STM32H725REV Max Core Clock

TKana.1 · ‎2026-04-15

Hi,

Planning to use VFQFPN68 package. I am confused about the max core clock I can use. CubeMx shows 550MHz for every "Power Regulator Voltage Scale (0-3)".

I remember reading VFQFPN68 has only DCDC solution so max core clock is 400MHz

Can anyone explain please?

Thanks,

Tim

mƎALLEm · ‎2026-04-15

Hello,

I think you are talking about STM32H7 dual core that has that restriction in SMPS mode:

But STM32H723 doesn't have such restriction in SMPS mode:

See also FAQ: Why the DIRECT_SMPS_SUPPLY option is not shown in STM32CubeMX for STM32H7 MCUs

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

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TDK · ‎2026-04-15

Max clock speed is 550 MHz.

Achieved only in VOS0 and BOOST.

If you feel a post has answered your question, please click "Accept as Solution".

mƎALLEm · ‎2026-04-15

Hello,

I think you are talking about STM32H7 dual core that has that restriction in SMPS mode:

But STM32H723 doesn't have such restriction in SMPS mode:

See also FAQ: Why the DIRECT_SMPS_SUPPLY option is not shown in STM32CubeMX for STM32H7 MCUs

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.