When programming with the ICP Programming Tool, click the "Setting" button under the Config Bits to open the Chip Options. In the chip options, user can enable the “Watchdog” option, as shown below:

After the "Watchdog" is enabled, the user does not need to initialize the watchdog. After chip reset (except System Reset and CPU Reset), the following initialization is automatically performed for the watchdog:

Set WDTEN (WDT Enable) andRSTEN(WDTTime-outReset Enable Control) to 1.
Set WDTSEL (Watchdog Timer Clock Source Selection) to 111, i.e. 10 kHz LIRC.
TOUTSEL (WDT Time-out Interval Selection) is preset 111, i.e. the time-out time is 218 * WDT_CLK (about 26.214 seconds)

The user needs to clear the time-out flag after the watchdog timer triggers a time-out event; otherwise it will cause watchdog reset (WDT Reset). The user can also modify WDTSEL and TOUTSEL in the program, and select the appropriate clock source and time-out.

Products:	Microcontrollers ,Arm Cortex-M0 MCUs ,M0518 Series ,M0519 Series ,Nano100/102 Base Series ,Nano103 Base Series ,Nano110/112 LCD Series ,Nano120 USB Series ,Nano130 Advanced Series ,Arm Cortex-M4 MCUs ,M451 Base Series ,M451M Series ,M452 USB Series ,M453 CAN Series ,M4TK Touch Key Series ,NUC442/472 Series
Applications:
Function:	Peripherals,Timer and PWM,Watchdog Timer (WDT),Software and Tools,Nu Tools,In Circuit Programming (ICP) Tool

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When programming with the ICP Programming Tool, does user need to initialize watchdog in the program after enabling the "Watchdog" option in the Configuration Bits setting? Does user need to clear the time-out flag? Issue Date：2017-04-24

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