Hello We use an advanced timer with an internal clock of 16 MHz in input capture mode We give a pwm signal to tim1 We want Measure the D.Cycle of each pulse Question: What is the maximum frequency that can be given to the input?

[MGhob.1]

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[Tesla DeLorean]

Not a STM8​ user but presume it would depend on the resolution/granularity you expect in the results.

For useful duty cycle measurements, perhaps a few hundred KHz.

If servicing interrupts, likely bound by those saturating too.​