39.5.3 Internal Voltage Reference (VREF) Characteristics

Table 39-17. Internal Voltage Reference (VREF) Characteristics(1)
SymbolDescriptionMin.Typ. Max.UnitsConditions
VVREF_1V024(2)Internal Voltage Reference 1.024V—±4—%VDD ≥ 2.5V, -40°C to 85°C
VVREF_2V048(2)Internal Voltage Reference 2.048V—±4—%VDD ≥ 2.5V, -40°C to 85°C
VVREF_4V096(2)Internal Voltage Reference 4.096V—±4—%VDD ≥ 4.55V, -40°C to 85°C
VVREF_2V500(2)Internal Voltage Reference 2.5V—±4—%VDD ≥ 2.7V, -40°C to 85°C
TVREF_STVREF start-up time—50—μs
Note:
  1. These values are based on characterization and not covered by production test limits.
  2. The symbol VVREF_xVxxx refers to the respective values of the REFSEL bit fields in the VREF.ADC0REF, VREF.DAC0REF and VREF.ACREF registers.