Resistive Threshold Logic

TL;DR

This paper introduces a resistive threshold logic family using memristors for large-scale, brain-like logic functions in VLSI, emphasizing simplicity and reduced area for high-input scenarios.

Contribution

It presents a universal Boolean logic cell based on memristive resistive dividers and thresholding, reducing complexity compared to traditional CMOS logic.

Findings

Resistive divider uses memristors for weighted sum calculation.

Threshold operation converts analog output to binary.

Proposed cell offers smaller area and simplicity for high-input logic functions.

Abstract

We report a resistance based threshold logic family useful for mimicking brain like large variable logic functions in VLSI. A universal Boolean logic cell based on an analog resistive divider and threshold logic circuit is presented. The resistive divider is implemented using memristors and provides output voltage as a summation of weighted product of input voltages. The output of resistive divider is converted into a binary value by a threshold operation implemented by CMOS inverter and/or Opamp. An universal cell structure is presented to decrease the overall implementation complexity and number of components. When the number of input variables become very high, the proposed cell offers advantages of smaller area and design simplicity in comparison with CMOS based logic circuits.