Missing SCALE3 for Power Regulator V scale in CubeMX for STM32H730

[MRick.2]

In the manual RM0468 for the STM32H730 say that the reg "PWR_D3CR" bits "VOS" has

00: Scale 0

01: Scale 3 (default)

10: Scale 2

11: Scale 1

Also in the code defines in "stm32h7xx_hal_pwr.h"

#define PWR_REGULATOR_VOLTAGE_SCALE0 (0U)

#define PWR_REGULATOR_VOLTAGE_SCALE1 (PWR_D3CR_VOS_1 | PWR_D3CR_VOS_0)

#define PWR_REGULATOR_VOLTAGE_SCALE2 (PWR_D3CR_VOS_1)

#define PWR_REGULATOR_VOLTAGE_SCALE3 (PWR_D3CR_VOS_0)

But in CubeMX Version "6.6.1" Lib version "1.10.0"

Only Scale 0,1,2 is selectebel. Se image

[Aziz BRIGUI · Accepted solution]

Hello @MRick.2​,

To enable VOS3 on an STM32H730, the core frequency Fcpu must be at most 170 MHz. I suppose that in your STM32CubeMX project, the core frequency is in the interval ]170MHz, 300MHz].

For further details, I suggest you refer to DS13315 page 108.

I hope you find this helpful !

Aziz