Operation Of Input Capture - Fujitsu MB90480 Series Hardware Manual

CHAPTER 12 16-BIT INPUT/OUTPUT TIMER

12.5.3 Operation of input capture

Input capture generates interrupt request by reading the free-running timer value into
the capture register when the specified valid edge is detected.
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Example of input capture timing
Figure 12.5-5" shows an example of input capture timing.
Counter value
FFFF
BFFF
7FFF
3FFF
0000
Reset
Example of IN
Capture 0
Capture 1
Example of capture
Capture 0 interrupt
Capture 1 interrupt
Example-of-capture
interrupt
242
Figure 12.5-5 Example of input capture timing
H
H
H
H
H
IN0
IN1
Unspecified
Unspecified
Unspecified
3FFF
H
7FFF
7FFF
BFFF
H
Time
H
H