Datasheet

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
76543210
-------EN