The AT28HC256E-15SI by Atmel is a premier 256-Kilobit EEPROM designed to meet the critical storage needs of various electronic applications. It features a low-power consumption design with a fast 150 ns access time, operating at 5V. Encased in an industrially rugged SOIC package, it offers exceptional durability and ease of integration for board-level designs. Notably, the 'HC' series is engineered for reduced power usage without sacrificing performance, thus it is particularly suitable for battery-operated devices. This EEPROM's extended data retention and increased write endurance make it an invaluable component for storing firmware, calibration data, and user settings in a diverse range of products. The 'I' in the model number signifies its appropriateness for industrial applications, thanks to its wide operating temperature range. Its parallel interface accommodates rapid data transfers, making it a flexible option for developers needing a reliable non-volatile memory solution.