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LIN Bus

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Last updated 11 months ago

LIN Bus is a low speed network that focuses on ulta low cost low speed (5-20 Kbits) applications. It is UART based and provides time deterministic messaging via .

The LIN Bus uses a master node to control all communications. Unlike any other protocol, the LIN protocol frame can be composed of data from two separate nodes. The LIN master node supplies the consisting of the Break, Sync field and ID. The is filled in by either the master node or slave node depending on the ID.

There are different including problems with break, sync field, checksum, timing and the unresponsive nodes.

is primarily cost. Time determinism is also a major advantage over CAN / CAN FD bus. LIN's relative slowness is the primary disadvantage.

LIN's advantage over CAN / CAN FD and FlexRay
Visit the LIN Consortium Website
LIN Frames
first half of the message
rest of the frame
errors that can occur on a LIN bus
The UART based LIN Frame is consists of a break, break sync, ID, Data bytes and checksum.