https://devzone.nordicsemi.com/f/nordic-q-a/112253/current-consumption-using-uarte-in-interrupt-mode-nrf9160Hi all, I&#39;m currently working on a project that requires UART communication, and I&#39;m actually focusing on current consumption. For context, my device only needs to listen for an incoming frame (variable length) on UART. This frame is sent by anotheren-USTelligent Community 13Mon, 24 Jun 2024 09:48:03 GMThttps://devzone.nordicsemi.com/thread/490211?ContentTypeID=1Mon, 24 Jun 2024 09:48:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fa8bcd29-cfab-423d-8eb8-d7d832c19fd1Mowa<p>Hi, thank you for your quick response !</p> <p>I&#39;ve managed to get things working. That was pretty simple. By default in &quot;UART_ASYNC_MODE&quot;, UARTs are disabled at init state. This is not the case when using &quot;UART_INTERRUPT_DRIVEN&quot;. Adding some code to disable all unused UARTs reduced the current consumption as expected.</p> <p></p> <p>Ticket can be closed.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/489506?ContentTypeID=1Wed, 19 Jun 2024 12:26:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bde8517a-c204-4f46-8c64-49dd1ebde858Einar Thorsrud<p>Hi,</p> <p>The current consumption you are seeing 650 uA matched roughtly what I expect when using UART on the nRF9160. Have you considdred using the power management system for handlign this, in the way that is used for intance in the connectivity brige sample? You can refer to how it is handled there (see <a href="https://github.com/nrfconnect/sdk-nrf/blob/eef645c4a31201df353fdff5447262d7675fa1c1/applications/connectivity_bridge/src/modules/uart_handler.c#L228-L229">uart_handler.c</a>).</p><div style="clear:both;"></div>