AT32UC3L0256_14 Datasheet, PDF (463/852 Pages) ATMEL Corporation – Read-modify-write Instructions and Atomic Bit Manipulation

20.8.13 Write Protection Control Register
Register Name:
WPCR
Access Type:
Read-write
Offset:
0xE4
Reset Value:
0x00000000
AT32UC3L0128/256
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
32145C–06/2013
463