Design of CAN BUS Node Module Based on C8051F040

By analyzing the functions of CAN bus node module, this paper proposes design program of the module, presents the typical C8051F040 CAN bus network architecture and the structure of CAN controller, The function modules and design points in hardware circuit design and the procedures of CAN bus mode module in hardware circuit design are described. CAN bus node module application-level software on this chip is given. The proposed design of CAN bus node module is strong in functionality and efficient in performance, and is nowadays applied in industrial field measurement system.