《毕业论文：单片机系统电路的PCB设计》.doc

兰州交通大学毕业设计（论文） PAGE   PAGE \* MERGEFORMAT III 摘 要 单片机最小系统，无论对单片机初学人员还是开发人员都具有十分重要的意义，初学人员可以利用最小系统逐渐了解单片机的设计原理与功能，开发人员可以进行编程实现工业控制。单片机最小系统电路板在单片机开发市场和大学生电子设计方面十分流行，设计单片机最小系统电路板，能够让设计者迅速掌握单片机应用的技术特点与实际要求。 印制电路板技术正在飞速发展，在各个领域得到了广泛应用。本次设计以此为出发点，结合单片机最小系统的基本原理，以STC89C51为核心，在Protel 99SE平台下从对电路进行设计，并在Protel 99 SE平台下对单片机最小系统进行了详细的原理图设计以及PCB设计。首先根据电路原理从AD、DA、复位、晶振几个模块对电路进行设计，最后综合所有模块进行PCB设计，并介绍了PCB设计的参数设置，布线规则。利用PROTEL电路设计软件进行原理图设计，PCB布线，借此巩固单片机应用、模拟电路、数字电路课程及学会工程软件PROTEL的使用。 关键字：PROTEL 99SE；印制电路板；最小系统；STC89C51 Abstract MCU minimum system, it’s of great significance for both MCU beginner or developer. Beginners can take advantage of getting to know the minimum system design principles and function of MCU，developers can use minimum system to program for industrial control. MCU minimum system board are very popular in the MCU develop market and college students electronic design. Design of MCU, allowing designers to quickly grasp the technical characteristics of MCU application and the actual requirements. Printed circuit board technology is developing by leaps and bounds, it has got the extensive application in various fields. This design set it as a starting point, combining the basic principles of MCU minimum system, to the core of STC89C51, we design the circuit In Protel 99SE platform, meanwhile we give the circuit a detailed schematic design and PCB design In Protel 99SE platform. First, we design the circuit from the AD, DA, reset, crystal oscillator of several modules under the circuit principles, finally we synthesize all the modules for PCB design, and we simply introduce the parameter settings, routing rules. Using Protel software to design schematic circuit diagram, PCB routing, we can consolidate the MCU applications, analog circuits, digital circuits course and learn to use engineering software PROTEL. Key words: printed circuit board ;PROTEL 99SE; minimum system;STC89C51 目 录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc264482288 1. 绪论  PAGEREF _Toc2