stm32wb does not run when power on
Hello ST Community,
I am working with STM32WB05 in a custom PCB (new design) and it does not run when power on the PCB. To run it, I have to reset by reset line. If I am debugging, I neither have problem.
I had used others microcontroller before (STM32L1, STM32WL55...) and it had never happend.
I have check the pollowing points:
1- Power supply. I am using a externa battery with 3-3,5Volts.
2- BOOT pin: I think that the problem is the STM32WB05 enter in boot mode but in the datasheet, I can not see any pin to enter it.
I have tried to join PA10 to GND by 10K resistor (I see in nucleo manual UM3343 that BOOT0 pin is PA10) but that no work.
3- Clock source: I am using interna clock HSE
4- reset line is always high level
Any confirmation or guidance would be greatly appreciated.
Thank you for your support.