STM32G030C6 Getting Very Hot

[Robert Ritchey]

On my current board the STM32G030 is getting very hot.  I have even tried a board with no connections to the processor and all pins set to analog.  I have checked the power supply and it's 3.3V.  The board runs OK but I am worried about the processor temp.  I have attached a schematic of the board.  Could something internally be configured to cause this heating?  

[Robert Ritchey]

Found it. 

[Robert Ritchey]

It was a bit embarrassing.  I have a 3 pin connector (unpolarized) for power that goes signal, power, ground.  In the board there is no notation which end is which. I was plugging it in backwards so the ground was a signal wire connected to the processor.  The processor was grounded through an output.  It ran just fine, programmed just fine, it just got hot.  I must commend ST in building a processor so resilient to dumb mistakes. 

[Peter BENSCH]

Since you asked the public community for help, the community would also be happy to know what caused your problem. Perhaps this will also help another user?

Regards
/Peter