Mysterious pads on Nucleo64 and Nucleo144

[waclawek.jan]

Posted on May 02, 2016 at 15:12

A Nucleo144 landed on my desk. As with every new board, there has been a stare-and-criticize session, and somebody noticed four pads at the four corners of the chip, at a 45 deg. angle. They are roughly of 0805 size and full of solder.

I have looked at the Nucleo64 UM and they are there, too. Not on the Nucleo32. Anybody knows the purpose of these? Thanks, Jan Waclawek

[waclawek.jan]

Posted on May 02, 2016 at 15:54

Mystery solved 🙂

These pads are to anchor a test socket

http://chiptron.petus.cz/photogallery.php?photo_id=34

socket nr is IC149-064 / IC149-144. JW