AVR32SD20 FUSE registers

The 7 registers of FUSE (Fuses), from 0x1050, with their reset value and every field. The AVR32SD20 has 580 registers in 51 peripherals, one page each.

FUSE Fuses

WDTCFGWatchdog Configuration

Address
0x1050
Reset
0x00
Access
read/write
  1. 7WINDOW3
  2. 6WINDOW2
  3. 5WINDOW1
  4. 4WINDOW0
  5. 3PERIOD3
  6. 2PERIOD2
  7. 1PERIOD1
  8. 0PERIOD0
2 fields
FieldBitsWhat it does
WINDOW7:4Watchdog Window Timeout Period
  • 0 Off
  • 1 8 cycles (244 us)
  • 2 16 cycles (488 us)
  • 3 32 cycles (976 us)
  • 4 64 cycles (1.95 ms)
  • 5 128 cycles (3.9 ms)
  • 6 256 cycles (7.8 ms)
  • 7 512 cycles (15.625 ms)
  • 8 1K cycles (31.25 ms)
  • 9 2K cycles (62.5 ms)
  • 10 4K cycles (125 ms)
  • 11 8K cycles (250 ms)
PERIOD3:0Watchdog Timeout Period
  • 0 Off
  • 1 8 cycles (244 us)
  • 2 16 cycles (488 us)
  • 3 32 cycles (976 us)
  • 4 64 cycles (1.95 ms)
  • 5 128 cycles (3.9 ms)
  • 6 256 cycles (7.8 ms)
  • 7 512 cycles (15.625 ms)
  • 8 1K cycles (31.25 ms)
  • 9 2K cycles (62.5 ms)
  • 10 4K cycles (125 ms)
  • 11 8K cycles (250 ms)

BODCFGBOD Configuration

Address
0x1051
Reset
0x00
Access
read/write
  1. 7LVL2
  2. 6LVL1
  3. 5LVL0
  4. 4SAMPFREQ
  5. 3ACTIVE1
  6. 2ACTIVE0
  7. 1SLEEP1
  8. 0SLEEP0
4 fields
FieldBitsWhat it does
LVL7:5BOD Level
  • 0 1.9V
  • 1 2.45V
  • 2 2.7V
  • 3 2.85V
SAMPFREQ4BOD Sample Frequency
  • 0 Sample frequency is 128 Hz
  • 1 Sample frequency is 32 Hz
ACTIVE3:2BOD Operation in Active Mode
  • 0 BOD disabled
  • 1 BOD enabled in continuous mode
  • 2 BOD enabled in sampled mode
  • 3 BOD enabled in continuous mode. Execution is halted at wake-up until BOD is running.
SLEEP1:0BOD Operation in Sleep Mode
  • 0 BOD disabled
  • 1 BOD enabled in continuous mode
  • 2 BOD enabled in sampled mode

SYSCFG0System Configuration 0

Address
0x1055
Reset
0x00
Access
read/write
  1. 7CRCBOOT
  2. 6CRCSEL
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1BROWSAVE
  8. 0EESAVE
4 fields
FieldBitsWhat it does
CRCBOOT7CRC Boot
CRCSEL6CRC Select
  • 0 Enable CRC16
  • 1 Enable CRC32
BROWSAVE1Boot Row Saved
EESAVE0EEPROM Save

SYSCFG1System Configuration 1

Address
0x1056
Reset
0x48
Access
read/write
  1. 7WDTMON1
  2. 6WDTMON0
  3. 5–
  4. 4MVSYSCFG1
  5. 3MVSYSCFG0
  6. 2SUT2
  7. 1SUT1
  8. 0SUT0
3 fields
FieldBitsWhat it does
WDTMON7:6WDT Monitor Configuration
  • 0 Monitor is disabled
  • 1 Monitor is always on (Reset value)
  • 2 Monitor is always on in normal and IDLE mode, but automatically disabled when the MCU is in POWERDOWN and STANDBY sleep modes
  • 3 Reserved
MVSYSCFG4:3MVIO System Configuration
  • 0 Reserved
  • 1 Device used in a dual supply configuration
  • 2 Device used in a single supply configuration
SUT2:0Startup Time
  • 0 0 ms
  • 1 1 ms
  • 2 2 ms
  • 3 4 ms
  • 4 8 ms
  • 5 16 ms
  • 6 32 ms
  • 7 64 ms

CODESIZECode Section Size

Address
0x1057
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1–
  8. 0–

BOOTSIZEBoot Section Size

Address
0x1058
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1–
  8. 0–

PDICFGProgramming and Debugging Interface Configuration

Address
0x105A
Reset
0x0003
Access
read/write
Size
16-bit
2 fields
FieldBitsWhat it does
KEY15:4NVM Protection Activation Key select
  • 0 Not active
  • 2885 NVM Protection active
LEVEL1:0Protection Level select
  • 2 NVM access through UPDI disabled
  • 3 UPDI and UPDI pins working normally