MIKROE-2733

        MAC Address click PID: MIKROE-2733 MAC Address click provides a unique node address for your application. It also has 1Kbit of writable  EEPROM memory. MAC Address click carries the 24AA025E64 2K I2C Serial EEPROM with EUI‐64™ node  identity. The click is designed to run on either 3.3V or 5V power supply. MAC Address click  communicates with the target microcontroller over I2C interface.    24AA025E64 features The Microchip Technology Inc. 24AA025E64 is a 2Kb Serial EEPROM with a pre-programmed IEEE EUI-64 MAC Address. The device is organized as two blocks of 128 x 8-bit memory with a 2-wire serial interface. Low voltage design permits operation down to 1.7V, with maximum standby and active currents of only 1 uA and 1 mA, respectively. The 24AA025E64 also has a page write capability for up to sixteen bytes of data.  Specifications   Type  EEPROM  On‐board  modules  24AA025E64 2K I2C Serial EEPROMs with EUI‐64™ node identity from Microchip  Key Features  Pre‐programmed globally unique, 64‐bit node address; more than 1 Million  erase/write cycles  Key Benefits  1Kbit of writable EEPROM memory  Interface  I2C  Input Voltage  3.3V or 5V  Click board size  S (28.6 x 25.4 mm)  Pinout diagram This table shows how the pinout on MAC Address click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes  Pin  Pin  Notes    NC  1  AN  PWM  16  NC      NC  2  RST  INT  15  NC  NC  3  CS  TX  14  NC           NC  4  SCK  RX  13  NC      NC  5  MISO  SCL  12  SCL  I2C clock  NC  6  MOSI  SDA  11  SDA  I2C data  Power supply  +3.3V  7  3.3V  5V  10  +5V  Power supply  Ground  8  GND  GND  9  GND  Ground      GND  Jumpers and settings Designator  Name  Default  Position  Default  Option  Description  JP2  ADD  SEL  Down  0  I2C slave address A0 (LSB) bit selection 0/1, down  position 0, upper position 1.  JP3  ADD  SEL  Down  0  I2C slave address A1 bit selection 0/1, down position 0,  upper position 1.  PWR SEL  PWR  SEL  Left  3.3V  Power Supply Voltage Selection 3V3/5V, left position  3V3, right position 5V  Programming Code examples for MAC Address click, written for MikroElektronika hardware and compilers are available on Libstock. Code snippet The following code reads one byte from EEPROM and transmits data to UART. 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 if( !MACADDRESS_readByte( loop, &read ) ) { LOG( "rn Byte value [ " ); ByteToHex( read, txt ); Ltrim( txt ); LOG( txt ); LOG( " ] succeessfully read from [ " ); ByteToHex( loop, txt ); Ltrim( txt ); LOG( txt ); LOG( " ] address" ); } else { LOG( "rn Read Byte Error" ); } }                                                                        https://shop.mikroe.com/mac‐address‐click 9‐6‐17