Enabling watchdog timer system restart and waiting in a loop until reset is a legitimate way of SW resetting the µC as is using watchdog for catching µC's misbehavior which can be caused by various reasons. The WDT205 watchdog timer, a solution that plugs into an internal USB port meeting the Intel Front Panel I/O Connectivity Design Guide for a USB port. The host computer or application must communicate with the WDT205 by sending a message over the USB port.
A watchdog timer is a piece of hardware that can be used to automatically detect software anomalies and reset the processor if any occur. Generally speaking, a watchdog timer is based on a counter that counts down from some initial value to zero. The embedded software selects the counter's initial value and periodically restarts it.
The TPS3430 is a standalone window watchdog timer with programmable watchdog window and programmable watchdog reset delay for a wide variety of applications. The TPS3430 window watchdog achieves 15% timing accuracy (-40°C to +125°C), 2.5% timing accuracy (typical at 25°C) and the watchdog output (WDO) reset delay can be set by