6509 - CertusPro-NX: NC(No Connections) pins of CertusPro NX should be connected to GND, or can be left open/floating?

6509 - CertusPro-NX: NC(No Connections) pins of CertusPro NX should be connected to GND, or can be left open/floating?

No Connection pin is not actually connected on die so, either floating or ground connection can be applied.