* \note For the smaller series 2 USB AVRs with limited USB controllers, VBUS is not available to the USB controller.
* this means that the current connection state is derived from the bus suspension and wake up events by default,
* which is not always accurate (host may suspend the bus while still connected). If the actual connection state
* \note For the smaller series 2 USB AVRs with limited USB controllers, VBUS is not available to the USB controller.
* this means that the current connection state is derived from the bus suspension and wake up events by default,
* which is not always accurate (host may suspend the bus while still connected). If the actual connection state