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Hardware development notes (10): basic process of hardware development, making a USB to RS232 module (9): create ch340g/max232 package library sop-16 and associate principle primitive devices

2022-07-06 20:42:00 【51CTO】

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 CH340G and MAX232 Chip package creation （SOP-16）, And the components of the schematic diagram are associated with the pin package .

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Schematic packaging analysis

   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram

  • Serial number 1：USB Port packaging , see datasheet establish
  • Serial number 2：COM encapsulation , Use dip2.54,2dip
  • Serial number 3：ASM1117-3.3V encapsulation , see datasheet establish
  • Serial number 4：COM 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 .

<br>

establish CH340G encapsulation

CH340G Package size

   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _02
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _03
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _04

establish Pad Pad （ Rectangle ,SMT Patch pad , Common pins ）

   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _05
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _06
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _07
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _08

establish Pad Pad （ Rectangle with rounded corners ,SMT Patch pad , First pin ）

   Continue to new ：
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _09
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _10
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _11

establish SOP-16 encapsulation

   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _12
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _13
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _14
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _15
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _16
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _17
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _18
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _19
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _20
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _21

<br>

Schematic Association encapsulation

Step one ： Open the schematic project

   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _22
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _23

Step two ： Double click the component to add the package

   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _24
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _25

<br>

establish MAX232 encapsulation

MAX232 encapsulation

  Max232 Two kinds of , A kind of dip, A kind of so, Found in CH340G Of sop-16 It's the same .
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Schematic diagram _26

establish SOP-16 encapsulation

  SOP-16 Encapsulated with the previous CH340G It's the same , So we are not creating here , Just use it directly .

<br>

Schematic Association encapsulation

Step one ： Open the schematic project

   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _27
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _28

Step two ： Double click the component to add the package

   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ Insert a picture _29
   Hardware development notes （ Ten ）: Basic process of hardware development , To make a USB turn RS232 Module （ Nine ）： establish CH340G/MAX232 Packaging Library sop-16 And associate principle graphic devices _ encapsulation _30

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