Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
94
32072H–AVR32–10/2012
AT32UC3A3
9.6.1
Control Register
Name: CTRL
Access Type:
Read/Write
Offset:
0x00
Reset Value:
0x00000000
•
KEY: Write protection key
This field must be written twice, first with key value 0x55, then 0xAA, for a write operation to be effective.
This field always reads as zero.
•
PSEL: Prescale Select
PSEL is used as watchdog timeout period.
•
EN: WDT Enable
1: WDT is enabled.
0: WDT is disabled.
31
30
29
28
27
26
25
24
KEY
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
PSEL
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
EN