Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD 数据表

293

SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

RTT_SR

0x400E143C

Read-only

0: The Real-time Alarm has not occurred since the last read of RTT_SR.
1: The Real-time Alarm occurred since the last read of RTT_SR.

0: No prescaler roll-over occurred since the last read of the RTT_SR.
1: Prescaler roll-over occurred since the last read of the RTT_SR.

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

–

–

–

–

–

–

RTTINC

ALMS