https://devzone.nordicsemi.com/f/nordic-q-a/1436/nrf8001-5v-tolerantis it?en-USTelligent Community 13Thu, 23 Jan 2014 15:09:54 GMThttps://devzone.nordicsemi.com/thread/6423?ContentTypeID=1Thu, 23 Jan 2014 15:09:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:99418388-686c-4a2e-ad39-12ddda75c4a6run_ar<p>We have used the nRF8001 module from the development kit wiring it directly to an Arduino uno (5V). This will work for some time, but it will eventually kill the chip.</p> <p>Note that this is for the SPI interface, not VDD. VDD should still be max 3.6V.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/6422?ContentTypeID=1Thu, 23 Jan 2014 12:55:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:325ad551-bc58-4983-b61d-be2ead578eccH&#229;kon Alseth<p>Sorry, it is not 5V-tolerant.</p> <p>The only product that we have that is 5V tolerant on the data interface is nRF24L01+. But this product is proprietary RF only, no BLE.</p> <p>If you need 5V compatibility, then you must use a level shifter between your MCU and the nRF8001.</p> <p>BR Håkon</p><div style="clear:both;"></div>