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Add EFM8UB31F40G-A

KiCad Bot requested to merge github/fork/LeSpirou/EFM8UB31F40G into master

Created by: LeSpirou

Datasheet: https://www.silabs.com/documents/public/data-sheets/efm8ub3-datasheet.pdf

Added three MCU parts which did not exist in that library before. Three different symbols, completly symbol compatible within the shared commons which are the majority of pins. Checked pin numbers twice for each symbol. Added apropriate footprint filters. Associated compatible footprints from the standard libraries. The centered GND pad for the EFM8UB31F40G-A-QFN24 is 0.5mm greater in width and height (2.6x2.6mm instead of 2.55x2.5mm).

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All contributions to the kicad library must follow the KiCad library convention

Thanks for creating a pull request to contribute to the KiCad libraries! To speed up integration of your PR, please check the following items:

  • Provide a URL to a datasheet for the symbol(s) you are contributing
  • Provide a screenshot of the symbol(s) from the symbol editor with the pin types visible
  • Ensure that the associated footprints match the official footprint library
    • A new fitting footprint must be submitted if the library does not yet contain one.
  • If there are matching footprint PRs, provide link(s) as appropriate
  • Check the output of the Travis automated check scripts - fix any errors as required
  • Give a reason behind any intentional library convention rule violation.

Be patient, we maintainers are volunteers with limited time and need to check your contribution against the datasheet. You can speed up the process by providing all the necessary information (see above). And you can speed up the process even more by providing additional info like the screenshot of the symbol editor pin table (or for high pin counts converted to csv) sorted in the same way as the pin table in the datasheet and a direct link to the datasheet page that contains the pin table.

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