ATxmega256A3B RTC32 registers

The 7 registers of RTC32 (32-bit Real-Time Counter), from 0x420, with their reset value and every field. The ATxmega256A3B has 584 registers in 61 peripherals, one page each.

RTC32 32-bit Real-Time Counter

CTRLControl Register

Address
0x420
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1–
  8. 0ENABLE
1 field
FieldBitsWhat it does
ENABLE0RTC enable

SYNCCTRLSynchronization Control/Status Register

Address
0x421
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4SYNCCNT
  5. 3–
  6. 2–
  7. 1–
  8. 0SYNCBUSY
2 fields
FieldBitsWhat it does
SYNCCNT4Synchronization Busy Flag
SYNCBUSY0Synchronization Busy Flag

INTCTRLInterrupt Control Register

Address
0x422
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3COMPINTLVL1
  6. 2COMPINTLVL0
  7. 1OVFINTLVL1
  8. 0OVFINTLVL0
2 fields
FieldBitsWhat it does
COMPINTLVL3:2Compare Match Interrupt Level
  • 0 Interrupt Disabled
  • 1 Low Level
  • 2 Medium Level
  • 3 High Level
OVFINTLVL1:0Overflow Interrupt Level
  • 0 Interrupt Disabled
  • 1 Low Level
  • 2 Medium Level
  • 3 High Level

INTFLAGSInterrupt Flags

Address
0x423
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1COMPIF
  8. 0OVFIF
2 fields
FieldBitsWhat it does
COMPIF1Compare Match Interrupt Flag
OVFIF0Overflow Interrupt Flag

CNTCount Register

Address
0x424
Reset
0x00000000
Access
read/write
Size
32-bit

PERPeriod Register

Address
0x428
Reset
0x00000000
Access
read/write
Size
32-bit

COMPCompare Register

Address
0x42C
Reset
0x00000000
Access
read/write
Size
32-bit