| 用8259A扩展8031单片机外部中断源的方法 |
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| 引用本文： | 米根锁,王瑞峰.用8259A扩展8031单片机外部中断源的方法[J].电气传动自动化,2006,28(6):55-57. |
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| 作者姓名： | 米根锁 王瑞峰 |
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| 作者单位： | 兰州交通大学,信息与电气工程学院,甘肃,兰州,730070 |
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| 摘 要： | MCS—51系列单片机能提供给用户自由用作不同用途而不是指定用途的外部中断源只有两个。在需要有多个外部中断的应用场合,需要给单片机扩展外部中断源。用8259A可编程中断控制器接口实现8031外部中断源扩展的方法看似简单,实则存在着一些需要认真考虑和解决的问题,本文讨论了这些问题以及具体的解决方法,给出了接口电路和相关源程序结构。
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| 关 键 词： | MCS—51系列单片机 8259A可编程中断控制器 外部中断源 扩展 |
| 文章编号： | 1005-7277(2006)06-0055-03 |
| 修稿时间： | 2006年11月10 |
The method of expanding exterior interrupt sources for 8031 SCM with 8259A |
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| MI Gen-suo,WANG Rui-feng.The method of expanding exterior interrupt sources for 8031 SCM with 8259A[J].Electrical Drive Automation,2006,28(6):55-57. |
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| Authors: | MI Gen-suo WANG Rui-feng |
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| Abstract: | The MCS-51 series SCMs offer only two exterior interrupts to the user for freely served as the different uses but are not the given use.In the application situation that needs to have many external interrupts,it is needed to expand the SCM's exterior interrupts.The method,to expand exterior interrupt sources for 8031 SCM with 8259A,looks simple,but in nature,it has some problems needed to be thank better of and resolved,these problems as well as the concrete solution are discussed,the interface and the related source program structure are provided. |
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| Keywords: | MCS-51 series SCM 8259A programmable interrupt controller exterior interrupt sources expand |
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