Compact Programmable True Random Number Generator Based on Spin Torque Nano-Oscillator

Abstract

True Random Number Generator(TRNG) is the key component for stochastic computation. It can also act as the Probabilistic Bit(P-Bit) which is the core device for Ising Computer. In previous study, we have proposed a novel programmable TRNG based on Spin Torque Nano-Oscillator(STNO). With this TRNG constructed with STNO, a time division multiplexing Ising computer is designed to work under the Incremental Coupling Rule. However, the programmable TRNG is still lack of a corporeal hardware implementation. In this work, a SPICE model for STNO which can accurately describe the frequency, resistance as well as noise spectrum is provided first. And then, a compact optimized Schmitt trigger circuit with 14 nm FinFET technology is proposed to construct the programmable TRNG. Finally, the performance of the compact programmable TRNG circuit is evaluated and discussed.