The analog subsystem has the following features:
- Flexible voltage references:
- The ADCs are referenced to VREFHIx
and VREFLOx pins.
- VREFHIA pin voltage can be driven
in externally or can be generated by an internal bandgap voltage reference.
VREFHIB and VREFHIC can be connected to the internal reference using an external
on-board connection.
- The internal voltage reference
range can be selected to be 0 V to 3.3 V or 0 V to 2.5 V.
- The buffered DACs are referenced to
VREFHIx and VSSA
- Alternately, these DACs can be
referenced to the VDAC pin and VSSA
- The comparator DACs are referenced to
VDDA and VSSA
- Alternately, these DACs can be
referenced to the VDAC pin and VSSA
- Flexible pin usage
- Buffered DAC outputs, comparator
subsystem inputs, and digital inputs (AIOs)/outputs (AGPIOs) are multiplexed with ADC
inputs