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

274

MPU_RNR

Access: Read/Write

Reset: 0x00000800 

The MPU_RNR selects which memory region is referenced by the MPU_RBAR and MPU_RASRs.



Indicates the MPU region referenced by the MPU_RBAR and MPU_RASRs.

The MPU supports 8 memory regions, so the permitted values of this field are 0–7.

Normally, the required region number is written to this register before accessing the MPU_RBAR or MPU_RASR. How-
ever, the region number can be changed by writing to the MPU_RBAR with the VALID bit set to 1; see 

. This write updates the value of the REGION field.

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

REGION