STM32L412KBU3 DFU

[JChristian]

Need some clarification on implementing the DFU functionality on STM32L412KBU3.

According to the note in AN2606 (page 350), it states: "VDDUSB IO must be connected to 3.3 V" however, on the STM32L412KBU3 (UFQFPN32) the VDDUSB pin does not exist.

Currently, VDD is powered by +1V8 on my application of the STM32L412KBU3.

Will I have any issues with DFU moving forward?

[STOne-32]

Dear @JChristian ,

In this case, you can not use USB for DFU and you can instead use others protocols. 


STOne-32

[JChristian]

To enable DFU do you suggest powering VDD with 3.3V or is DFU not available at all for STM32L412KBU3?

[STOne-32 · Accepted solution]

Dear @JChristian ,

Powering VDD at 3.3Volts will be fine with USB and DFU .  I thought That impossible in your application as VDD =1.8V.

Let us know

Ciao

STOne-32.