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nRF52 clock output

I need a clock output (> 12MHz) from nRF52 for interfacing a sensor.

From the below post, looks like Max possible output is 8MHz since peripheral clock is limited to 16MHz.

devzone.nordicsemi.com/.../

Can I enable ETM and get 16MHz from TRACECLK (pin 20)? I will not use TRACEDATA[] and ensure that those pins are left open.

Is there any alternative method for my requirement?

Thanks.

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