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SH7721 Datasheet(PDF) 600 Page - Renesas Technology Corp |
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SH7721 Datasheet(HTML) 600 Page - Renesas Technology Corp |
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600 / 1524 page  Section 15 16-Bit Timer Pulse Unit (TPU) Rev. 3.00 Jan. 18, 2008 Page 538 of 1458 REJ09B0033-0300 (2) Examples of PWM Mode Operation Figure 15.12 shows an example of PWM mode operation. In this example, TGRB 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 TGRA output value. In this case, the value set in TGRB is used as the period, and the value set in TGRA as the duty. TCNT value TGRB H'0000 TPU_TO pin Time TGRA Counter cleared by TGRB compare match Figure 15.12 Example of PWM Mode Operation (1) Figure 15.13 shows examples of PWM waveform output with 0% duty and 100% duty in PWM mode. TCNT TGRA=1 TGRA=2 TGRA=3 ↑ Rewrite timing for TGRA Period: TGRB=2 0 2 1 20 TGRA=0 Figure 15.13 Examples of PWM Mode Operation (2) |
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