Renesas H8S/2100 Series Hardware Manual page 293

6-bit single-chip microcomputer

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Examples of PWM Mode Operation

Figure 10.22 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.

Figure 10.23 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.

Figure 10.22 Example of PWM Mode Operation (1)

Figure 10.23 Example of PWM Mode Operation (2)

Section 10 16-Bit Timer Pulse Unit (TPU)

Counter cleared by

TGRA compare match

Counter cleared by

TGRB_1 compare match

Rev. 1.00 May 09, 2008 Page 267 of 954

REJ09B0462-0100