Comprehensive Analysis of 7T SRAM Cell Architectures with 18nm FinFET for Low Power Bio-Medical Applications

Abstract

The SRAM cells are used in many biomedical applications such as Pace makers,ECG devices,body area networks etc.,where power consumption will be the main constraint. The conventional 6T SRAM cell has reduced stability and more power consumption when technology is scaled resulting in supply voltage scaling, so other alternative SRAM cells from 7T to 12T have been proposed which can address these problems. Here a low power 7T SRAM cell is suggested which has low power consumption and condensed leakage currents and power dissipation. The projected design has a leakage power of 5.31nW and leakage current of 7.58nA which is 84.9 % less than the 7T SRAM cell without using the proposed leakage reduction technique and it is 22.4 % better than 6T SRAM and 22.1 % better than 8T SRAM cell when both use the same leakage reduction technique. The cell area of the 7T SRAM cell is 1.25µm2, 6T SRAM is 1.079µm2 and that of 8T SRAM is 1.28µm2all the results are simulated in cadence virtuoso using 18nm technology.