H8SSLASH2218 datasheet(363/750 Pages) RENESAS

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Section 9 16-Bit Timer Pulse Unit (TPU)

Rev.6.00 Jun. 03, 2008 Page 315 of 698

REJ09B0074-0600

Examples of PWM Mode Operation: Figure 9.22 shows an example of PWM mode 1 operation.

In this example, TGRA compare match is set as the TCNT clearing source, 0 is set for the TGRA

initial output value and output value, and 1 is set as the TGRB output value. In this case, the value

set in TGRA is used as the period, and the values set in TGRB registers as the duty.

TCNT value

TGRA

H'0000

TIOCA

Time

TGRB

Counter cleared by

TGRA compare match

Figure 9.22 Example of PWM Mode Operation (1)

Figure 9.23 shows an example of PWM mode 2 operation. In this example, synchronous operation

is designated for channels 0 and 1, TGRB_1 compare match is set as the TCNT clearing source,

and 0 is set for the initial output value and 1 for the output value of the other TGR registers

(TGRA_0 to TGRD_0, TGRA_1), to output a 5-phase PWM waveform. In this case, the value set

in TGRB_1 is used as the cycle, and the values set in the other TGRs as the duty.

TCNT value

TGRB_1

H'0000

TIOCA0

Counter cleared by

TGRB_1 compare match

Time

TGRA_1

TGRD_0

TGRC_0

TGRB_0

TGRA_0

TIOCB0

TIOCC0

TIOCD0

TIOCA1

Figure 9.23 Example of PWM Mode Operation (2)

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