Abstract
Limited energy consumption in multimedia requires very low power circuits. In this paper we focused on leakage current minimization in single static random access memory (SRAM) cell in 90nm complementary metal oxide semiconductor (CMOS) technology. The leakage current mainly consists of sub threshold leakage current and gate leakage current in 90nm CMOS technology. So minimizing the sub threshold leakage current and gate leakage current is most important aspect in low power memory design. This work presents a technique based on dual threshold voltage (Vt), dual gate oxide thickness (tox) and dual power supply (Vdd) assignment together to minimize gate leakage and sub threshold current of SRAM cell.Simulation results using 90nm CMOS technology show that this technique can reduce the total leakage current dissipation of a single SRAM cell by more than 75% with less delay penalty.
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