The Microchip AT34C02D is a 2 Kb Serial EEPROM utilizing an I²C (2-wire) serial interface. The device is organized as one block of 256 x 8 and is optimized for use in consumer and industrial applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options.

The AT34C02D is designed to support the JEDEC EE1002 and EE1002A Serial Presence Detect (SPD) function used in DDR, DDR2, and DDR3 Dual Inline Memory Modules (DIMM). In order to comply with this standard, the device includes a software write protection feature for the lower 128 bytes of the EEPROM that can be made permanent.

• 256 x 8 (2 Kbit)
• 2-Wire Serial Interface, I²C Compatible
  • 400 kHz and 1 MHz (5V) clock compatibility
  • Supports up to 8 devices on the bus
• JEDEC EE1002 and EE1002A Serial Presence Detect (SPD) Compliant 
  • EEPROM Specification for use in DDR, DDR2, and DDR3 DIMM Modules
• Self-Timed Erase and Write Cycles (5 ms max.)
• Low Power Consumption
  • Read current 1 mA (Typ), 2 mA (Max)
  • Write current 2 mA (Typ), 3 mA (Max)
  • Standby current 6 uA (Max)
• Hardware Write-Protect Pin
• More than 1 million erase/write cycles
• Data retention > 100 years
• Available in 8-pad 2x3mm UDFN, 8-lead TSSOP, 8-lead JEDEC SOIC, and 8-ball VFBGA Packages