AT24MAC and AT24CS EEPROM Devices

By Microchip Technology 80

AT24MAC and AT24CS EEPROM Devices

Microchip's AT24MAC series of devices provide pre-programmed media access control (MAC)/extended unique identifier (EUI) node identity addresses, alleviating the need for customers to program their own MAC/EUI addresses and maintain the associated complex databases, making it simpler, faster, and less expensive to develop Internet-connected products of all types.

Microchip's AT24CS series of devices includes unique, factory programmed, read-only serial numbers that can help customers simplify inventory control of mass production lines and enhance product traceability.


  • I2C-compatible interface
  • Permanent and reversible write protection modes available
  • SOIC, TSSOP, DFN, SOT23-5 packages
  • 1.7 V to 5.5 V VCC range
  • 1 million cycles endurance
  • 100 year data retention
AT24MAC Series
  • 2 Kb serial EEPROM (fully user accessible)
  • Pre-programmed, unique Microchip-generated read-only 128-bit serial/ID number
  • Pre-programmed, unique 48-bit or industry-first 64-bit MAC/EUI values
AT24CS Series
  • 1 Kb to 8 Kb serial EEPROM (initial launch)
  • Pre-programmed unique Microchip-generated, read-only 128-bit serial/ID numbers