I have bought STM32f427VIT6 marked with 990W6 and 990MK MYS is it Fake?

[MohamadAlmonakel]

I bought this microcontroller from Ali express I try programming but it is not working

[MohamadAlmonakel]

this is a picture for the microcontrollers

[Tesla DeLorean]

The markings look to be consistent with those used by ST

So is the part not programming, or your code not working?

What exactly is something like STM32 Cube Programmer reporting when it connects with the devices?

[MohamadAlmonakel]

I have another microcontroller from another supplier everything is working well

[MohamadAlmonakel]

[TDK]

> I bought this microcontroller from Ali express 

Not looking good so far.

The pin 1 marking has never been an ejection mark on any chips that I've seen. It should be a circle indent, with the ejection mark 180 degrees away. Like this:

 

It's also exceedingly unlikely that a random supplier on Ali express has stock, but nobody else does. Still possible, I suppose.

Although marking can be inconsistent.

https://community.st.com/s/question/0D50X00009XkhjE/stm32f407vgt6-molding-mark-or-pin-1