| AT89S51单片机并行I／O端口的扩展 |
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| 引用本文： | 安晓莉.AT89S51单片机并行I／O端口的扩展[J].国外电子元器件,2009(8):66-67. |
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| 作者姓名： | 安晓莉 |
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| 作者单位： | 西安思源学院; |
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| 摘 要： | 研究AT89S51单片机并行I／O端口的扩展方法。以AT89S51为核心设计单片机最小系统。在此基础上以Intel8155为主要器件设计系统电路。给出硬件电路图和软件流程图，并讨论调试过程中出现的问题及解决方案。实验结果证明，扩展的I／O端口方便实用、成本低、具有可编程功能。达到设计目标。
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| 关 键 词： | AT89S51 扩展 Intel 8155 单片机最小系统 |
Expansion of AT89S51 MCU parallel I/O port |
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| AN Xiao-li.Expansion of AT89S51 MCU parallel I/O port[J].International Electronic Elements,2009(8):66-67. |
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| Authors: | AN Xiao-li |
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| Affiliation: | AN Xiao-li (Xi＇an Siyuan University, Xi＇ an 710038, China ) |
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| Abstract: | The expansion method of MCU parallel I/O port is researched.Using AT89S51 microcontroller as the core,the single-chip microcomputer minimum system is designed.Adopting Intel 8155 as the main chip,the design of control circuits are completed.System hardware circuit and the flowchart of procedure are given.Debugging problem and corresponding solution plan are discussed as well.The experimental results show that the extent I/O port is convenient,practical,lowcost,with programming function and the design target... |
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| Keywords: | AT89S51 expansion Intel 8155 single-chip microcomputer minimum system |
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