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PWM with 1.5 MHz with STM32F411 Nucleo-Board

Question asked by breuer.mirco.001 on Aug 12, 2015
Latest reply on Aug 12, 2015 by Clive One
Hello,
i'm glad to be a member here in this forum. At the moment i am thinking about to buy a STM32F411 Nucleo-Board.  In this case i would like to ask you some question about this Board. I read many different articles about "how to change the clock frequency" but i couldn't find my answers. I would like to produce a PWM with a clock frequency of 1.5 MHz.

- Is this possible with the STM32F411 Nucleo-Board? If yes, what is the maximum resolution? 2-Bit?4-Bit? or higher? Are there any tables in which the output frequency in comparison with the resolution is?

- If i want to increase the clock frequency for example up to 100 MHZ. Do i have to include an external crystal? Or is it possible to change the internal PLL via software? If yes, how can i do that?



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