English

Abstract

Full Swing Gate Diffusion Input (FS-GDI) approach is power effective approach for realizing the different logic gates. In this research, this approach is utilized for realizing different four ALU design using 45nm and 130nm technologies. Also, the different low power VLSI logic styles and related past works are discussed with considering the 45nm and 65nm technologies for implementing various circuits for studying the technology size impact. The performance of the proposed ALU design is evaluated through power consumption, propagation delay and number of transistors. The variation of the ALU performance due to the used 45nm and 130nm technologies has been studied. The simulation is carried out utilizing Cadence Virtuoso simulator. The simulation experiments revealed the energy of the 4-bit ALU reduced by 32% compared to CMOS-based design and area of the digital circuits reducing. Regarding the different nano technologies, 45nm technology provides lower power consumption and delay time deceasing compared to ALU unit by 130nm technology. The presented approach of low hardware complexity achieves simplicity of the required ALU hardware through reducing the number of transistors.