I think pin 22 GND is more of providing a good ground for the analog circuity (internal and external) rather than being part of the main power supply like pin 8 GND. You don't want high currents going through the analog ground.
I think pin 22 GND is more of providing a good ground for the analog circuity (internal and external) rather than being part of the main power supply like pin 8 GND. You don't want high currents going through the analog ground.