AVR128DB64 VREF registers

The 3 registers of VREF (Voltage reference), from 0xB0, with their reset value and every field. The AVR128DB64 has 746 registers in 62 peripherals, one page each.

VREF Voltage reference

ADC0REFADC0 Reference

Address
0xB0
Reset
0x00
Access
read/write
  1. 7ALWAYSON
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2REFSEL2
  7. 1REFSEL1
  8. 0REFSEL0
2 fields
FieldBitsWhat it does
ALWAYSON7Always on
REFSEL2:0Reference select
  • 0 Internal 1.024V reference
  • 1 Internal 2.048V reference
  • 2 Internal 4.096V reference
  • 3 Internal 2.500V reference
  • 5 VDD as reference
  • 6 External reference on VREFA pin

DAC0REFDAC0 Reference

Address
0xB2
Reset
0x00
Access
read/write
  1. 7ALWAYSON
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2REFSEL2
  7. 1REFSEL1
  8. 0REFSEL0
2 fields
FieldBitsWhat it does
ALWAYSON7Always on
REFSEL2:0Reference select
  • 0 Internal 1.024V reference
  • 1 Internal 2.048V reference
  • 2 Internal 4.096V reference
  • 3 Internal 2.500V reference
  • 5 VDD as reference
  • 6 External reference on VREFA pin

ACREFAC Reference

Address
0xB4
Reset
0x00
Access
read/write
  1. 7ALWAYSON
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2REFSEL2
  7. 1REFSEL1
  8. 0REFSEL0
2 fields
FieldBitsWhat it does
ALWAYSON7Always on
REFSEL2:0Reference select
  • 0 Internal 1.024V reference
  • 1 Internal 2.048V reference
  • 2 Internal 4.096V reference
  • 3 Internal 2.500V reference
  • 5 VDD as reference
  • 6 External reference on VREFA pin