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Operation, 1 capture timing, interrupt timing – FUJITSU MB91460 SERIES FR60 User Manual

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Chapter 36 Input Capture

5.Operation

5. Operation

The input capture operation is described below.

5.1 Capture Timing, Interrupt Timing

(1)

Rising edge of input signal

(2)

Internal signal generated by edge detection (synchronous with peripheral clock)

(3)

Store free-run timer value in capture register (capture)

(4)

Input capture interrupt generation (ICU0-ICU1=“1”)

Reset

Interrupt
request

Free-run
timer 0
count

Time

FFFFh

0000 h

Peripheral
clock (CLKP)

Input capture

Active edge

N

N+1

Free-run timer 0

N+1

Capture register

Interrupt
request

Input
capture

(1)

(2)

(3)

(4)

N

N+1

N+1

N+1