49.11 Internal Voltage Reference Electrical Specifications

Table 49-15. Internal Voltage Reference Electrical Specifications (1)
DC CHARACTERISTICSStandard Operating Conditions: VDD = AVDD = 1.62V to 3.63V (unless otherwise stated)

Operating temperature: -40°C ≤ TA ≤ +85°C for Industrial

Param. No.SymbolCharacteristicsMin.Typ. Max.UnitsConditions
VR_1IREF Internal Voltage Reference

ADC.REFCTRL.REFSEL = INTREF

DAC.CTRLB.REFSEL = INTREF

 2.344 2.4 2.455VAVDD=3.3V, TA=25°C

SUPC VREF.SEL = 0x6

VR_3 2.433 2.52.565AVDD=3.3V, TA=25°C

SUPC VREF.SEL = 0x7

VR_9ACIREFInternal Voltage Reference Comparator

AC.COMPCTRLn.MUXNEG = BANDGAP

 1.0861.1 1.122VAVDD=3.3V, TA=25°C
VR_25TDRIFTInternal Voltage Reference Temperature Drift -0.012 — 0.030%/°CAVDD=3.3V
VR_27VDRIFTInternal Voltage Reference Voltage Drift -0.856 — 0.856%/VTA=25°C
Note:
  1. Typical values at 25°C only.