Holtek HT24LC04 4 Kbit serial EEPROM memory Description: Serial EEPROM memory Model = HT24LC04 Brand = Holtek Semiconductor Capacity = 4 Kbit Organization = 512 x 8 Interface = I2C Operating temperature range = -40°C ~ +85°C Enclosure = 8 pin SOIC Datasheet: https://www.holtek.com.tw/documents/ 10179/11842/HT24LC04v180.pdf It is not sent to post office boxes