CAN总线具有配置灵活、应用范围广的特点,C8051f040单片机功能强大,集成了CAN总线控制器。本文提出了一种基于C8051f040的CAN总线系统智能节点的设计方案,给出了相应的硬件和软件设计,实际运行结果验证了设计的正确性,其通用性好、可靠性高,具有广泛的应用前景。 关键词:C8051f040;CAN总线;智能节点 Abstract: An international standard about CAN has been formed. The CAN bus is one of the most promising field bus. With development of the performance-price ratio and developing method for C8051f040,it has been used to all fields of our society. In this paper,a feasible solution is updated to implement a intelligent node design on the CAN bus with C8051f040. This paper also presents a hardware and software implementation of intelligent node. The operation proves the correctness of the design. The design has a good versatility, high reliability, good cost performance and it has a wide application prospect. Keywords: C8051f040; can bus; intelligent node