Memristor cross array-based processing circuit and output current compensation method

Abstract

The invention provides a memristor cross array-based processing circuit and an output current compensation method, and relates to the technical field of cross arrays. The processing circuit comprisesa first memristor cross array, n first conversion circuits, n first analog-to-digital converters ADC and n first compensation modules, wherein m word lines of the first memristor cross array are respectively used for receiving m input voltages, each bit line in n bit lines of the first memristor cross array is connected with a first conversion circuit, and the first conversion circuit is used forconverting an analog current output by a corresponding bit line in the first memristor cross array into an analog voltage; each first conversion circuit is connected with one first ADC, each first ADCis connected with one first compensation module, and each first compensation module is used for compensating the first digital voltage after the first ADC converts the analog voltage of the corresponding bit line into the first digital voltage. According to the processing circuit provided by the invention, the accuracy of the output current of the cross array and the calculation performance of the cross array can be improved.

Description

technical field [0001] The invention relates to the technical field of cross arrays, in particular to a processing circuit based on a memristive cross array and an output current compensation method. Background technique [0002] Due to the high-performance advantages of multiply-accumulate operations, the resistive crossbar array is considered to be a promising hardware accelerator for neuromorphic computing. The resistive variable memory (memristor) in each crossbar can simulate the synapses in the neural network. A common critical problem in resistive crossbar arrays is the voltage drop (the voltage drop across the line resistance) caused by the current flowing through the conductive wires, which is more harmful for fully parallel resistive crossbar arrays. Big. [0003] In the prior art, when solving the current attenuation problem caused by the voltage drop of the line resistance, the current is effectively reduced by reducing the line resistance or increasing the res...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a processing circuit and output current compensation method based on the memristive cross-array in order to solve the problems existing in the prior art due to the influence of line resistance The output current of the cross array is attenuated, and the calculation performance of the cross array is reduced

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