How the H750 kernel is powered using an external power supply

[allgoodhi]

When using the STM32H750VBT6, I supplied around 1.37-1.4 supply voltage to the external pins VCAP1 and VCAP2,the project was configured as an external power supply using cubemx software.HAL_PWREx_ConfigSupply(PWR_EXTERNAL_SOURCE_SUPPLY); is used in the program.Frequency automatically configured to 480 MHz via cubemx (internal clock source).

According to the manual said burned into the power-off restart, and then to be effective, after the start may not be able to recognize the chip can not be debugged, good luck may be debugging, but run for a while will enter the Hardware Error Interrupt Function in the HardFault_Handler().How to solve this problem.

[AScha.3 · Accepted solution]

>supplied around 1.37-1.4

"around" is not adequate definition here ; :)

+

this is core supply , maybe 200mA needed; so  R48/49 = 0. 

And Vcap low noise, low impedance source !

[allgoodhi]

Voltage fixed at 1.375V，Do you mean to use 0R resistors for R48 and R49?

[allgoodhi]

切换到 0R 解决了它，谢谢