What should user do if the WDT (Watchdog Timer) Reset of the NUC505 does not work properly?

[a_ziliu]

When the WDT Reset occurs in the NUC505, the hardware mechanism of the WDT will pull the voltage of reset pin low to trigger reset; if the voltage of the Reset pin cannot be pulled low, the reset will not be triggered normally, and a hardfault may occur. Therefore, it is necessary to modify the circuit design. Refer to the design of the NUC505 development board for the circuit of the reset pin using the pull-up resistance value of 1kΩ, as shown in the following circuit diagram.