https://devzone.nordicsemi.com/f/nordic-q-a/17163/interrupt-latency-on-nrf52In the nRF52 specification, I cannot find figures for the interrupt latency for event on GPIO pins in different power mode OFF, ON (constant latency, Low Power). Can you provide an overview or extend the specification ? Thank you.en-USTelligent Community 13Wed, 19 Oct 2016 13:27:23 GMThttps://devzone.nordicsemi.com/thread/65932?ContentTypeID=1Wed, 19 Oct 2016 13:27:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b7672c20-4e05-4ae2-93d7-9d245a1d7b3fOle Bauck<p>There is a similar case on the forum here: <a href="https://devzone.nordicsemi.com/question/91596/interrupt-latency-when-running-wfiwfe/">devzone.nordicsemi.com/.../</a> I suggest you take a look at that.</p> <p>To sum up:</p> <p>Wakeup time from system ON or system OFF are specified the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/power.html?cp=2_2_0_17_9_1#unique_1863546626">Product Specification</a>. This number does not include startup time for HFCLK, regulators and flash. In addition you will have latency in the cortex for entering the interrupt, see <a href="http://infocenter.arm.com/help/topic/com.arm.doc.faqs/ka16366.html">here</a>.</p> <p>If constant latency mode is used, then the clock and regulators will be running. Then the startup time will be <code>CPU startup time + flash startup time + interrupt latency</code>. If constant latency mode is not used, then the startup time will vary depending on which resources is already running.</p><div style="clear:both;"></div>