Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD 데이터 시트
제품 코드
AT32UC3A3-XPLD
619
32072H–AVR32–10/2012
AT32UC3A3
25.7.18
Write Protect Mode Register
Register Name:
WPMR
Access Type:
Read-write
Offset:
0xE4
Reset Value:
• WPKEY: Write Protect KEY
Has to be written to 0x555341 (“USA” in ASCII) in order to successfully write WPEN. This bit always reads as zero. Writing the
correct key to this field clears WPSR.WPVSRC and WPSR.WPVS.
• WPEN: Write Protect Enable
0: Write protection disabled.
1: Write protection enabled.
Protects the registers:
•
•
•
•
•
•
•
31
30
29
28
27
26
25
24
WPKEY[23:16]
23
22
21
20
19
18
17
16
WPKEY[15:8]
15
14
13
12
11
10
9
8
WPKEY[7:0]
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
WPEN