9.1.3.4 Fixed Voltage Reference Data

The Fixed Voltage Reference (FVR) is a stable voltage reference, independent of VDD, with 1.024V, 2.048V or 4.096V selectable output levels. The output of the FVR can be configured to supply a reference voltage to the following:
  • ADC input channel
  • ADC positive reference
  • Comparator positive input
  • Digital-to-Analog Converter (DAC)

For more information on the FVR, refer to the “FVR - Fixed Voltage Reference” chapter.

The DIA stores measured FVR voltages for this device in mV for the different buffer settings of 1x, 2x or 4x.
  • FVRA1X stores the value of ADC FVR1 Output Voltage for 1x setting (in mV)
  • FVRA2X stores the value of ADC FVR1 Output Voltage for 2x setting (in mV)
  • FVRA4X stores the value of ADC FVR1 Output Voltage for 4x setting (in mV)
  • FVRC1X stores the value of Comparator FVR2 Output Voltage for 1x setting (in mV)
  • FVRC2X stores the value of Comparator FVR2 Output Voltage for 2x setting (in mV)
  • FVRC4X stores the value of Comparator FVR2 Output Voltage for 4x setting (in mV)