Design and implementation of Configurable Logic Block of an FPGA using quantum dot cellular automata

Quantum-dot Cellular Automata (QCA) is a promising as well as an emerging technology for implementing digital systems at the Nano — scale regime. QCA technology has a unique feature, which operates at low power, high speed and density. This feature makes QCA as an alternative technology for CMOS. The present work selects the basic components of the Configurable Logic Block (CLB) of a Xilinx Field programmable gate array using QCA technology. We have designed and simulated QCA based circuits such as multiplexer, Decoders, 8-Bit LUT. The proposed multiplexer based LUT have been designed and simulated using the QCA Designer software tool. The simulation results obtained from QCA Designer Tool are compared with Cadence CMOS technology. Our proposed CLB design shows an improvement of 24% fewer QCA cells, occupies 62% lesser overall area compared to previous works. The simulation result shows that the proposed QCA technology occupies smaller area and less power consumption.