I want to do a compatibility design with K20P100M72SF1 and K22P121M100SF9. The K20 has an inner USB regulator, but K22 not. The pin G3 of K22 is USBVDD, and K20 is VOUT33. In my design, i donot need the USB Vbus to supply for the device. I'm not sure whether can I directly connect the pin G3 to the 3.3V for K20?