CAN总线上的智能节点是网络上报文的接收和发送站，一般由单片机和可编程的CAN通信控制器组成。本文介绍了一种新型的独立CAN 通信控制器MCP2515；给出其在CAN总线系统智能节点中的一个应用实例，硬件设计给出了节点的电路原理图，软件设计给出了系统程序的设计流程图，并对其作了简要的说明。关键词： CAN 总线；CAN 控制器；MCP2515；智能节点Abstract: The smart node on CAN field-bus is the transmit or receive station of messages. It ismainly combined with micro-controller and programmable CAN controller. The paper introduces an new type of stand-alone CAN controller－MCP2515, and presents an application in smart CAN node in which the schematic circuit diagram of node and flowchart of program have been presented as well as simple illumination.Keywords: CAN field-bus; CAN controller; MCP2515; smart node