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改善微控制器应用的瞬态抗扰性能.

更新时间：2019-10-14 13:36:51 大小：1M 上传用户：asimo2010查看TA发布的资源 标签：微控制器 下载积分：2分 评价赚积分 （如何评价?） 打赏 收藏 评论(0) 举报

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本应用说明讨论了瞬态电干扰对嵌入式微控制器（MCU）的影响，并提出了实用的硬件和软件设计技术，可为电快速瞬变（EFT）、静电放电（ESD）提供经济有效的保护。以及其他短时间的电源线或信号线瞬变。虽然本讨论针对的是电器制造商，但这些原则也适用于消费电子、工业电子和汽车电子的应用。

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改善微控制器应用的瞬态抗扰性能.pdf 1M

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AN2764  
Rev. 0, 06/2005  
Freescale Semiconductor  
Application Note  
Improving the Transient Immunity  
Performance of  
Microcontroller-Based Applications  
by: Ross Carlton, Greg Racino, John Suchyta  
Freescale Semiconductor, Inc.  
Introduction  
Increased competition among appliance manufacturers, as well as market regulatory pressures, are  
challenging original equipment manufacturers (OEMs) to reduce the cost of their products while ensuring  
compatible operation in increasingly severe electro-magnetic environments. As a result of this focus on  
cost control, implementing the necessary transient immunity protections to prevent appliance malfunction  
due to transients on power and signal lines is becoming ever more challenging for the appliance designer.  
Because traditional power supply designs and electro-magnetic interference (EMI) controls are sacrificed  
for lower-cost solutions, the appliance designer must develop new techniques to meet applicable  
regulatory electro-magnetic compatibility (EMC) requirements.  
This application note discusses the effects of transient electrical disturbances on embedded  
microcontrollers (MCUs) and suggests practical hardware and software design techniques that can  
provide cost-effective protection for electrical fast transients (EFT), electrostatic discharge (ESD), and  
other power line or signal line transients of short duration. Although this discussion is targeted at  
appliance manufacturers, these principles also apply to applications in consumer, industrial, and  
automotive electronics.  
© Freescale Semiconductor, Inc., 2005. All rights reserved.  

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