Quantifying the figures of merit of graphene-based adiabatic Pass-XNOR Logic (PXL) circuits

In this work we quantify the figures of merit of p-n junction based adiabatic graphene circuits implemented through a new logic design style, the Adiabatic Pass-XNOR Logic style (Adiabatic-PXL). First we show how graphene p-n junctions naturally implement transmission gates with embedded XNOR functionality (the Pass-XNOR gate); second, we present a dedicated logic synthesis flow for integrating those gates into adiabatic logic circuits with ultra low-power features. Simulation results have shown that Adiabatic-PXL circuits are 4.2X to 5.5X more energy efficient than non-adiabatic counterparts, still with significant amount of area savings (67% less devices on average).