飞思卡尔的PCB布局布线应用笔记

飞思卡尔的PCB布局布线应用笔记1Freescale Semiconductor

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System Design and Layout Techniques for Noise Reduction in MCU-Based Systems
By Mark Glenewinkel CSIC Applications Austin, Texas

Freescale Semiconductor, Inc...

INTRODUCTION
As the high technology eld advances, so do the problems from electromagnetic interference (EMI). EMI issues are increasingly problematic for the system designer as semiconductors in general become faster, more integrated, and, unfortunately, noisier. Engineers who design layouts with little regard for EMI issues are nding that their designs are not performing to specication or are not working at all. However, most EMI issues can be avoided in advance by using an appropriate system design approach coupled with proper printed circuit board (PCB) layout te