STM32U585 VDDIO2

Ballimo — Tue, 20 Feb 2024 17:04:53 GMT

Hello Community,

I am using the STM32U585 in a design, and I have VDD at 3.3V and VDDIO2 at 1.8V.

The 1.8V rail is supplied by a 3.3V to 1.8V voltage regulator. I connected the Enable of this voltage regulator to one of the STM32U585 I/O (this I/O isn't on the PG port, because PG port is supplied by VDDIO2). Do you foresee any problem with this setup? I mean the 3.3V will turn on at first, and then the STM32 will turn on the 1.8V regulator, which supply VDDIO2 rail.

In the datasheet it is clear that, VDDIO2 and VDD are two independent supplies. I just want a confirmation, and if someone here has a similar implementation in a working design.

Thank you,

Ballimo

Re: STM32U585 VDDIO2

Alondra — Tue, 20 Feb 2024 18:47:02 GMT

STM32U585 does not belong to the NXP portfolio and belongs to STMicroelectronics, please contact them for further support.

I'm sorry for the inconvenience this may cause

Best regards

Tech support

topic STM32U585 VDDIO2 in Other NXP Products

STM32U585 VDDIO2

Re: STM32U585 VDDIO2