STMF446RE MCU reset issue in custom board

TH.16.336 · ‎2020-06-30

Hello All,

We are using STM32F446RE MCU on our custom board. We have attached the schematic for reset pin and we are able to see RESET pin is getting high or low but MCU reset is not observed in IDE.

We have added a breakpoint in Main() function. When we reset the board (HW reset or SW reset), the NUCLEO-F446RE board is getting resetted but not the custom board.

We have observed a high/low of NRST pin (pin 7) of MCU . Couldn't find what might be the issue.

Please help.

TDK · ‎2020-06-30

NRST connection looks fine. Is your BOOT0 pin pulled down?

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

View solution in original post

TDK · ‎2020-06-30

NRST connection looks fine. Is your BOOT0 pin pulled down?

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

waclawek.jan · ‎2020-06-30

An what about all the ground an supply pins, including analog?

JW

TH.16.336 · ‎2020-07-02

Hello TDK,

Thanks for the suggestion.

Yes that was the issue as BOOT0 was pulled high in our case.