AT24MAC402-SSHM-T, EEPROM Serial-I2C 2K-bit 256 x 8 1.8V/2.5V/3.3V/5V 8-Pin SOIC T/R

AT24MAC402/602 I2C Compatible Series EEPROMs
Microchip AT24MAC402/602 I2C Compatible Series EEPROMs provide 2048 bits of Serial Electrically-Erasable Programmable Read-Only Memory (EEPROM) organized as 256 words of eight bits each and is accessed via an I2C-compatible (2-wire) serial interface. In addition, AT24MAC402/602 incorporates an easy and inexpensive method to obtain a globally unique MAC or EUI address (EUI-48 or EUI-64). AT24MAC402 is an EUI-48 compatible device that contains a 48-bit EUI address, and AT24MAC602 is an EUI-64 compatible device that contains a 64-bit EUI address. The EUI-48 and EUI-64 addresses can be assigned as the actual physical address of a system hardware device or node or it can be assigned to a software instance. These addresses are factory programmed by Microchip and permanently write protected in an extended memory block located outside of the standard 2-Kbit bit memory array. In addition, the AT24MAC402/602 provides the value added feature of a factory-programmed, guaranteed unique 128-bit serial number located in the extended memory block (same area as the EUI address values). The serial number is Microchip factory-programmed and permanently write protected. This 128-bit serial number is compatible with all AT24CS, AT93CS, and AT25S family serial numbers, therefore, providing guaranteed unique serial numbers for any application that is also using Microchip Serial EEPROMs.