C8051F330单片机最小系统设计.doc

摘 要 随着现代电子技术的发展，各种处理器在现代机械及电子测量领域中应用相当广泛。单片机系统以其功能面广，扩展方式多等优点应用在多个领域。单片机最小系统又是研究单片机相关设计的基础，因此对单片机最小系统的研究和设计具有广泛的现实意义。 本文以C8051F330为研究对象，设计一个具有串口通信，D/A转换，A/D转换等功能的最小系统。然后运用Keil C51软件，对每个功能进行验证。通过3.3V供电的低功耗增强型SOC单片机C8051F330和串口驱动芯片MAX3232相互配合，结合单片机的片上外设D/A，在载入验证程序后，能够在示波器上显示数/模转换的正弦和方波。并且实现了与计算机串口通信进行数据的接收和发送。经过软硬件结合调试证明本次设计的系统是合理可行的。 本文主要分以下几章进行论述。第一章是原理及相关设计工具介绍；第二章是系统的硬件设计；第三章是系统的软件设计部分；第四章是系统调试与分析部分；第五章是结论与展望。 关键词：最小系统，C8051F330, MAX3232 ABSTRACT With the development of modern electronic technology, all kinds of processors application is quite widespread in the modern machinery and in the electronic surveying domain. The monolithic integrated circuit （SCM）system is also used in many domains, so the research and design of SCM system is very important. The SCM systems function surface is broad, and the expansion mode are many, and the SCM minimum system is the basis of the relevant design about SCM, so the study of this issue has the practical significance In this paper,It takes C8051F330 as the object of study， designs a minimum system including the hardware such as a C8051F330, serial, D / A, A / D，and so on. At the same time,it verifies the confirmation to each function using the Keil C51 software. 3.3V power supply of low-power enhanced SOC SCM C8051F330 and the serial microcontroller drive chip MAX3232 coordinate with each other, and then combine the on-chip D/A of the microcontroller peripherals, after writing down the proving program, it can show the sine and square by the oscilloscope after D/A conversion. System also achieve the communications functions of receiving and sending data with a computer serial port. After the final combination of hardware and software debugging it proved that the design is reasonable and feasible. This paper is divided into the following chapters to discussed. Chapter 1 is the first principle and related design tools introduced; Chapter 2 is the hardware design; Chapter 3 is the system software design; Chapter 4 is the system