User`s manual

PICO822 Intel
®
Atom
TM
E620T/E680T All-In-One Pico-ITX Board
Watchdog Timer 107
Appendix B
Watchdog Timer
About Watchdog Timer
After the system stops working for a while, it can be auto-reset by the watchdog timer. The
integrated watchdog timer can be set up in the system reset mode by program.
How to Use Watchdog Timer
Start

1. Enable Configuration:
-O 2E 87
-O 2E 87

2. Select Logic device:
-O 2E 07
-O 2F 07

3. Enable WDT:
-O 2E 30
-O 2F 01

4. Activate WDT:
-O 2E F0
-O 2F 80

5. Set base timer:
-O 2E F6
-O 2F 0A ; Set reset time. Ex: A->reset time=10sec

6. Set timer unit (second or minute):
-O 2E F5
-O 2F 71 ; Set timer unit.
; Ex: 1->timer unit=second, 9->timer unit=minute