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ST92141 数据表(PDF) 118 Page - STMicroelectronics |
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ST92141 数据表(HTML) 118 Page - STMicroelectronics |
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118 / 179 page ![]() 118/179 ST92141 - 3-PHASE INDUCTION MOTOR CONTROLLER (IMC) INDUCTION MOTOR CONTROLLER (Cont’d) If the 11-bit Compare register value is greater than the extended Compare 0 Register (the 11th bit is set to ‘0’), the corresponding PWM output signal is held at ‘1’. If the 11-bit Compare register value is 0, the corre- sponding PWM output signal is held at ‘0’. Figure 65 shows some Zerocentered PWM wave- forms in an example where the Compare 0 register value = 8. Figure 65. Zerocentered PWM Waveforms (Compare 0 Register = 8) 012345678765432101 1 2 3 ‘1’ 4 ‘0’ 1 Compare Register value = 4 2 Compare Register value = 7 3 Compare Register value > = 8 4 Compare Register value = 0 9 |
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