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よくある質問 / When using PWM/BPWM in the NuMicro® NUC131 and M0518 series, why can’t PWM0/1 channels (0, 1), (2, 3), (4, 5) be set to two different frequencies? Can each of the BPWM0/1 channels (0, 1, 2, 3, 4, 5) be set to a different frequency?
https://www.nuvoton.com.cn/support/technical-support/faq/d63be432-04f1-11ea-b113-05daf7eedf03/
When using PWM/BPWM in the NuMicro® NUC131 and M0518 series, why can’t PWM0/1 channels (0, 1), (2, 3), (4, 5) be set to two different frequencies? Can each of the BPWM0/1 channels (0, 1, 2, 3, 4, 5) be set to a different frequency? 1463645078874 This is because the PWM0 / 1 channels (0, 1), (2, 3), (4, 5) share the same prescaler as well as the same counter. Thus, the output frequency cannot be set to a different value, but the duty cycle can be set individually. A block diagram is shown below, wherein channels (0, 1) share Counter0_1, channels (2, 3) share Counter2_3, and channels (4, 5) share Counter4_5: The BPWM channels (0, 1, 2, 3, 4, 5) share the same prescaler as well as the same counter. Thus, the output frequency cannot be set to a different value, but the duty cycle can be set individually. A block diagram is shown below, wherein channels (0, 1, 2, 3, 4, 5) share Counter0_1: Thus, in applications, a user cannot set PWM0 frequency of 60Hz and duty cycle of 50% to control LED,
NuMicro M0 Board Support Package
https://www.nuvoton.com.cn/tool-and-software/bsp-and-example-code/board-support-package/numicro-m0-board-support-package/
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