ATxmega256A3B VBAT registers

The 4 registers of VBAT (Battery Backup Module), from 0xF0, with their reset value and every field. The ATxmega256A3B has 584 registers in 61 peripherals, one page each.

VBAT Battery Backup Module

CTRLControl Register

Address
0xF0
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5HIGHESR
  4. 4XOSCSEL
  5. 3XOSCEN
  6. 2XOSCFDEN
  7. 1ACCEN
  8. 0RESET
6 fields
FieldBitsWhat it does
HIGHESR532-kHz Crystal Oscillator High Power Mode
XOSCSEL432-kHz Crystal Oscillator Output Selection
XOSCEN3Crystal Oscillator Enable
XOSCFDEN2Crystal Oscillator Failure Detection Monitor Enable
ACCEN1Access Enable
RESET0Reset

STATUSStatus Register

Address
0xF1
Reset
0x00
Access
read/write
  1. 7BBPWR
  2. 6–
  3. 5–
  4. 4–
  5. 3XOSCRDY
  6. 2XOSCFAIL
  7. 1BBBORF
  8. 0BBPORF
5 fields
FieldBitsWhat it does
BBPWR7Battery backup Power
XOSCRDY3Crystal Oscillator Ready
XOSCFAIL2Crystal Oscillator Failure
BBBORF1Battery Backup Brown-Out Reset Flag
BBPORF0Battery Backup Power-On Reset Flag

BACKUP0Backup Register 0

Address
0xF2
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1–
  8. 0–

BACKUP1Backup Register 1

Address
0xF3
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1–
  8. 0–