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PCB设计中3W原则20H原则和五五原则都是什么

3W原则

在PCB设计中为了减少线间串扰,应保证线间距足够大,当线中心间距不少于3倍线宽时,则可保持大部分电场不互相干扰,这就是3W规则。3W原则是指多个高速信号线长距离走线的时候,其间距应该遵循3W原则,例如时钟线,差分线,视频、音频信号线,复位信号线及其他系统关键电路需要遵循3W原则,而并不是板上所有的布线都要强制符合3W原则。

 

满足3W

2021-11-08 01:30:02 下载 10 查看 4,762
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s3c2410_kernel2.4.18 mmc module 内核部分的详细代码

s3c2410_kernel2.4.18 mmc module 内核部分的详细代码
2013-12-27 03:50:08 下载 176 查看 1,051
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GPS Engine Module“HPM103H-6 GPS Receiver”的说明书

GPS Engine Module“HPM103H-6 GPS Receiver”的说明书,有需要的可以
2015-11-13 20:45:02 下载 97 查看 1,066
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Mod_python is an Apache module that embeds the Python interpreter within the server. With mod_python

Mod_python is an Apache module that embeds the Python interpreter within the server.
2016-01-25 10:26:01 下载 127 查看 1,126
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broad cast could send the message to all the user from the im server, which is one module of the ope

broad cast could send the message to all the user from the im server, which is one module of the openfire
2014-01-21 09:56:01 下载 116 查看 1,050
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The Unisoft software module GERBER CONNECTION (CNC-BRIDGE). GERBER CONNECTION has all the features o

The Unisoft software module GERBER CONNECTION (CNC-BRIDGE).
2014-01-21 08:54:01 下载 86 查看 1,075
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cypress的触摸按键模块介绍calibrating_capsense_with_the_csr_user_module___an2355_13.

cypress的触摸按键模块介绍calibrating_capsense_with_the_csr_user_module___an2355_13.
2016-08-15 00:14:01 下载 169 查看 1,097
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A Module-based Wireless Node (MW-Node) is a Node with wireless and mobile capabilities added by mean

A Module-based Wireless Node (MW-Node) is a Node with wireless and mobile capabilities added by means
2013-12-26 19:00:06 下载 46 查看 1,121
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This a Python 3 module that adds support for a MySQL database, written entirely in C. It s purpose i

This a Python 3 module that adds support for a MySQL database, written entirely in C.
2013-12-30 17:03:01 下载 194 查看 1,078
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SIM300DZ is the Hardware Description of Version 2.04 of the SIMCARD GSM Module. This datasheet corre

SIM300DZ is the Hardware Description of Version 2.04 of the SIMCARD GSM Module.
2017-04-23 20:01:02 下载 41 查看 1,068
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This program I use to tested serial com and AT Command for testing GPRS for SIM300 GSM module

This program I use to tested serial com and AT Command for testing GPRS for SIM300 GSM module
2014-11-07 09:00:05 下载 60 查看 1,057
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I2C Serial Data Interface Module for Silabs C8051F133

I2C Serial Data Interface Module for Silabs C8051F133
2014-10-11 18:30:53 下载 198 查看 1,071
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This module has been test

This module has been tested on the renesus develop board.EEPROM was programmed with temperature calibration
2017-09-01 20:36:02 下载 43 查看 1,100
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C++ IIR filter module hided behind interfaces, coefitients format compatible with matlab SOI matice

C++ IIR filter module hided behind interfaces, coefitients format compatible with matlab SOI matices
2017-09-11 20:33:02 下载 47 查看 1,072
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The ¸ GX401EM VXI module provides a powerful digital signal processing platform for efficient

The ¸ GX401EM VXI module provides a powerful digital signal processing platform for efficient RF
2017-09-27 20:16:01 下载 164 查看 1,147
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MH5000 -31开发板 MH5000 Module Development Kit Guide

MH5000 -31开发板 MH5000 Module Development Kit  Guide,MH5000 -31开发板硬件技术手册。

2022-05-12 08:30:01 下载 9 查看 9,967
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Serpent算法,想必搞相关行业的朋友看到压缩文件名字就知道是什么了!

Serpent算法,想必搞相关行业的朋友看到压缩文件名字就知道是什么了!
2013-12-19 02:34:05 下载 27 查看 1,117
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This module contains device-specific r

This module contains device-specific routines for the Exabyte EXB-8500 tape drive.
2013-12-23 20:56:21 下载 148 查看 1,118
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Here you have the Development Kit of SkyeTek Module M1. Contains a demo software and some interestin

Here you have the Development Kit of SkyeTek Module M1.
2013-12-30 06:10:01 下载 109 查看 1,060
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FatFs06.rar FatFs is a generic file system module to implement the FAT file system to small embedde

FatFs06.rar FatFs is a generic file system module to implement the FAT file system to small embedded
2016-11-17 10:01:01 下载 197 查看 1,127
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