2020-10-20 05:53 PM
Hi,
STM32CubeMX allows to configure STM32H743 SYSCLK to 400MHZ, D1CPRE Prescaler to /2 and HPRE Prescaler to /1. (CPU CLK = 200MHZ and HCLK = 200MHZ)
But this configuration is not allowed for the STM32H723. The HCLK box turns red and shows a message that HCLK clock must be <= 150MHZ. But HCKL max = 275MHZ for the H723.
Is this a limitation of the STM32H723 or is it a STM32CubeMX bug?
Solved! Go to Solution.
2020-10-22 02:35 AM
2020-10-21 03:53 AM
2020-10-21 02:46 PM
2020-10-22 02:32 AM
Hello Asantos,
This issue is due to wrong value of Power Regulator Voltage Scale. Actually if you go back to the Pinout & Configuration view and select RCC from the component list, in RCC Configuration Panel, the Power parameter is set to Power Regulator Voltage scale 2 which isn't correct since HCLK clock frequency exceeds 150 MHz. Please refer to STM32H723xE/G Data Sheet :
If you select Power Regulator Voltage scale 1, the issue will no longer appear.
Regards,
Khouloud.
2020-10-22 02:35 AM
2020-10-22 05:31 AM
Khouloud,
Thanks. This solve my issue.
2020-10-22 06:12 AM
Please select my post as Best is answered your question, so that thread is marked as solved.
Thanks.