HD6432351 datasheet(495/1025 Pages) RENESAS

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Section 10 16-Bit Timer Pulse Unit (TPU)

Rev. 3.00 Sep 15, 2006 page 461 of 988

REJ09B0330-0300

Example of input capture operation: Figure 10.13 shows an example of input capture operation.

In this example both rising and falling edges have been selected as the TIOCA pin input capture

input edge, falling edge has been selected as the TIOCB pin input capture input edge, and counter

clearing by TGRB input capture has been designated for TCNT.

TCNT value

H'0180

H'0000

TIOCA

TGRA

Time

H'0010

H'0005

Counter cleared by TIOCB

input (falling edge)

H'0160

H'0005

H'0160

H'0010

TGRB

H'0180

TIOCB

Figure 10.13 Example of Input Capture Operation

10.4.3

Synchronous Operation

In synchronous operation, the values in a number of TCNT counters can be rewritten

simultaneously (synchronous presetting). Also, a number of TCNT counters can be cleared

simultaneously by making the appropriate setting in TCR (synchronous clearing).

Synchronous operation enables TGR to be incremented with respect to a single time base.

Channels 0 to 5 can all be designated for synchronous operation.

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