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tatsuya
tatsuya
Associate II
December 7, 2022
Solved

About handling pins named "Unused"

  • December 7, 2022
  • 1 reply
  • 1483 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

PatrickF
PatrickFBest answer
ST Employee
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'

In order to give better visibility on the answered topics, please click on 'Best Answer' on the reply which solved your issue or answered your question.Tip of the day: Try Sidekick STM32 AI agent
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