5 8 MIC-3357 User's ManualA.1 Programming the Watchdog TimerTo program the watchdog timer, you must write a program which writesa value to I/O port address 444 (hex). This output value represents timeinterval. The value range is from 01 (hex) to 3F (hex), and the relatedtime interval is from 1 sec. to 63 sec.Data Time Interval01 1 sec.02 2 sec.03 3 sec.04 4 sec.ï ïï ïï ï3F 63 sec.
