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Visitor II
December 3, 2025
Solved

STM32WB09 Reference Manual & Datasheet Disagree on GPIO Alt Functions

  • December 3, 2025
  • 3 replies
  • 150 views

In the STM32WB09's Reference Manual, RM0505 Rev 3, Table 8: PA10 and PA11 have SWD modes for their AF4.

However, in the STM32WB09 datasheet, DS14210 Rev 6, Table 6 and Table 7: PA10 and PA11 have no AF4.

 

Which one is correct?

Best answer by Imen.D

Hello @physgun ,

After internal checks, I confirm that the information on the STM32WB09 datasheet (DS14210 Rev 6) is correct, and the RM0505 must be updated (no AF4 SWD modes on PA10 and PA11).

We'll take the necessary action to fix this point on next planned Reference Manual release (Request tracked through an internal ticket number: 223111 - This ticket is only for reference and is not available outside of ST).

Thank you for your contribution.

3 replies

Technical Moderator
December 4, 2025

Hello @physgun 

Thank you for having reported this issue.

I am checking it internally and I will return to you with details about the corrective actions we will take.

"When your question is answered, please close this topic by clicking ""Accept as Solution"".ThanksImen"
Imen.DBest answer
Technical Moderator
December 9, 2025

Hello @physgun ,

After internal checks, I confirm that the information on the STM32WB09 datasheet (DS14210 Rev 6) is correct, and the RM0505 must be updated (no AF4 SWD modes on PA10 and PA11).

We'll take the necessary action to fix this point on next planned Reference Manual release (Request tracked through an internal ticket number: 223111 - This ticket is only for reference and is not available outside of ST).

Thank you for your contribution.

"When your question is answered, please close this topic by clicking ""Accept as Solution"".ThanksImen"
Technical Moderator
February 24, 2026

Hello @physgun 

I would like to inform you that the new reference manual (RM0505 Rev 4) has been released with corrections.

Thank you for your contributions.

"When your question is answered, please close this topic by clicking ""Accept as Solution"".ThanksImen"