About the ground pad of E144-pin package

Hi Ysuzu21,
there is the following sentence in a pinout document for Intel MAX 10 device, 10M16SA (https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/max-10/10m16sa.pdf

The E144-pin package has an exposed ground pad at the bottom of the package. The exposed ground pad is used for electrical connectivity and not for thermal purposes. You must connect the exposed ground pad to the ground plane of the PCB.

Regards,
Martin