Microchip Technology AT24Cx I2C Serial EEPROMs

Microchip Technology AT24Cx I2C Serial EEPROMs are designed to allow multiple devices to share a common 2-wire bus. These serial EEPROMs feature Schmitt triggers, filtered inputs for noise suppression, bidirectional data transfer protocol, and write protect pin for hardware protection. The AT24x serial EEPROMs are I2C compatible and optimized for various industrial and commercial applications involving low-power and low-voltage operations. These serial EEPROMs operate at -55°C to +125°C and are available in space-saving packages.


  • Low-voltage operation:
    • 1.7V to 3.6V (8Kb EEPROM)
    • 1.7V to 5.5V (32Kb EEPROM)
  • Internally organized as:
    • 1024 x 8(8K)
    • 4096 x 8(32K)
  • I2C compatible (2-wire) serial interface
  • Bidirectional data transfer protocol
  • High reliability:
    • 1,000,000 write cycles endurance
    • 100 years data retention
  • Schmitt triggers, filtered inputs for noise suppression
  • Write protect pin for hardware protection
  • Self-time write cycle (5ms Max)
  • -55°C to +125°C operating temperature range

Block Diagrams

Published: 2019-01-30 | Updated: 2023-05-11