摘要随着现在嵌入式技术的持续高速发展，嵌入式系统因为其软件硬件可裁剪，适应应用系统对功能、可靠性、成本、体积、功耗等综合特性被广泛应用于各种带有数字接口的设备中。本课题的主要内容，是基于SEP3203嵌入式微处理器（内嵌ARM7TDMI处理器内核）与74HC959芯片的接口电路和驱动设计，旨在实现LED显示控制电路的设计。在硬件电路中完成以SEP3203为核心的馈电电路、复位电路以及用以装载程序的存储器扩展电路的设计，构成一满足课题需要的最小硬件系统，并在此基础上，完成LED显示控制接口电路的设计，最终利用相应软件程序进行编程，调试运行后的发出的AXD调试命令可让LED实现某种具体功能，如任意字符在LED数码管的显示，并能按照任意时间间隔进行滚动显示。64796

毕业论文关键词  嵌入式系统、 LED显示、 SEP3203处理器、 74HC959

毕业设计说明书（论文）外文摘要

Title    The LED display control circuit design based on   

           embedded system                                   

Abstract

With the continuous rapid development of embedded technology,the embedded system is widely used in the devices with digital interface due to its advantages in function, reliability, cost, volume and power consumption which adapt to the application system. First, the paper introduces the related basic knowledge, development processing and design methods for hardware and software of embedded system. The paper then describes the LED display & control circuit. Finally, The project focuses on taking SEP3203 as the core to build up a LED display control circuit and completing the chip driver.Completed with SEP3203 as the core of the feed circuit, reset circuit and  memory which is used for loader extension circuit design in hardware circuit, constitute the minimum hardware system, and on this basis, complete the design of control and interface circuit of LED display. At last, using the corresponding software program to debug and run the AXD debug command which allows LED to realize some specific functions, such as displaying any character in the LED digital display tube in any time interval.

Keywords  Embedded system, LED display, SEP3203 processor, 74HC959

 目   录  

1  绪论1

1.1 选题背景1

1.2 本课题发展前景2

2  嵌入式系统简介 3

2.1  嵌入式系统基础 3

    2.1.1 嵌入式系统定义3

    2.1.2 嵌入式系统组成架构3

    2.1.3 嵌入式系统特点4

    2.1.4 嵌入式系统应用5

    2.1.5 嵌入式系统的未来6

2.2  嵌入式系统的开发设计  7

    2.2.1 嵌入式系统的开发设计流程7

    2.2.2 嵌入式系统硬件设计8

    2.2.3 嵌入式系统软件设计10

    2.2.4 嵌入式系统设计要求 11

2.3 本章小结11

3 系统硬件基础 12

3.1 SEP3203处理器12

    3.1.1 SEP3203处理器简介12

    3.1.2 SEP3203处理器功能模块13

    3.1.3 SEP3203处理器优点13

3.2 74HC595芯片14

    3.2.1 74HC595芯片简介14

    3.2.2 74HC595芯片功能特点15

3.3 LED数码管16

    3.3.1 LED数码管简介16

    3.3.2 LED数码管特点17

3.4 GE01MB实验开发板简介18

3.5 本章小结19

4 系统设计20

4.1 系统硬件设计20