20.4.2.4 Configurable Reset Values

After a Power-On Reset (POR), some registers will be loaded with the initial values from the BOOTCFG - Boot Configuration Fuses section. This includes the following bits and bit fields:

• Enable bit in the Control A register (CTRLA.ENABLE)
• Always-On bit in the Control A register (CTRLA.ALWAYSON)
• Watchdog Timer Window Mode Enable bit in the Control A register (CTRLA.WEN)
• Watchdog Timer Window 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)