
92
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
16.4
Watchdog Timer (WDT) User Interface
16.4.1
Watchdog Timer Control Register
Register Name:
WDT_CR
Access Type:
Write-only
WDRSTT: Watchdog Restart
0: No effect.
1: Restarts the Watchdog.
KEY: Password
Should be written at value 0xA5. Writing any other value in this field aborts the write operation.
Table 16-1.
Register Mapping
Offset
Register
Name
Access
Reset
0x00
Control Register
WDT_CR
Write-only
-
0x04
Mode Register
WDT_MR
Read-write Once
0x3FFF_2FFF
0x08
Status Register
WDT_SR
Read-only
0x0000_0000
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
––––––––
76543210
–––––––
WDRSTT