SAM4L Datasheet, PDF (486/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

20.6.2 Clear Register
Name:
CLR
Access Type:
Write-only
Offset:
0x004
Reset Value:
0x00000000
ATSAM4L4/L2
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
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
WDTCLR
When the Watchdog Timer is enabled, this Register must be periodically written within the window time frame or within the
watchdog timeout period, to prevent a watchdog reset.
• KEY
This field must be written twice, first with key value 0x55, then 0xAA, for a write operation to be effective.
• WDTCLR: Watchdog Clear
Writing a zero to this bit has no effect.
Writing a one to this bit clears the WDT counter.
42023C–SAM–02/2013
486