Datasheet

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Bit Position Name Usage
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 NVMCTRL – Non-Volatile Memory
Controller.
Default value = 0xFFFF.
Related Links
22. NVMCTRL – Nonvolatile Memory Controller
17.8.14 BOD33
18.8.1 CTRL
10.3.2 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.
Table 10-5. NVM Software Calibration Area Mapping
Bit Position Name Description
2:0 Reserved
14:3 Reserved
26:15 Reserved
34:27 ADC LINEARITY ADC Linearity Calibration. Should be written to ADC CALIB
register.
37:35 ADC BIASCAL ADC Bias Calibration. Should be written to ADC CALIB
register.
44:38 OSC32K CAL OSC32KCalibration. Should be written to SYSCTRL OSC32K
register.
49:45 USB TRANSN USB TRANSN calibration value. Should be written to USB
PADCAL register.
54:50 USB TRANSP USB TRANSP calibration value. Should be written to USB
PADCAL register.
57:55 USB TRIM USB TRIM calibration value. Should be written to the USB
PADCAL register.
63:58 DFLL48M COARSE CAL DFLL48M Coarse calibration value. Should be written to
SYSCTRL DFLLVAL register.
SAM D21 Family
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© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 44