https://devzone.nordicsemi.com/f/nordic-q-a/18904/nrf51822-mac-addressIs the default Mac address inside nRF51822 purchased from IEEE?en-USTelligent Community 13Wed, 11 Jan 2017 06:58:34 GMThttps://devzone.nordicsemi.com/thread/73060?ContentTypeID=1Wed, 11 Jan 2017 06:58:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:92727ec2-c0c8-4a03-b855-913f89a2801dbjorn-spockeli<p>No, the default MAC address that is programmed into the FICR registers of the nRF51822 during production is a randomly generated static address. From the Bluetooth Core specification, Volume 6 Part B, Section 1.3 DEVICE ADDRESS</p> <blockquote> <p>A static address is a 48-bit randomly generated address and shall meet the following requirements:</p> <ul> <li>The two most significant bits of the static address shall be equal to ‘1’</li> <li>All bits of the random part of the static address shall not be equal to ‘1’</li> <li>All bits of the random part of the static address shall not be equal to ‘0’</li> </ul> </blockquote> <blockquote> <p>A device may choose to initialize its static address to a new value after each power cycle. A device shall not change its static address value once initialized until the device is power cycled.</p> </blockquote> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>