| 利用8259A扩展MCS-51系列单片机外部中断源 |
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| 引用本文： | 付占稳,刘建业. 利用8259A扩展MCS-51系列单片机外部中断源[J]. 河北工业科技, 2002, 19(1): 10-13,22 |
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| 作者姓名： | 付占稳 刘建业 |
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| 作者单位： | 河北科技大学电气信息学院,河北石家庄 050054 |
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| 摘 要： | MCS-51系列单片机对外部中断源 INT0 /INT1的响应不执行中断响应周期 ,也不能自动识别来自 82 59A扩展的中断源。因此 ,利用 82 59A扩展 MCS-51单片机外部中断源 ,因其自身特点的特殊性 ,需认真研究 82 59A与 MCS-51系列单片机的接口方法及中断管理方法
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| 关 键 词： | MCS-51系列单片机 8259A可编程中断控制器 接口 |
| 文章编号： | 1008-1534(2002)01-0010-04 |
Utilizing 8259A to Extend the External Interrupt Sources of Mcs-51 |
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| FU Zhan-wen,LIU Jian-ye. Utilizing 8259A to Extend the External Interrupt Sources of Mcs-51[J]. Hebei Journal of Industrial Science & Technology, 2002, 19(1): 10-13,22 |
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| Authors: | FU Zhan-wen LIU Jian-ye |
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| Abstract: | When responding to the external interrupt source INT 0/ INT 1,Mcs-51 doesn't carry out interrupt answer cycle,and is unable to distinguish voluntary interrupt sources that coming from 8259A.Therefore,when utilizing 8259A to extend the interrupt sources of Mcs-51,based on its specific characteristics,we must carefully study the way of the interface between Mcs-51 and 8259A,and the way to manage the interrupt sources of 8259A. |
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| Keywords: | MCS-51 microprocessor 8259A interface |
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