AAEON AEC-6860 - Manual (Page 54)

E m b e d d e d C o n t r o l l e r A E C - 6 8 6 0
Appendix A Programming the Watchdog Timer A-4
WatchDog Timer Configuration Registers
Configure Control (Index=02h)
This register is write only. Its values are not sticky; that is to
say, a hardware reset will automatically clear the bits, and
does not require the software to clear them.