A 2× logic density Programmable Logic array using atom switch fully implemented with logic transistors at 40nm-node and beyond

Abstract

Programmable Logic (PL) with a high logic density is demonstrated by cross-bar (xbar) of atom switches, which are programmed through logic transistors. The PL has 4 4-input LUTs to minimize area-delay product owing to small area & capacitance of atom switch. Xbar with 50% and 100% populations mixed and programming lines shared architecture achieves a 2× higher logic density comparing to a commercial PL chip on same technology node of 40 nm. 3× higher operation frequency and 40% lower power consumption are also assessed.