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August 13, 2025
Question

Vbat minimum on STM32N6

  • August 13, 2025
  • 1 reply
  • 247 views

I am designing the power system for an application using the STM32N645. In the datasheet for the STM32N6x5 minimum Vbat is defined as "TBD". In the STM32N6570-DK schematic the Vbat rail is set to 3.3V. If it can operate at 1.8V it would simplify the power architecture.

Screenshot 2025-08-13 at 5.31.19 PM.png

Does anyone have any experience with running it at 1.8V? Or is there a timeline for when this specification will be released?

Thanks!

-Bash

    This topic has been closed for replies.

    1 reply

    Technical Moderator
    August 15, 2025

    Hello @bashReflex and welcome to the Community;

     

    I will check the minimum VBAT value on STM32N6 internally. I will get back to you as soon as possible.

    Internal ticket number: 215811 (This is an internal tracking number and is not accessible or usable by customers).

     

    Thank you.

    Kaouthar