What’s the highest sampling rate of a pin/peripheral on a KL15?

[ryanlush]

What I’m trying to do is sample a digital signal with an I/O pin. I want to reject low frequency pulses and get the leading edge of the high frequency pulses. I understand Nyquist so I need to know what pin/peripheral is going to give me my highest sampling rate? I can change pins but I really can’t add any more hardware to solve the problem. I only need to sample the leading edge.

[kerryzhou]

Hi Ryan Lush,

   You can use the TPM capture function to detect the input pulse.

TPM clock source can be found in this picture:

So,if your TPM clock is 48Mhz, you can input 48M/4=12Mhz.

Wish it helps you!

Have a great day,
Kerry

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