STM32H7S7L8H6: How to connect the VDD50USB pin when USB is not in use?

[JK1234]

Hello Team,

One more query is there.

We are not using USB. In STM32H7S7L8H6 pin D9-VDD50USB is there. So, can we connect it with 3.3V supply?

Thanks & Regards,

Jignesh Karena

[KDJEM.1]

Hello @JK1234 ;

I recommend you to look at AN5935 application note Table 4. Power supply connection. 

If USB is not used, it is recommended to VDD33USB 0V.

And when the internal USB regulator is not use , the VDD50USB must be connected to VDD33USB.

Thank you.

Kaouthar