https://devzone.nordicsemi.com/f/nordic-q-a/8961/data-acquisition-on-a-2mhz-clockHi folks, I have a 2MHz clock (call it DRDY) coming into my nRF51 on one of the GPIO pins (call it AFE_DRDY). I need to read an external AFE chip on every falling edge. So, I thought I would use the GPIOTE driver, as such: // Configure DRDY nrf_drv_gpiote_in_config_ten-USTelligent Community 13Mon, 31 Aug 2015 09:46:04 GMThttps://devzone.nordicsemi.com/thread/33006?ContentTypeID=1Mon, 31 Aug 2015 09:46:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:83757ae1-ba2e-4fc0-8f88-00e6a65673e5Susheel Nuguru<p>I see that it was you who posted that question and I also see that RK has given concluding explanation. The conclusion is that the interrupt handler cannot be called with 2MHz frequency on Coretex M0</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/33005?ContentTypeID=1Mon, 31 Aug 2015 09:43:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:db1b349d-0dba-44ab-8372-fafc5f5521c1Susheel Nuguru<p>no it cannot. @RK has given a very nice explanation of why <a href="https://devzone.nordicsemi.com/question/49767/maximum-interrupt-frequency-gpio-vs-gpiote/">here</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/33004?ContentTypeID=1Sat, 29 Aug 2015 03:15:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d1ed1817-6f49-4b01-9386-a4dd35267c5aujwal<p>Hmm, if I burst the DRDY clock or slow it down, I see something. I am wondering if the nRF51 cannot handle interrupts at that high rate?</p><div style="clear:both;"></div>