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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M32C/8A датащи(PDF) 210 Page - Renesas Technology Corp |
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M32C/8A датащи(HTML) 210 Page - Renesas Technology Corp |
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210 / 372 page  M32C/8A Group 16. Three-Phase Motor Control Timer Function Rev.1.00 Jul 15, 2007 Page 193 of 352 REJ09B0385-0100 16.2 Sawtooth Wave Modulation Mode In sawtooth wave modulation mode, one cycle of carrier waveform consists of one timer B2 underflow cycle. A timer Ai one-shot pulse (i = 1, 2, and 4) is generated by using a timer B2 underflow signal as a trigger. One timer Ai one-shot pulse is used to output one cycle of the PWM waveform. Table 16.4 lists specifications and settings of sawtooth wave modulation mode. Table 16.4 Specifications and Settings of Sawtooth Wave Modulation Mode m: Value of the TB2 register ak: Value set to the TAi register at k-th time. Item Three-Phase Mode 0 INV06 bit 1 INV11 bit 0 Bits INV01 and INV00 00b or 01b PWCON bit 0 ICTB2 register n INV16 bit 0 Carrier wave cycle Upper arm active level output width Timer B2 interrupt generation timing Every n-th timer B2 underflow Timer B2 reload timing Timer B2 underflow Transfer timing from IDBp register to three-phase output shift register (p = 0, 1) Every time a transfer trigger occurs. Dead time timer start timing At the falling edge of the one-shot pulse of timer A1, A2 and A4 1 f1 × (m + 1) × ak 1 f1 |
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