uses in the automotive industry. It is a single-wire serial network protocol that can enable up to 19.2 Kbit/s communications across a bus length of 40 metres. The demand for a low-cost serial network increased as the technologies and facilities incorporated in the automobile developed further. This was because the CAN bus was too expensive to construct for every component in the car. Automobile manufacturers began employing several serial communication protocols, which caused compatibility issues. In applications where the bandwidth and versatility of CAN are not required, LIN enables cost-effective communication. The common serial universal asynchronous receiver/transmitter (UART) included in most recent low-cost 8-bit microcontrollers can be used to implement LIN quite cheaply. LIN Bus Topology and Behavior The LIN Bus is a 16-node broadcast seri...