Data Sheet

228
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
17.8.8 Clear
Name: CLEAR
Offset: 0x8
Reset: 0x00
Property: Write-Protected, Write-Synchronized
z Bits 7:0 – CLEAR[7:0]: Watchdog Clear
Writing 0xA5 to this register will clear the Watchdog Timer and the watchdog time-out period is restarted. Writing
any other value will issue an immediate system reset.
Table 17-7. Watchdog Clear
Bit 76543210
CLEAR[7:0]
AccessWWWWWWWW
Reset00000000
CLEAR[7:0] Name Description
0x0-0xA4 Reserved
0xA5 KEY Clear Key
0xA6-0xFF Reserved