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H8/3021 Datasheet(PDF) 269 Page - Renesas Technology Corp |
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H8/3021 Datasheet(HTML) 269 Page - Renesas Technology Corp |
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269 / 712 page ![]() 8. 16-Bit Integrated Timer Unit (ITU) Rev.2.00 Mar. 22, 2007 Page 245 of 684 REJ09B0352-0200 Example of Reset-Synchronized PWM Mode: Figure 8.32 shows an example of operation in reset-synchronized PWM mode. TCNT3 operates as an up-counter in this mode. TCNT4 operates independently, detached from GRA4 and GRB4. When TCNT3 matches GRA3, TCNT3 is cleared and resumes counting from H'0000. The PWM outputs toggle at compare match with GRB3, GRA4, GRB4, and TCNT3 respectively, and when the counter is cleared. TCNT3 value Counter cleared at compare match with GRA3 Time GRA3 GRB3 GRA4 GRB4 H'0000 TIOCA3 TIOCB3 TIOCA4 TOCXA4 TIOCB4 TOCXB4 Figure 8.32 Operation in Reset-Synchronized PWM Mode (Example) (when OLS3 = OLS4 = 1) For the settings and operation when reset-synchronized PWM mode and buffer mode are both selected, see section 8.4.8, Buffering. |
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