Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
464
25.12.7 Write Protect Mode Register
Name:
MATRIX_WPMR
Address:
0x400E03E4
Access:
Read-write
.
The protected registers are:
WPEN: Write Protect Enable
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 Bus Matrix address space from address offset 0x000 to 0x1FC.
WPKEY: Write Protect KEY (Write-only)
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
Value
Name
Description
0x4D4154
PASSWD
Writing any other value in this field aborts the write operation
of the WPEN bit.
of the WPEN bit.
Always reads as 0.