Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet

134

SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]

11063K–ATARM–05-Nov-13

Name: RTC_SR

0xFFFFFEC8

Access: Read-only 

0 (FREERUN): Time and calendar registers cannot be updated.

1 (UPDATE): Time and calendar registers can be updated.

0 (NO_ALARMEVENT): No alarm matching condition occurred.

1 (ALARMEVENT): An alarm matching condition has occurred.

0 (NO_SECEVENT) = No second event has occurred since the last clear.

1 (SECEVENT) = At least one second event has occurred since the last clear.

0 (NO_TIMEVENT): No time event has occurred since the last clear.

1 (TIMEVENT): At least one time event has occurred since the last clear.

The time event is selected in the TIMEVSEL field in RTC_CR (Control Register) and can be any one of the following events: min-
ute change, hour change, noon, midnight (day change).

0 (NO_CALEVENT): No calendar event has occurred since the last clear.

1 (CALEVENT): At least one calendar event has occurred since the last clear.

The calendar event is selected in the CALEVSEL field in RTC_CR and can be any one of the following events: week change, 
month change and year change.

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

–

–

–

–

–

–

15

14

13

12

11

10

9

8

–

–

–

–

–

–

–

–

7

6

5

4

3

2

1

0

–

–

–

CALEV

TIMEV

SEC

ALARM

ACKUPD