Hardware development notes (VIII): basic process of hardware development, making a USB to RS232 module (VII): creating a basic dip component (crystal oscillator) package and associating the principle

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Preface

   With the schematic diagram , Can design hardware PCB, In the design PCB There is also a coordinated priority action , Mapping encapsulation , The components of the schematic library are designed by us . In order to better describe the packaging design process , This article describes creating a crystal oscillator package （DIP）, Connect the components of the schematic diagram to the pin package .

Schematic packaging analysis

  

• Serial number 1：USB Port packaging , see datasheet establish
• Serial number 2：CON encapsulation , Use dip2.54,2dip
• Serial number 3：ASM1117-3.3V encapsulation , see datasheet establish
• Serial number 4：CON encapsulation , Use dip2.54,3dip
• Serial number 5： Capacitor package , choose 0603 establish
• Serial number 6：CH340G encapsulation , see datashee establish
• Serial number 7： Crystal oscillator package , see datasheet establish
• Serial number 8：MAX232 Component packaging , see datasheet establish
• Serial number 9：CON encapsulation , Use dip2.54,5dip

   above , Actually com There is a universal ,0603 These are also general standard packages .

Create crystal oscillator package

Package dimension drawing of crystal oscillator

  

  dip And patch , We chose dip Of .

establish Pad Pad （ circular , Outside diameter 1.5mm, The inner diameter 1.0mm）

   No need to create , General dip All are 0.6 Left and right , The previous ones can be used in general ：
  

Create component packaging

  
  
  
  
  
  
  
  
  
  
  

Schematic Association encapsulation

Step one ： Open the schematic project

  
  

Step two ： Double click the component to add the package

  
  

Last one ：《 Hardware development notes （ 7、 ... and ）: Basic process of hardware development , To make a USB turn RS232 Module （ 6、 ... and ）： establish 0603 Encapsulate and associate principle primitive devices 》
Next ： Coming soon …

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