Design Of Logic Circuit And Crossbar Array Based On The Memristor

As the size of transistor is keeping decreasing,the size and calculated performance of integrated circuit is close to the limit and the development of CMOS technology faces great challenges.Memristor,as a new nano-electronic device with the advantages of fast read and write speeds,low power consumption,non-volatile memory,small size,is considered a promising competitor to replace CMOS.Logic operation is the most basic functions of the computer.Therefore,the design of logic circuits based on memristors has important theoretical and practical value.Firstly,this thesis outlines the development and research status of memristor,and makes a brief introduction for the mechanism of memristor,analyzes and simulates the TiO₂ model of HP Labs and the voltage threshold model-VTEAM,then models the complementary resistive switch-CRS adopting the VTEAM model and analyzes the related characteristics of CRS.Next,on the basis of switching effect and resistive performance of memristors,this thesis proposes the logic gate circuits based on a single memristor,which mainly includes the operation of material implication,NAND gate,NOR gate,NOT gate and XNOR gate.In order to solve the leakage current problem existing in the crossbar array based on a single memristor,then this thesis presents the logic circuits based on CRS.It mainly introduces the operation of material implication and the NAND gate circuit in detail.Finally,this thesis presents crossbar arrays based on a single memristor and CRS Respectively,and implements logic operations based on a single memristor and CRS in crossbar arrays.Aiming at the problem of CRS read and write circuit,this thesis presents a novel CRS read and write circuit,which can effectively read the state of CRS without breaking the initial state of CRS.The research results of this thesis involves in all aspects of the logic circuit design based on memristors,including the analysis of the model of memristors,the design of the CRS,the introduction of the memristive switching effect,the logic gate circuit based on a single memristor,the analysis of the leakage current in the crossbar array based on a single memristor,the logic gate circuit based on CRS,the crossbar array design for logic operation of single memristor,the crossbar array design for logic operation of CRS,the read and write circuit design of CRS unit.These research results provide theoretical support for the development of the logic circuits based on memristors.