Timer in low power counter mode outputs 0 when input signal greater than 4MHzhttps://devzone.nordicsemi.com/f/nordic-q-a/83905/timer-in-low-power-counter-mode-outputs-0-when-input-signal-greater-than-4mhzHi, In an application with a nrf52840, we measure the frequency by counting rising edge with PPI linking GPIOTE EVENTS IN and TIMER TASK COUNT GPIOTE.EVENTS_IN -&gt; PPI -&gt; TIMER.TASK_COUNT Every 10 ms we capture the timer task count value and clearen-USTelligent Community 13Mon, 24 Jan 2022 16:53:23 GMTRE: Timer in low power counter mode outputs 0 when input signal greater than 4MHzhttps://devzone.nordicsemi.com/thread/349354?ContentTypeID=1Mon, 24 Jan 2022 16:53:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9875ed93-02e0-4d95-883b-da9a6a49b41aJ&#248;rgen Holmefjord<p>Hi,</p> <p>See <a href="https://devzone.nordicsemi.com/f/nordic-q-a/23514/max-freqency-gpiote-event-ppi-to-counter/92367#92367">this post</a>. As correctly stated by <a href="https://devzone.nordicsemi.com/members/turboj">Turbo J</a>, the maximum theoretical frequency is 4MHz.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>RE: Timer in low power counter mode outputs 0 when input signal greater than 4MHzhttps://devzone.nordicsemi.com/thread/348868?ContentTypeID=1Fri, 21 Jan 2022 09:40:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7b458abb-b953-441f-be93-a292a463a76eTurbo J<p>Most of the peripherials in NRF52x run on the 16MHz clock, and you probably need to divide by 4 for the GPIOTE edge detector.</p> <p>Not documented in the PS, though.</p><div style="clear:both;"></div>