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SH7041A датащи(PDF) 402 Page - Renesas Technology Corp |
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SH7041A датащи(HTML) 402 Page - Renesas Technology Corp |
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402 / 923 page ![]() 364 • Initial output in complementary PWM mode In complementary PWM mode, the initial output is determined by the setting of bits OLSN and OLSP in the timer output control register (TOCR). This initial output is the PWM pulse non-active level, and is output from when complementary PWM mode is set with the timer mode register (TMDR) until TCNT4 exceeds the value set in the dead time register (TDDR). Figure 12.43 shows an example of the initial output in complementary PWM mode. An example of the waveform when the initial PWM duty value is smaller than the TDDR value is shown in figure 12.44. Timer output control register settings OLSN bit: 0 (initial output: high; active level: low) OLSP bit: 0 (initial output: high; active level: low) TCNT3, 4 value TGR4A TDDR TCNT3 TCNT4 Initial output Dead time Time Active level Active level TCNT3, 4 count start (TSTR setting) Complementary PWM mode (TMDR setting) Positive phase output Negative phase output Figure 12.43 Example of Initial Output in Complementary PWM Mode (1) |
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