The Research on Power Dissipation of Different ALU Implementation Schemes
Anping Jiang · Microprocessors · 2011
Low power is a challenging work in micro-processor design.Implementing power optimization on all components of the processor is a choice.One of the most basic components in micro-processor is the Arithmetic and Logic Unit(ALU).The architecture of ALU has several implications on power consumption,delay and area.There are three common ALU architectures:complex architecture,adder independent architecture and chain architecture.To find out which ALU architecture provides the best power efficiency,an 8-bit ALU of the three different architectures is designed.Compared with other architectures,the power savings of complex architecture are 19.38% and 33.87%.