C8051F系列微控制器UART电路设计

摘要

介绍C8051F系列UART的功能结构和传输数据帧的格式,通过其操作模式和两种典型的通信方式,详细分析UART内部特殊功能寄存器的功能和使用方法,阐述发送部分和接收部分电路设计过程,通过特定程序对内部特殊功能寄存器的标志位,发送、接收端口时序以及多机通信过程进行仿真,并给出仿真波形图.%The function of UART and the Data For mat in C8051F MCU family are presented . The operation and the two typical communications are analyzed. The function and use of SFRs are analyzed detailedly. The design process of Transmit and Receive circuit are provided. The state of SFRs is simulated. The timing of TX0 and RX0 are simulated. Multiprocessor communications process is simulated.Simulation waveforms are provided.