The analog subsystem has the following features:
- Flexible voltage references:
- The ADCs are referenced to VREFHIx and VREFLOx pins.
- VREFHIAB and
VREFHICDE pin voltages 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 2.5V for ADC
A and ADC B when operated in 16-bit mode; however, the internal
voltage reference range can be selected to be 0V to 3.3V or 0V
to 2.5V for ADC A and ADC B when operated in 12-bit mode.
- The internal
voltage reference range can be selected to be 0V to 3.3V or 0V
to 2.5V for ADC C, ADC D, and ADC E.
- 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 for offset self-calibration