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tatsuya
Visitor II
December 7, 2022
Solved

About handling pins named "Unused"

  • December 7, 2022
  • 1 reply
  • 888 views

Hi team,

I'm developing a our PCB equipped with STM32MP151AAA3.

Are the following pins named "Unused" okay to remain open?

VDD_Unused

VDD1V2_Unused

VDDA1V8_Unused

Best regard,

    This topic has been closed for replies.
    Best answer by PatrickF

    Hi @tatsuya​ 

    I recommend reading AN5031.

    If you don't want to provision your board for future IC replacement with new features (e.g. use STM32MP157C with DSI interface), the _Unused pin could be left open.

    Regards,

    In order to give better visibility on the answered topics, please click on 'Select as Best' on the reply which solved your issue or answered your question. See also 'Best Answers'

    1 reply

    P
    PatrickFAnswer
    Technical Moderator
    December 8, 2022

    Hi @tatsuya​ 

    I recommend reading AN5031.

    If you don't want to provision your board for future IC replacement with new features (e.g. use STM32MP157C with DSI interface), the _Unused pin could be left open.

    Regards,

    In order to give better visibility on the answered topics, please click on 'Select as Best' on the reply which solved your issue or answered your question. See also 'Best Answers'

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