Datasheet

704
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
z Bit 0 – OVF: Overflow Interrupt Enable
0: The Overflow interrupt is disabled.
1: The Overflow interrupt is enabled.
Writing a zero to this bit has no effect.
Writing a one to this bit will set the Overflow Interrupt Disable/Enable bit, which enables the Overflow interrupt.