H8S2245 datasheet(367/818 Pages) RENESAS

Part #	H8S2245

Description	Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series

PDF	818 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

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Section 9 16-Bit Timer Pulse Unit (TPU)

Rev.3.00 Mar. 26, 2007 Page 325 of 772

REJ09B0355-0300

Example of input capture operation: Figure 9.13 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 9.13 Example of Input Capture Operation

9.4.3

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 2 can all be designated for synchronous operation.

H8S2245 Datasheet(PDF) 367 Page - Renesas Technology Corp