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SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

Name: RTC_TIMALR

0x400E1470

Access: Read-write

Note:

To change one of the SEC, MIN, HOUR fields, it is recommended to disable the field before changing the value and 
then re-enable it after the change has been made. This requires up to 3 accesses to the RTC_TIMALR register. The 
first access clears the enable corresponding to the field to change (SECEN,MINEN,HOUREN). If the field is already 
cleared, this access is not required. The second access performs the change of the value (SEC, MIN, HOUR). The 
third access is required to re-enable the field by writing 1 in SECEN, MINEN, HOUREN fields.

This field is the alarm field corresponding to the BCD-coded second counter.

0 = The second-matching alarm is disabled.

1 = The second-matching alarm is enabled.

This field is the alarm field corresponding to the BCD-coded minute counter.

0 = The minute-matching alarm is disabled.

1 = The minute-matching alarm is enabled.

This field is the alarm field corresponding to the BCD-coded hour counter.

This field is the alarm field corresponding to the BCD-coded hour counter.

0 = The hour-matching alarm is disabled.

1 = The hour-matching alarm is enabled.

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

HOUREN

AMPM

HOUR

15

14

13

12

11

10

9

8

MINEN

MIN

7

6

5

4

3

2

1

0

SECEN

SEC