LIN bus protocol, also local interconnect network, was developed as a complementary bus standard to the Controller Area Network (CAN bus) to address the need for a cost-efficient network for lower performance devices within the vehicle. Read more: [ Ссылка ]
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▬ LIN bus for low performance vehicles▬▬▬▬▬▬▬▬▬▬▬▬
While the CAN network was already in place within vehicles, its high bandwidth and advanced error detection capabilities were overkill (and thus, cost-prohibitive) for lower performance applications such as seat and window controllers. Today’s vehicles use a combination of CAN for powertrain and body communications, LIN for low-cost applications such as body electronics, and FlexRay for high-speed synchronized data communication.
▬ LIN protocol advantages▬▬▬▬▬▬▬▬▬▬▬▬
LIN bus protocol offers several advantages for automotive and industrial use cases. It is particularly useful in complementing the CAN bus by offloading devices where speed and fault tolerances are not critical.
- Lower Cost – LIN’s single-wire implantation, lack of licensing fees and cheaper nodes make it a significantly lower cost bus than CAN overall.
- Commodity Components – The number of automotive nodes has increased from 200 million in 2010 to 700 million today. The advantage of cheaper, smaller, more readily available components for LIN follower nodes cannot be understated.
- Deterministic – Because the leader node delegates pre-determined frame slots on the LIN bus, message frames are predictable, and collisions should not be introduced.
- Self-synchronization – The sync field within a LIN frame allows follower nodes to always stay in sync with the leader, eliminating the need for external oscillators.
- EMI Mitigation – The 20 kbit/s maximum data rate and 40m maximum line length help diminish Electromagnetic Interference (EMI).
- Low-power Mode – Utilization of the Sleep mode is favorable when only sporadic events occur (ie button press) and the bus is not used otherwise.
▬ NXP LIN solutions▬▬▬▬▬▬▬▬▬▬▬▬
LIN’s simplicity and low cost make it an attractive option for automotive subsystems where speed and bandwidth are not the primary concerns. Today’s vehicles contain multiple LIN clusters to control these subsystems and interface with the vehicle’s CAN network via the LIN leaders. As the world’s largest provider of automotive semiconductors, NXP provides multiple CAN and LIN solutions including MCUs and processors with integrated CAN/LIN controllers, CAN and LIN transceivers, LIN bridge chips, System Basis Chips and development tools and software that support all of these
▬ About NXP▬▬▬▬▬▬▬▬▬▬▬▬
NXP Semiconductors N.V. enables secure connections for a smarter world, advancing solutions that make lives easier, better, and safer. As the world leader in secure connectivity solutions for embedded applications, NXP is driving innovation in the automotive, industrial & IoT, mobile, and communication infrastructure markets.
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