These MPLAB X bare metal examples in Getting Started with Multi Voltage I/O (MVIO) (TB3287) show how the MVIO is used on the AVR® DB family of microcontrollers. The MVIO peripheral allows a subset of the I/O pins to be powered by a different I/O voltage domain VDDIO2, eliminating the need for external level shifters
These Atmel Studio 7 bare metal examples in Getting Started with Multi Voltage I/O (MVIO) (TB3287) show how the MVIO is used on the AVR® DB family of microcontrollers. The MVIO peripheral allows a subset of the I/O pins to be powered by a different I/O voltage domain VDDIO2, eliminating the need for external level shifters.
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