Datasheet

Section 12 Timer Z
Rev. 4.00 Mar. 15, 2006 Page 195 of 556
REJ09B0026-0400
12.4.3 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 12.16 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 12.16 Example of Input Capture Operation Setting Procedure