Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

 387

SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

MATRIX_WPMR

0x400E03E4

Read-write  

For more details on MATRIX_WPMR, refer to 

0 = Disables the Write Protect if WPKEY corresponds to 0x4D4154 (“MAT” in ASCII).

1 = Enables the Write Protect if WPKEY corresponds to 0x4D4154 (“MAT” in ASCII). 

Protects the entire MATRIX address space from address offset 0x000 to 0x1FC.

• WPKEY: Write Protect KEY (Write-only)

Should be written at value 0x4D4154 (“MAT” in ASCII). Writing any other value in this field aborts the write operation of the WPEN 
bit. Always reads as 0.

31

30

29

28

27

26

25

24

WPKEY

23

22

21

20

19

18

17

16

WPKEY

15

14

13

12

11

10

9

8

WPKEY

7

6

5

4

3

2

1

0

–

–

–

–

–

–

–

WPEN