This plug-and-play device also comes with additional EEPROM capability to help store configuration settings or lookup tables or buffer small amounts of data. These chips are available in SPI, I²C and the UNI/O® bus to offer designers the flexibility to select the one that best fits into an application. Also note that the actual EUI-48™ node address is stored in the last 6 bytes of the memory array with the Most Significant Bit in the lowest memory address or the Big Endian convention.