Journal of the Institute of Electronics Engineers of Korea SC (전자공학회논문지SC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Study on the Method of Giving Hysteresis Characteristics to the Digital input port of Microprocessors

마이크로프로세서 디지털 입력포트에 대한 히스테리시스 특성 부여방법에 관한 연구

  • Lee, Hyun-Chang (Dept. of Information and Telecommunication Engineering, Kongju National University)
  • 이현창 (국립 공주대학교 정보통신공학부)
  • Received : 2009.09.08
  • Accepted : 2011.03.10
  • Published : 2011.03.25
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Abstract

This paper presents the method of giving hysteresis characteristics to the digital input port of microprocessors or micro-controllers and it's design procedures. And this paper shows the example of circuit design and the effect of this method by experiments. Presented method has advantages : By the additional one port and two resistors, input port can have hysteresis characteristics and hysteresis band is larger than TTL, CMOS schmitt trigger gates.

본 논문에서는 마이크로프로세서의 디지털 입력포트에 히스테리시스 특성을 부여하는 방법 및 설계 순서를 제시하고 이를 실험해 그 효과를 확인하였다. 프로세서의 잉여포트가 있을 때 제시한 방법을 이용하면 저항 2개의 추가만으로 히스테리시스 특성을 얻을 수 있으며, 더구나 기존의 TTL과 CMOS의 슈미트 트리거 게이트에 비해 큰 히스테리시스 폭을 얻을 수 있다.

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References

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