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DQ2816A 16K Electrically EPROM Components datasheet pdf data sheet FREE from Datasheet4U.com Datasheet (data sheet) search for integrated circuits (ic), semiconductors and other electronic components such as resistors, capacitors, transistors and diodes.
That device is an electrically erasable EEPROM to store program data usually. They do not have high "endurance", they have a write cycle count of around 10,000 writes (number of times you can program it). They can read with no real "endurance" for reading the data.