The analog subsystem has the following features:
- Flexible voltage references
- The ADCs are referenced
to VREFHIx and VSSA pins
- VREFHIx pin
voltage can be driven in externally or can be generated by an
internal bandgap voltage reference
- The internal
voltage reference range can be selected to be 0V to 3.3V or 0V
to 2.5V
- 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
- Internal connection to
VREFLO on all ADCs for offset self-calibration