https://devzone.nordicsemi.com/f/nordic-q-a/47588/disabling-uart_1-on-52840So I&#39;ve had a LOT of problems getting power management to work with UARTE on the 52840. We&#39;re using both UART_0 and UART_1 and have finally gotten UART_0 to work as it should. However, UART_1 still causes problems. So basically both UARTE are disableden-USTelligent Community 13Tue, 21 May 2019 17:06:50 GMThttps://devzone.nordicsemi.com/thread/188361?ContentTypeID=1Tue, 21 May 2019 17:06:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b9fd6cab-a1d8-4bd8-b460-9ed138031583endian-benjamin<p>So the problem was that the driver I used as a sample didn&#39;t disable interrupts correctly. So if anyone runs into this, make sure interrupts are disabled before disabling the peripheral. If you forget, it&nbsp;will silently not work.</p><div style="clear:both;"></div>