Datasheet

Section 10 16-Bit Timer Pulse Unit (TPU)
Rev.6.00 Mar. 18, 2009 Page 444 of 980
REJ09B0050-0600
Input Capture Function: The TCNT value can be transferred to TGR on detection of the TIOC
pin input edge.
Rising edge, falling edge, or both edges can be selected as the detection edge. For channels 0, 1, 3,
and 4, it is also possible to specify another channel’s counter input clock or compare match signal
as the input capture source.
Note: When another channel’s counter input clock is used as the input capture input for channels
0 and 3, φ/1 should not be selected as the counter input clock used for input capture input.
Input capture will not be generated if φ/1 is selected.
1. Example of setting procedure for input capture operation
Figure 10.8 shows an example of the setting procedure for input capture operation.
Select input capture input
Input selection
Start count
<Input capture operation>
[1]
[2]
[1] Designate TGR as an input capture register by
means of TIOR, and select the input capture
source and input signal edge (rising edge, falling
edge, or both edges).
[2] Set the CST bit in TSTR to 1 to start the count
operation.
Figure 10.8 Example of Setting Procedure for Input Capture Operation