HD6432351 datasheet(494/1025 Pages) RENESAS

494 / 1025 page

Section 10 16-Bit Timer Pulse Unit (TPU)

Rev. 3.00 Sep 15, 2006 page 460 of 988

REJ09B0330-0300

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 detected 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.

Example of input capture operation setting procedure: Figure 10.12 shows an example of the

input capture operation setting procedure.

Select input capture input

Input selection

Start count

[1]

[2]

[1] Designate TGR as an input capture register by

means of TIOR, and select rising edge, falling

edge, or both edges as the input capture source

and input signal edge.

[2] Set the CST bit in TSTR to 1 to start the count

operation.

Figure 10.12 Example of Input Capture Operation Setting Procedure

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