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Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet

Product codes
ATSAMD21-XPRO
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Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
Table 9-3.
NVM User Row Mapping
9.3.2
NVM Software Calibration Area Mapping
The NVM Software Calibration Area contains calibration data that are measured and written during production test. 
These calibration values should be read by the application software and written back to the corresponding register.
The NVM Software Calibration Area can be read at address 0x806020.
The NVM Software Calibration Area can not be written.
Bit Position
Name
Usage
2:0
BOOTPROT
Used to select one of eight different bootloader sizes. 
Refer to 
3
Reserved
6:4
EEPROM
Used to select one of eight different EEPROM sizes. 
7
Reserved
13:8
BOD33 Level
BOD33 Threshold Level at power on. Refer to 
Default value = 7.
14
BOD33 Enable
BOD33 Enable at power on . Refer to 
 register. Default value = 1.
16:15
BOD33 Action
BOD33 Action at power on. Refer to 
 register. Default value = 1.
24:17
Reserved
Voltage Regulator Internal BOD (BOD12) configuration. These bits are written 
in production and must not be changed. Default value = 0x70.
25
WDT Enable
WDT Enable at power on. Refer to WDT 
 register.
Default value = 0.
26
WDT Always-On
WDT Always-On at power on. Refer to WDT 
 register.
Default value = 0.
30:27
WDT Period
WDT Period at power on. Refer to WDT 
 register.
Default value = 0x0B.
34:31
WDT Window
WDT Window mode time-out at power on. Refer to WDT 
Default value = 0x05.
38:35
WDT EWOFFSET
WDT Early Warning Interrupt Time Offset at power on. Refer to WDT 
 register. Default value = 0x0B.
39
WDT WEN
WDT Timer Window Mode Enable at power on. Refer to WDT 
 register. 
Default value = 0.
40
BOD33 Hysteresis
BOD33 Hysteresis configuration at power on. Refer to 
 register.
Default value = 0.
41
Reserved
Voltage Regulator Internal BOD(BOD12) configuration. This bit is written in 
production and must not be changed. Default value = 0.
47:42
Reserved
63:48
LOCK
NVM Region Lock Bits. 
Refer to 
.
Default value = 0xFFFF.