Low-power adiabatic sequential circuits using two-phase power-clock supply

Complementary pass-transistor adiabatic logic (CPAL) circuits can be driven by two-phase or four-phase power-clocks. CPAL circuits have more efficient energy transfer and recovery, as the non-adiabatic energy loss of output loads has been completely eliminated using complementary pass-transistor logic for evaluation and transmission gates for energy-recovery. In this paper, the design of adiabatic asynchronous sequential circuits based on the two-phase CPAL is presented. A practical sequential system realized with two-phase CPAL circuits is demonstrated. A two-phase nonoverlap sinusoidal power clock circuit for the two-phase CPAL is also presented.