A Ferroelectric Differential Bit Cell Based Multiple-Time Programmable Physical Unclonable Function (PUF) For IoT Devices Security
Paritosh Meihar, Srinu Rowtu, Sandip Lashkare, Udayan Ganguly · 2023
Inherent ferroelectric-switching-based PUFs are unbiased at exact median of switching voltage and time, which is difficult to implement in an integrated circuit as the conventional voltage supply has 10% tolerance. We show an unbiased differential-ferroelectric-switching-based Multiple-Time programmable Physical Unclonable Function (PUF) for security key generation for IoT devices, through Spice simulation. A ferroelectric-differential-bit-cell consists of two single-domain parallel ferroelectric capacitors (FE-CAPs) connected in series with dielectric-capacitor, having voltage feedback, allowing unbiased single FE-CAP switching.