| 80C51单片机定时误差的分析 |
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| 引用本文： | 翟流顺.80C51单片机定时误差的分析[J].临沧师范高等专科学校学报,2011(1). |
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| 作者姓名： | 翟流顺 |
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| 作者单位： | 临沧师范高等专科学校教育技术中心; |
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| 摘 要： | 随着80C51单片机在工业上的广泛应用,对定时精度的要求越来越高。但是由于指令周期考虑不全和硬件自身的原因易引起定时误差。从软硬件方面分析了误差原因,并针对误差不确定性的特点从指令执行周期、计数器初值、计数器当前值、适时开关中断四个方面给出了纠正方法。
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| 关 键 词： | 单片机 定时精度 误差 机器周期 |
Analysis on Time Error of Microcontroller 80C51 |
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| ZHAI Liushun.Analysis on Time Error of Microcontroller 80C51[J].Journal of Lincang Education College,2011(1). |
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| Authors: | ZHAI Liushun |
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| Institution: | ZHAI Liushun (Educational Technology Center of Lincang Teachers ' College,Lincang 677000 China) |
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| Abstract: | With its widespread use of 80C51 in industry,the demand for time accuracy of 80C51 is increasingly strict.Because instruction period is not completely considered and the hard ware is not perfect,it is easy to cause error.For the error is indefinite,this paper analyses the reasons that cause the error from software and hardware aspects,then provides correction methods from four aspects:instruction operation period,original counter digit,present counter digit and interruptiononandoffon time. |
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| Keywords: | SCMC Time accuracy Error Machine period |
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