https://devzone.nordicsemi.com/f/nordic-q-a/30351/how-to-control-specific-time-nrf52832-sleep-mode-system-off-modeHello Sir, I am using nRf52832 s132, i want to write program which is automatically ON from sleep mode and after few second it will go system off mode for 1hr. How i can do this as per the following: 1. nRf52832 device ON every 1 hr only for fewen-USTelligent Community 13Mon, 12 Feb 2018 14:53:38 GMThttps://devzone.nordicsemi.com/thread/120590?ContentTypeID=1Mon, 12 Feb 2018 14:53:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:112f2ec1-1cbb-415c-a1b2-377fc691b932Kenneth<p>I suggest an RTC timer yes, you will in any case need to use System ON with a low frequency clock (LFCLK), so the current consumption is about the same. Make sure that if you intend to wakeup every 1h, then you likely need to adjust the RTC PRESCALER to 1, since the max timout is about 512seconds with PRESCALER 0.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/120563?ContentTypeID=1Mon, 12 Feb 2018 12:25:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:75b79971-c02f-4fb9-8dd1-ac1f2ba37384vishal<p>Now i am use wdt timer for wake up device with every 1 hr is it ok for save power consumption or need to use other like RTC timer.</p> <p>Thanks for your reply...</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/120544?ContentTypeID=1Mon, 12 Feb 2018 10:25:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5119fc0a-5e0d-4c7e-ac16-d6d28ace9338Kenneth<p>Hi,</p> <p>To wakeup periodically you will need an RTC timer running, so you will need to use System ON wake on RTC. Most SDK examples show usage of app_timer, which can do the job for you.</p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/120467?ContentTypeID=1Sat, 10 Feb 2018 06:13:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:50ac9b5f-6771-4d24-9746-e317bba152c6vishal<p>Waiting your reply.....?</p><div style="clear:both;"></div>