Atmel Evaluation Kit for the SAM4E Series of Flash Microcontrollers ATSAM4E-EK ATSAM4E-EK Data Sheet

SAM4E [DATASHEET]

Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14

338

Name:  

RTC_CR

0x400E1860

Access:  

Read/Write

This register can only be written if the WPEN bit is cleared in the System Controller Write Protection Mode Register 
(SYSC_WPMR).



0: No effect.

1: Stops the RTC time counting.

Time counting consists of second, minute and hour counters. Time counters can be programmed once this bit is set and 
acknowledged by the bit ACKUPD of the RTC_SR.



0: No effect.

1: Stops the RTC calendar counting.

Calendar counting consists of day, date, month, year and century counters. Calendar counters can be programmed once 
this bit is set and acknowledged by the bit ACKUPD of the RTC_SR.



The event that generates the flag TIMEV in RTC_SR depends on the value of TIMEVSEL.

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

–

–

–

–

CALEVSEL

15

14

13

12

11

10

9

8

–

–

–

–

–

–

TIMEVSEL

7

6

5

4

3

2

1

0

–

–

–

–

–

–

UPDCAL

UPDTIM

0

MINUTE

Minute change

1

HOUR

Hour change

2

MIDNIGHT

Every day at midnight

3

NOON

Every day at noon