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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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M38043FDHKP 데이터시트(PDF) 246 Page - Renesas Technology Corp |
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M38043FDHKP 데이터시트(HTML) 246 Page - Renesas Technology Corp |
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246 / 387 page  2-122 APPLICATION 2.6 PWM Rev.1.00 Jan 14, 2005 REJ09B0212-0100Z 3804 Group (Spec.H) By setting the related registers as shown by Figure 2.6.7, PWM waveforms are output to the externals. This PWM output is integrated through the low pass filter, and that converted into DC signals is used for control of the motor. Figure 2.6.9 shows control procedure. Fig. 2.6.9 Control procedure 2.6.4 Notes on PWM The PWM starts after the PWM enable bit is set to enable and “L” level is output from the PWM pin. The length of this “L“ level output is as follows: (s) (Count source selection bit = 0, where n is the value set in the prescaler) (s) (Count source selection bit = 1, where n is the value set in the prescaler) n + 1 2 • f(XIN) n + 1 f(XIN) ~ ~ P5 (Address : 000A16), bit6 P5D (Address : 000B16) PREPWM (Address : 002C16) PWM (Address : 002D16) PWMCON (Address : 002B16) • “L” level output from P56/PWM pin 0 X1XXXXXX2 1 100 XXXXXX012 • PWM period setting • “H” level width of PWM setting • PWM count source selected, PWM output enabled • X : This bit is not used here. Set it to “0” or “1” arbitrarily. ~ ~ |
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