https://devzone.nordicsemi.com/f/nordic-q-a/85002/the-usage-of-enable-pin-of-nrf9160Hi Nordic， We have design a evaluate board based on nRF9160. There is another MCU on the board, we want to control the Enable mode of nRF9160, so we connect the Enable pin of nRF9160 to a GPIO of the MCU via a 220Ω resistor. We found that when ween-USTelligent Community 13Wed, 23 Feb 2022 07:24:26 GMThttps://devzone.nordicsemi.com/thread/354467?ContentTypeID=1Wed, 23 Feb 2022 07:24:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8675be50-4360-4b65-a4e6-4b5d7550395c&#216;yvind<p>Hello,&nbsp;<br />yes, that is a strange behavior. What&nbsp;revision of the nRF9160 are you using, and with what modem fw? Have you had a schematic review of the board?</p> <p>Kind regards,<br />Øyvind</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/354450?ContentTypeID=1Wed, 23 Feb 2022 00:49:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:80072024-dfcc-4ce2-ad6f-9fde508dc99ehelen<p>Hi&nbsp;<span>&Oslash;yvind,</span></p> <p><span>But we test that 9160 continue to work with Enable pin pull to low.</span></p> <p><span>very strange.</span></p> <p><span>What do you think about it?</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/354349?ContentTypeID=1Tue, 22 Feb 2022 12:51:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3ee128bf-23a7-4a11-9dac-3c3a17ffb60e&#216;yvind<p>Hello,&nbsp;<br /><br />Have a look at the <a href="https://infocenter.nordicsemi.com/topic/nwp_037/WP/nwp_037/enable.html">Enable chapter of the nRF9160 Hardware Design Guidelines</a>. This describes:<span>&nbsp;logic high (&gt; 0.8 x VDD1)&nbsp;enables&nbsp;</span><span>nRF9160 and logic low (&lt; 0.4 V) disables&nbsp;nRF9160.</span></p> <p><span>Kind regards,<br />Øyvind</span></p><div style="clear:both;"></div>