https://devzone.nordicsemi.com/f/nordic-q-a/109165/selecting-nrf52xxx-chip-for-adding-ble-to-the-nrf9160I want to add BLE to a`n nRF9160 based product that we have in testing phase. Most descriptions are based on nRF52840 but this chip seems quite large when we already have the nRF9160 and we have our application running here. The application is not veryen-USTelligent Community 13Tue, 12 Mar 2024 14:18:38 GMThttps://devzone.nordicsemi.com/thread/473462?ContentTypeID=1Tue, 12 Mar 2024 14:18:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5d92f651-b9c6-48b0-b469-c4a20d820a51Edvin<p>Hello,</p> <p>For Bluetooth, you can use whatever chip you can fit the Bluetooth HCI sample from Zephyr. As for Thread (Matter) I am not sure. I will have to confirm this with our Matter team, but as far as I know, the only serialization for Matter would be the openthread coprocessor. But this does not support being an openthread coprocessor and a Bluetooth HCI device at the same time, and hence, you can&#39;t run Matter over the coprocessor, since Bluetooth Low Energy is a requirement for Matter.&nbsp;</p> <p>You could perhaps do some sort of proprietary protocol over UART/SPI, but that would require the entire Matter stack to run on the nRF5xxx device. If that is the case, you would need <strong>at least</strong> the nRF52840.</p> <p>Let me check in with our Matter team, and I will get back to you.</p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>