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Visitor II
July 2, 2025
Solved

STM32G4 Performance at 1.8V

  • July 2, 2025
  • 1 reply
  • 241 views

Would STM32G4 performance gets effected if runs at lower voltage (1.8V)? Can the core clock run at max 170MHZ or it will run lower speed?

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

    The max clock speed of some things will be lower at 1.8 V than at 3.3 V. For example, the max SPI speed is lower. You can see this in the datasheet.

    TDK_0-1751492596464.png

     

     

    However, the core clock can still run at 170 MHz at 1.8 V. No loss in performance there.

    1 reply

    TDKAnswer
    Super User
    July 2, 2025

    The max clock speed of some things will be lower at 1.8 V than at 3.3 V. For example, the max SPI speed is lower. You can see this in the datasheet.

    TDK_0-1751492596464.png

     

     

    However, the core clock can still run at 170 MHz at 1.8 V. No loss in performance there.