Where is pin Nr 1?

[JulienD]

Hello,

On this picture, which is the pin Nr 1?

Top right or bottom left ?

Thanks

Julien

[Uwe Bonnes]

Look in the datasheet under Device marking. Normmally when the labels are readable like normal text, Pin 1 is bottom left

[Tesla DeLorean · Accepted solution]

Bottom Left (see Nucleo-144 Board), the top-right is the ejector mark from the mold.

[JulienD]

Ok, I always thought that labels were not a reliable way to identify pins.

Btw, in CubeMX, it is a third orientation...

I just need to unsoldier it.... :(

Thanks.

[Tesla DeLorean]

There have been previous threads where I've posted pictures. Different manufacturing sites have different equipment so there are usually a couple of variations in the plastic and printing or laser marking.

I think the marking could be a lot move obvious and consistent.