Watchdog Timer Demo Program - Aaeon SBC-357 Manual

1. Set index 37h bit 6 = o to disable the timer.
2. Write the desired counter value to 3Bh, 3Ah, 39h.
3. Set index 37h bit 6 = 1 to enable the timer.
4. When counter reaches the setting value, the timer will
generate signal setting by index 38h bit [7:4]
D
MSB
c o u t n e r
3 B h
7 . . . . . . D 0 D
[ D : 7 ] 4
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
Appendix A Watchdog Timer Demo Program
3 A h
7 . . . . . . D 0
t m i e e o t u s g i n l a
R s e r e d v
R I Q 3
R I Q 4
R I Q 5
R I Q 6
R I Q 7
R I Q 9
R I Q 1 0
R I Q 1 1
R I Q 1 2
R I Q 1 4
R I Q 1 5
N M I
S s y e t m r s e t e
R s e r e e v d
R s e r e e v d
3 9 h
D 7 . . . . . . D 0
LSB
63