Spintronics logic in Cache (SLIC) based Adders

Abstract

MOSFET is the technology on which the electronics industry is based on for the last few decades. But as the device size keeps getting smaller, some difficulties arises that result in degradation of the device performance which can no longer be dealt with. So, we need to have a look at the novel alternatives that can not only maintain the current standards of the industry but also have the potential to take it forward. An emerging technology called Spintronics which uses spin of an electron as well as the charge as opposed to MOSFET which only uses the charge, opens up avenues that were not possible with the CMOS technology.Specifically, Spintronics Logic in Cache (SLIC) is discussed in this thesis where in addition to being serving as a proper cache; it can also serve as a full adder (Ripple Carry Adder) that can perform a 4 bit operation on the bits stored in the cache. We also designed a Carry Look-ahead Adder and compared its performance on the basis of delay, power consumption and device count to the Ripple Carry Adder. We also tried to analyze how these SLIC based adders do as compared to their CMOS counterparts. During this process, we also generalized a way to design any digital circuit using SLIC that could be designed in CMOS technology.