STM32H7 genuine vrifiction

[newbeginner]

Hi, I am using stm32h743vih6 in my project and it works fine. But now I want to reduce the power consumption. I have separated VDD and VDDLDO pins on my pcb and was surprised when it had no effect.

I checked ten or more samples from different sellers and all of them have VDDLDO short to VDD.

 

This pins were tested:

 

I know that datasheet is stated that if VDDLDO pin exists then it should work independently from VDD. So now I want to identify that chips

Photos and UID of one of them:

 

 

 

Is it OK or not?

[AScha.3]

Hi,

its OK .

see errata sheet ...TFBGA100 : VDDLDO connected to VDD .

 

btw   ALWAYS read errata sheets first , if “strange” problem emerges .

[newbeginner]

Thank you!