The AT24HC02C-XHM-B is a Serial EEPROM manufactured by Microchip. It is part of the company's AT24HC02C family of EEPROMs. The device features two address pointers and offers a maximum capacity of 512 x 8-bit EEPROM. It can operate over a temperature range of -40° C to +125° C and supports both a 5.0V and 3.3V voltage supply range. The low power design allows the device to be power efficient and ideal for applications that continuously require data storage. In addition, the device also features a fast write mode and can provide up to 10 years of data retention.