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What is the function of a CAN controller?

1 Answers

LaJustin

07/29/25 7:45pm

CAN controller is responsible for receiving data sent by the microprocessor in the control unit, processing the data and transmitting it to the CAN transceiver. At the same time, the CAN controller also receives the data from the CAN transceiver, processes the data and transmits it to the microprocessor. Here are some relevant information: 1. The automotive CAN controller is manufactured on a programmable chip through the combination of logic circuits. This controller has an interface for connecting with single-chip microprocessors, and can be programmed by the microprocessor to set its working mode, control its working state, and perform data transmission or reception. 2. Automotive CAN controllers usually come in two types, both strictly complying with CAN specifications and international standards. Their characteristics are as follows: (1) Independent automotive CAN controller This type of CAN controller has relative independence and is very flexible to use. It generally appears in the form of a single-chip integrated circuit and can be combined with various types of single-chip microprocessors. (2) Combined automotive CAN controller This CAN controller is integrated with the microprocessor to form a microprocessor control component with a CAN control function interface. Using a combined CAN controller can simplify and compact the circuit, and the efficiency can also be improved accordingly.

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