SPICE macromodel and CMOS emulator for memristors

Area of Science:

• * Electrical Engineering
• * Materials Science
• * Computer Engineering

Background:

• * Memristors are emerging non-volatile memory devices with unique resistance-switching properties.
• * Accurate device modeling is crucial for simulating and designing memristor-based circuits.
• * Existing models may not fully capture memristor behavior across all resistance states.

Purpose of the Study:

• * To propose a novel SPICE macromodel for memristors.
• * To develop a complementary 4-bit CMOS emulator for memristors.
• * To validate the accuracy and utility of the proposed model and emulator.

Main Methods:

• * Development of a SPICE macromodel based on the memristor's fundamental model equation.
• * Implementation of a 4-bit CMOS circuit to emulate memristor behavior.
• * Comparative analysis of simulation results against the memristor model equation.

Main Results:

• * The proposed SPICE macromodel exhibits excellent agreement with the memristor model equation across the full resistance range (RESET to SET states).
• * Average percentage errors were less than 0.5% for the SPICE macromodel and 0.9% for the 4-bit CMOS emulator.
• * The CMOS emulator provides a practical platform for circuit design and verification.

Conclusions:

• * The developed SPICE macromodel and CMOS emulator accurately represent memristor characteristics.
• * These tools are highly beneficial for designing and verifying peripheral circuits for memristor applications, especially during early development stages.
• * The CMOS emulator facilitates memristor circuit design even before the fabrication process is mature.