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改善微控制器应用的瞬态抗扰性能.
资料介绍
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。
部分文件列表
| 文件名 | 大小 |
| 改善微控制器应用的瞬态抗扰性能.pdf | 1M |
部分页面预览
（完整内容请下载后查看）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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