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 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 ADCA and ADCC for offset self-calibration