The Microchip Technology Inc. 24AA01/24LC01B is a 1Kb Serial EEPROM. The device is organized as one block of 128 x 8-bit memory with a 2-wire serial interface. Low-voltage design permits operation down to 1.7V with standby and active currents of only 1 µA and 1 mA, respectively. The 24XX01 also has a page write capability for up to 8 bytes of data.


  • Single supply with operation down to 1.7V for 24AAXX devices, 2.5V for 24LCXX devices
  • Low-power CMOS technology – Read current 1 mA, typical – Standby current 1 mA, typical (I-temp)
  • 2-wire serial interface, I2C™ compatible
  • Schmitt Trigger inputs for noise suppression
  • Output slope control to eliminate ground bounce
  • 100 kHz and 400 kHz compatibility
  • Page write time 3 ms, typical
  • More than 1 million erase/write cycles
  • Data retention >200 years
  • Factory programmable available

Project details