24.6.2.2 Configurable Reset Values

After a Power-on Reset, some registers will be loaded with initial values from the NVM User Row.

This includes the following bits and bit groups:

  • Enable bit in the Control A register, CTRLA.ENABLE
  • Always-On bit in the Control A register, CTRLA.ALWAYSON
  • Watchdog Timer Windows Mode Enable bit in the Control A register, CTRLA.WEN
  • Watchdog Timer Windows Mode Time-Out Period bits in the Configuration register, CONFIG.WINDOW
  • Time-Out Period bits in the Configuration register, CONFIG.PER
  • Early Warning Interrupt Time Offset bits in the Early Warning Interrupt Control register, EWCTRL.EWOFFSET

References:

NVM User Row Mapping