Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD 数据表
产品代码
AT32UC3A3-XPLD
439
32072H–AVR32–10/2012
AT32UC3A3
21.8.13
Write Protection Control Register
Register Name:
WPCR
Access Type:
Read-write
Offset:
0xE4
Reset Value:
0x00000000
•
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
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