Datasheet

21.12.6 Interrupt Flag Status and Clear in Clock/Calendar mode (CTRLA.MODE=2)
Name: INTFLAG
Offset: 0x0C
Reset: 0x0000
Property: -
Bit 15 14 13 12 11 10 9 8
OVF TAMPER ALARM1 ALARM0
Access
R/W R/W R/W R/W
Reset 0 0 0 0
Bit 7 6 5 4 3 2 1 0
PER7 PER6 PER5 PER4 PER3 PER2 PER1 PER0
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 15 – OVF Overflow
This flag is cleared by writing a '1' to the flag.
This flag is set on the next CLK_RTC_CNT cycle after an overflow condition occurs, and an interrupt
request will be generated if INTENCLR/SET.OVF is '1'.
Writing a '0' to this bit has no effect.
Writing a '1' to this bit clears the Overflow interrupt flag.
Bit 14 – TAMPER Tamper
This flag is set after a tamper condition occurs, and an interrupt request will be generated if
INTENCLR.TAMPER/INTENSET.TAMPER is '1'. Writing a '0' to this bit has no effect. Writing a '1' to this
bit clears the Tamper interrupt flag.
Bits 8, 9 – ALARMn Alarm n [n = 1..0]
This flag is cleared by writing a '1' to the flag.
This flag is set on the next CLK_RTC_CNT cycle after a match with the compare condition, and an
interrupt request will be generated if INTENCLR/SET.ALARMn is one.
Writing a '0' to this bit has no effect.
Writing a '1' to this bit clears the Alarm n interrupt flag.
Bits 0, 1, 2, 3, 4, 5, 6, 7 – PERn Periodic Interval n [n = 7..0]
This flag is cleared by writing a '1' to the flag.
This flag is set on the 0-to-1 transition of prescaler bit [n+2], and an interrupt request will be generated if
INTENCLR/SET.PERx is '1'.
Writing a '0' to this bit has no effect.
Writing a '1' to this bit clears the Periodic Interval n interrupt flag.
SAM D5x/E5x Family Data Sheet
RTC – Real-Time Counter
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 360