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What is the maximum frequency of STM32F4's PWM?

Question asked by just4you on May 26, 2015
Latest reply on May 26, 2015 by just4you
I would like to use the PWM as clock source for other device.
so I want to know the maximum frequency of PWM.

As faster the frequency of PWM signal increase,
the more the shape of PWM signal become to triangle signal.

Why this phenomenon is happen?

TIM2_CH1(PA5)_8.4KHz.PNG
TIM2_CH1(PA5) PWM - 8.4KHz

TIM2_CH1(PA5)_84KHzA.PNG
TIM2_CH1(PA5)_84KHzB.PNG
TIM2_CH1(PA5) PWM - 84KHz

TIM2_CH1(PA5)_840KHzA.png
TIM2_CH1(PA5)_840KHzB.PNG
TIM2_CH1(PA5) PWM - 840KHz

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