单片机系统可靠性技术及发展

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单片机系统可靠性技术及发展
清华 Motorola 单片机应用开发研究中心  北京 100084
本文介绍近年来单片机技术在提供系统可靠性方面所做的努力与发展。提醒用户在单片机选型、单片机应用系统设计以及制造工艺等方面应注意什么，以实现高可靠性的单片机应用系统。
随着半导体技术的飞速发展，单片机本身的设计中不断采用了一些新的抗干扰技术，使单片机的可靠性不断提高。除选择抗干扰能力强的单片机外，单片机系统中其它辅助元器件的可靠性也至关重要，一些抑制干扰的元器件的使用有助于提高系统的可靠性。此外，单片机系统在电路设计、印制电路板的设计、布线与制造工艺、系统安装时有无良好的接地等，都直接影响应用系统的可靠性。 单片机自身的抗干扰措施 为提高单片机本身的可靠性。近年来单片机的制造商在单片机设计上采取了一系列措施以期提高可靠性。这些技术主要体现在以下几方面。1、降低外时钟频率 外时钟是高频的噪声源，除能引起对本应用系统的干扰之外，还可能产生对外界的干扰，

Systematic dependability technology and development of singlechip
This text introduces one- chip computer efforts and development that technology makes in offering the dependability of the system in recent years. Remind user in singlechip person who select, singlechip application system design and manufacturing engineering, etc. respect should notice anything, In order to realize the application system of singlechip of high dependability. 
With semiconductor development at full speed of technology, singlechip own design adopts some new anti-interference technology constantly; Make the dependability of the singlechip raise constantly. Besides choosing the ability strong singlechip of anti-interference, singlechip system other supplementary components and parts have more essential dependabilities too, some suppressed use of components and parts that interfere contribute to improving systematic dependability. In addition singlechip system good earthy one when circuit design, printed circuit design, wiring, manufacturing engineering and system installation of board, Influences the dependability of the application system directly. The Single chip’s own

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