21.3 Peripherals Using Voltage References

The devices of the AVR DD family have several peripherals that can use a voltage reference.

• The DAC peripheral uses the voltage reference controlled by the VREF.DAC0REF register.
• The AC peripheral is using input pins, but the negative input can be routed to use the voltage reference controlled by the VREF.ACREF register. The instances of the AC peripheral share the same voltage reference from the VREF peripheral. In addition, each AC instance has its independent voltage divider for the incoming reference voltage, controlled by the respective ACn.DACREF register.
• The ADC peripheral uses the voltage reference controlled by the VREF.ADC0REF register.