Datasheet

Section 14 Timer Z
Rev. 3.00 Mar. 15, 2006 Page 244 of 526
REJ09B0060-0300
14.4.3 Input Capture Function
The TCNT value can be transferred to GR on detection of the input edge of the input
capture/output compare pin (FTIOA, FTIOB, FTIOC, or FTIOD). Rising edge, falling edge, or
both edges can be selected as the detected edge. When the input capture function is used, the pulse
width or period can be measured.
Figure 14.16 shows an example of the input capture operation setting procedure.
[1] Designate GR as an input capture register by
means of TIOR, and select rising edge, falling
edge, or both edges as the input edge of the
input capture signal.
[2] Set the STR bit in TSTR to 1 to start the TCNT
counter operation.
[1]
Input selection
Select input edge of
input capture
[2]
Start counter operation
<Input capture operation>
Figure 14.16 Example of Input Capture Operation Setting Procedure