Power Efficient Optimized Arithmetic and Logic Unit Design on FPGA

This paper deals with low power ALU design and its implementation on 90nm Spartan 3 FPGA. Most of power is consumed in ALU in any processor and hence reduction in ALU power is needed. In this work, we have designed a low power ALU. To reduce dynamic power consumption we disabled the blocks which are not needed in currently selected operation. Also hardware is reused; this will cut down the FPGA resource usage and also reduce the power consumption. By using these methods dynamic power consumption is reduced and less FPGA resources were consumed.