SAM4L Datasheet, PDF (693/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

26.8.13 Write Protection Control Register
Register Name:
WPCR
Access Type:
Read-write
Offset:
0xE4
Reset Value:
0x00000000
ATSAM4L4/L2
31
30
29
28
27
26
25
24
SPIWPKEY[23:16]
23
22
21
20
19
18
17
16
SPIWPKEY[15:8]
15
14
13
12
11
10
9
8
SPIWPKEY[7:0]
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
SPIWPEN
• SPIWPKEY: SPI Write Protection Key Password
If a value is written in SPIWPEN, the value is taken into account only if SPIWPKEY is written with “SPI” (SPI written in ASCII
Code, i.e. 0x535049 in hexadecimal).
• SPIWPEN: SPI Write Protection Enable
1: The Write Protection is Enabled.
0: The Write Protection is Disabled.
42023C–SAM–02/2013
693