GMS81C5108
This value is loaded to CDR0
n
T0
n-1
9
8
7
6
5
4
3
2
1
0
TIME
Ext. INT0 Pin
Interrupt Request
(INT0IF)
Interrupt Interval Period
Ext. INT0 Pin
Interrupt Request
(INT0IF)
Delay
Clear & Start
Capture
(Timer Stop)
Figure 12-8 Input Capture Operation
Ext. INT0 Pin
Interrupt Request
(INT0IF)
Interrupt Interval Period = FF + 01 + FF +01 + 13 = 213
H
H
H
H
H
H
Interrupt Request
(T0IF)
FF
H
FF
H
T0
13
H
00
H
00
H
Figure 12-9 Excess Timer Overflow in Capture Mode
52
JUNE 2001 Ver 1.0