Design of 8 Bit Microprocessor Using Different Sub Threshold Current Mode Logic Techniques

In this paper, different new current mode logic techniques are proposed for the implementation of digital circuits operating at extremely low power, like Multi Sub Threshold Current Mode, Leakage Reduction Transistor Current Mode, and Dual Voltage Current Mode. These techniques are offered as alternatives to traditional MOS current mode logic. The proposed circuit styles work with leakage currents but at low frequencies, as sub threshold circuits work with very little supply voltage. An 8 Bit microprocessor is proposed based on these current mode logic techniques, and it is simulated using the Cadence Virtuoso tool in 45nm CMOS Technology at a power supply of 240 mV. Processor performance and power are compared with processors designed using conventional Sub Threshold Current Mode circuits, indicating that with larger propagation delay values, the suggested circuits dissipate less power.