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Graduate II
October 28, 2025
Solved

B3 on the NUCLEO-C092RC is not mentioned on the UM3353

  • October 28, 2025
  • 2 replies
  • 146 views

Hello ST Community team,

on the MB2046 schematic, there is a button called B3 or Boot mode pin:

Issamos_0-1761645530483.png

But the UM3353 (chapter 7.9) mention only B1 and B2:

Issamos_1-1761645637407.png

Could you please correct this on the coming doc revisions.

Best Regards.

II

    This topic has been closed for replies.
    Best answer by Imen.D

    Hello @Issamos 

    Thank you for having reported this.

    You are right ! The function for B3 Boot mode is missing description in UM3353.

    An internal ticket ID 220601 is submitted in order to correct this.
    (PS: Ticket ID 220601 is an internal tracking number and is not accessible or usable by customers).

    2 replies

    Imen.DAnswer
    Technical Moderator
    October 28, 2025

    Hello @Issamos 

    Thank you for having reported this.

    You are right ! The function for B3 Boot mode is missing description in UM3353.

    An internal ticket ID 220601 is submitted in order to correct this.
    (PS: Ticket ID 220601 is an internal tracking number and is not accessible or usable by customers).

    Technical Moderator
    December 16, 2025

    Hi @Issamos 

    The UM3353 is now updated and published with correction.

    Thank you for your contributions.