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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
2022-07-07 04:08:00 【Changsha red fat QT】
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This article blog address :https://hpzwl.blog.csdn.net/article/details/125370470
Hardware related development
Last one :《 Hardware development notes ( Nine ): Basic process of hardware development , To make a USB turn RS232 Module ( 8、 ... and ): establish asm1117-3.3V Package library and associate principle element devices 》
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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 CH340G and MAX232 Chip package creation (SOP-16), And the components of the schematic diagram are associated with the pin package .
Schematic packaging analysis
- 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 .
establish CH340G encapsulation
CH340G Package size
establish Pad Pad ( Rectangle ,SMT Patch pad , Common pins )
establish Pad Pad ( Rectangle with rounded corners ,SMT Patch pad , First pin )
Continue to new :
establish SOP-16 encapsulation
Schematic Association encapsulation
Step one : Open the schematic project
Step two : Double click the component to add the package
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 .
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 .
Schematic Association encapsulation
Step one : Open the schematic project
Step two : Double click the component to add the package
Last one :《 Hardware development notes ( Nine ): Basic process of hardware development , To make a USB turn RS232 Module ( 8、 ... and ): establish asm1117-3.3V Package library and associate principle element devices 》
Next : Coming soon …
If the article is original , Reprint please indicate the source of the original
This article blog address :https://hpzwl.blog.csdn.net/article/details/125370470
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