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8 years, 5 months ago.
Maximum PWM frequency of STM - F334R8?
Hi, I can't find anything that indicates what the maximum PWM frequency is that the STMF334R8 can output on its pins? Also what the impedance might be on these PWM output pins.
1 Answer
8 years, 5 months ago.
Generally mbed PWM goes up to 1MHz (1us resolution). The pulsewidth resolution is also 1us, so the real PWM frequency you can get if you want to use the pulsewidth command is much lower. The duty cycle function can go sub-us, so that should work at 1MHz.
And in general search on the FastPWM lib: This goes on all supported targets up till half the clock frequency (one clock cycle high, one cycle low).
For impedance you will need to check the datasheet.