AT24C256 in 24LCxx / AT24Cxx I2C EEPROM Family
The AT24C256 series represents a standard sub-family of 256-Kbit I2C Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) devices, currently produced by Microchip Technology (formerly Atmel). These non-volatile memory components are engineered for industrial and commercial applications requiring high-density data storage in a compact footprint. They utilize a two-wire serial interface, providing low-power operation and high-reliability data retention across a wide voltage range, making them essential for storing configuration parameters and calibration data.
Variants within the AT24C256 family are primarily distinguished by their operating voltage ranges, with 'B' or 'C' revisions often denoting improvements in standby current and speed. Packaging options range from standard 8-lead SOIC and PDIP to space-saving TSSOP, UDFN, and VFBGA formats. Some specific part numbers are also qualified for automotive use (AEC-Q100) or offer different temperature ratings including industrial and extended grades.
