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A true random number generator using write speed variation of oxide-based RRAM is proposed for the first time. The signal of this physical unclonable function (PUF) is strong with long duration to be easily and accurately captured by simple circuit, of which the advantage is attributed to the mechanism that the speed variation amplifies the fluctuation of oxygen vacancy trap and de-trap. Some function...
This paper presents the design, implementation and experimental results of an energy harvesting system to extract energy from power transmission lines. The energy is extracted from a high permeability core clamped on a high alternative current cable. A coil wound on the magnetic core can harvest energy effectively from the power line when the core is operating at the non-saturation region. Little...
We propose an asymmetric write algorithm of step-down set/step-up reset without verify for the first time. The demonstration is carried out on a 128Kb test macro of AlOx/WOx bi-layer ReRAM fabricated based on 0.18µm logic process. The set and reset energy per bit are reduced by 34% and 20% respectively. The set and reset access time decrease by 54% and 32% respectively. The mean value of endurance...
Si CMOS represents a nearly optimal implementation of charge-based logic devices. To extend logic device performance significantly beyond CMOS, it may be necessary to explore collective-effect state variables. This paper analyzes logic devices based on several collective-effect state variables: collective spin polarization (ferromagnet), collective spin oscillation (spin wave), and correlated charge...
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