FLASH MEMORY APPARATUS FOR PHYSICAL UNCLONABLE FUNCTION AND EMBODYING METHOD OF THE SAME

摘要

When a function for preventing physical copying is implemented through a flash memory device, the flash memory device: includes a flash memory unit including a memory cell array consisting of multiple memory cells; receives input of a challenge value; sets predetermined program voltage based on the challenge value; programs data by applying the set program voltage to a predetermined memory cell area of the flash memory unit; reads the data, programmed in the predetermined memory cell area, by applying the predetermined read voltage to the predetermined memory cell area; and outputs the read data as a response value corresponding to the challenge value. The predetermined memory cell area includes two or more memory cells having different threshold voltage.