A tiled programmable fabric using QCA

Abstract

Quantum-dot Cellular Automata is an interesting computation fabric with many never-seen-before properties. However, no programmable fabric scheme has utilized all these properties effectively. We propose an architecture for a programmable device using QCA which exploits all the specialities of the fabric. The architecture taps the flexibility provided by the clocking system of QCA to build a simple tile based programmable device with the 3-input Majority gate as the fundamental logic element. Observing how a QCA structure can behave as either an interconnect or a logic gate depending on clocking, the proposed architecture merges routing and logic elements, thus drastically changing how programmable fabrics have been designed.

Novel level and edge-triggered universal shift registers with low latency in QCA technology

“…All four clock zones are considered as a delay cycle in the QCA. By utilizing cells with 180 degrees of the phase difference, we can pass the wires from one node [ 31 , 32 ]. Fig.…”