Atmel SAM4S Xplained Pro Starter Kit Atmel ATSAM4S-XSTK ATSAM4S-XSTK Data Sheet
Product codes
ATSAM4S-XSTK
627
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
32.8.10 SPI Write Protection Mode Register
Name:
SPI_WPMR
Address:
0x400080E4
Access:
Read-write
• WPEN: Write Protection Enable
0: The Write Protection is Disabled
1: The Write Protection is Enabled
• WPKEY: Write Protection Key Password
If a value is written in WPEN, the value is taken into account only if WPKEY is written with “SPI” (SPI written in ASCII Code, ie
0x535049 in hexadecimal).
0x535049 in hexadecimal).
List of the write-protected registers:
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