ATxmega128D4 RTC registers

The 8 registers of RTC (Real-Time Counter), from 0x400, with their reset value and every field. The ATxmega128D4 has 441 registers in 45 peripherals, one page each.

RTC Real-Time Counter

CTRLControl Register

Address
0x400
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2PRESCALER2
  7. 1PRESCALER1
  8. 0PRESCALER0
1 field
FieldBitsWhat it does
PRESCALER2:0Prescaling Factor
  • 0 RTC Off
  • 1 RTC Clock
  • 2 RTC Clock / 2
  • 3 RTC Clock / 8
  • 4 RTC Clock / 16
  • 5 RTC Clock / 64
  • 6 RTC Clock / 256
  • 7 RTC Clock / 1024

STATUSStatus Register

Address
0x401
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1–
  8. 0SYNCBUSY
1 field
FieldBitsWhat it does
SYNCBUSY0Synchronization Busy Flag

INTCTRLInterrupt Control Register

Address
0x402
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
0x403
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

TEMPTemporary register

Address
0x404
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1–
  8. 0–

CNTCount Register

Address
0x408
Reset
0x0000
Access
read/write
Size
16-bit

PERPeriod Register

Address
0x40A
Reset
0x0000
Access
read/write
Size
16-bit

COMPCompare Register

Address
0x40C
Reset
0x0000
Access
read/write
Size
16-bit