2016-04-18 05:42 AM
Hi,
I'm trying to launch a new board with STM32F745ZGT6 (LQFP144). I see, that MCU case looks slightly differ to the one presented in datasheet on page 207 DocID027590 Rev 4. So I would make sure for the proper position of the first pin.Could sb confirm where the first pin should be located on CPU in attached picture?2016-04-18 06:47 AM
Hi chwila.sebastian,
The right pin 1 position is on the left bottom corner as it is detailed on the Figure 88 and Figure 90 in the related datasheet.-Syrine-2016-04-18 10:15 AM
Bottom left by White Dot, Pin#1Another thread looking at orientation mark, vs tooling marks, all except last image I have an arrow pointing to the orientation mark.
https://community.st.com/0D50X00009Xka68SAB
Edit: Fixed DEAD LINK, original post from 19-Apr-2016
2016-04-19 01:17 AM
The 64-pin chip also has a clear dot on the opposite side. Indeed difficult to determine which one is the ''pin 1 indicator'' and which one is ''just a molding artefact''.
Hint for ST: If the molding artifact is always round, make the pin-1-indicator square.