44.6.2.1 Initialization

The BIASREFBUF and BIASCOMP calibration values from the production test must be loaded from the NVM Software Calibration Area into the ADC Calibration register (CALIB) by software to achieve specified accuracy.

The following registers are enable-protected, meaning that they can only be written when the ADC is disabled (CTRLA.ENABLE=0):

• Control B register (CTRLB)
• Reference Control register (REFCTRL)
• Event Control register (EVCTRL)
• Calibration register (CALIB)

Enable-protection is denoted by the "Enable-Protected" property in the register description.