Adiabatic Two-Phase CPAL Flip-Flops Operating on Near-Threshold and Super-Threshold Regions

AbstractLow-power adiabatic flip-flops operating on near-threshold and super-threshold regions are investigated in this paper. The flip- flops are realized using two-phase CPAL (complementary pass-transistor adiabatic logic) circuits. A traffic light controller operating on near-threshold and super- threshold regions is verified. All circuits are simulated using NCSU PDK 45nm technology by varying supply voltage from 0.4V to 0.9V with 0.1V steps. Based on the HSPICE simulation results, the energy consumption of the medium-voltage adiabatic flip-flops using two-phase CPAL circuits can be greatly reduced with reasonable speed