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13.5.2
16-bit Input Capture Operation
In 16-bit input capture operation, an interrupt can be generated upon detection of at the
specified edge, fetching the 16-bit free-run timer value and writing it to the capture
register.
■ Sample of Input Capture Fetch Timing
•
Capture 0: Rising edge
•
Capture 1: Falling edge
•
Capture example: Both edges
Counter value
FFFF
H
BFFF
H
7FFF
H
3FFF
H
0000
H
Reset
IN0
IN1
IN example
Capture 0
Capture 1
Capture
example
Capture 0
interrupt
Capture 1
interrupt
Capture
interrupt
Figure 13.5-5 Sample of Input Capture Fetch Timing
Undefined
3FFF
H
Undefined
Undefined
CHAPTER 13 16-BIT I/O TIMER
BFFF
3FFF
H
H
Time
7FFF
H
221
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