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Problems in frequency with STM32F429NIH6

Question asked by lucaV on Nov 19, 2015
Latest reply on Nov 20, 2015 by lucaV

I have problems in my project when I set the core frequancy above 100MHz. Up to 100 MHz I have no problem. When frequency is higer than 100 MHz CPU goes in hard fault. Using a frequncy of 120 MHz CPU goes in hard fault after some second or minutes, using 168MHz CPU goes in hard fault immediatly (during GPIOs configuration).

Project wase made using STM32Cube and involves a lot of peripherals (LTDC, CAN, USB, I2C, DCMI and so on). STM32F4 is powered at 3.3V.

This problem is present in two different project that share mcu power scheme and oscillators scheme.

Which can be the problem?
Someone can help me?