原理图设计规范(1)

原理图设计规范

目录

目录-------------------------------------------------------------------------------------------------------------2第1章硬件原理图设计规范--------------------------------------------------------------------------------------3

1.1目的-----------------------------------------------------------------------------------------------------------3

1.2基本原则-----------------------------------------------------------------------------------------------------3

1.2.1原理图设计前的方案确定和基本原则-------------------------------------------------------3

1.2.2确定核心CPU-------------------------------------------------------------------------------------3

1.2.3参考成功案例--------------------------------------------------------------------------------------3

1.2.4对外围器件选型-----------------------------------------------------------------------------------4

1.2.5设计外围电路--------------------------------------------------------------------------------------4

1.3版面设计-----------------------------------------------------------------------------------------------------5

1.3.1图幅--------------------------------------------------------------------------------------------------5

1.4元件符号及参数设置标准-------------------------------------------------------------------------------6

1.4.1常用元件位号命名规则--------------------------------------------------------------------------6

1.5元件符号-----------------------------------------------------------------------------------------------------6

1.5.1电阻参数描述--------------------------------------------------------------------------------------6

1.5.2电容参数描述--------------------------------------------------------------------------------------8

1.5.3电感、磁珠参数描述-----------------------------------------------------------------------------9

1.5.4二极管---------------------------------------------------------------------------------------------10

1.5.5三极管及场效应管------------------------------------------------------------------------------10

1.5.6其它器件------------------------------------------------------------------------------------------10

1.6元件选择---------------------------------------------------------------------------------------------------10

1.6.1元件库选取---------------------------------------------------------------------------------------10

1.6.2元件放置要点------------------------------------------------------------------------------------12

1.7多张原理图------------------------------------------------------------------------------------------------13

1.8版面布局---------------------------------------------------------------------------------------------------13

1.8.1网络标号命名------------------------------------------------------------------------------------16

1.8.2总线式原理图画法------------------------------------------------------------------------------17

1.8.3CPU画法标准------------------------------------------------------------------------------------17

1.8.4其他------------------------------------------------------------------------------------------------18

1.9注意---------------------------------------------------------------------------------------------------------19

1.10复杂电路设计技巧-------------------------------------------------------------------------------------20

1.11原理图检查-----------------------------------------------------------------------------------------------21

1、原理检查：-------------------------------------------------------------------------------------------21

2、BOM检查：-----------------------------------------------------------------------------------------21

1.12原理图评审：---------------------------------------------------------------------------------------------21