Low-Power, Low-Energy, Static, Contention-Free, TSPC Dual-Edge Triggered Flip-Flops

The dual edge-triggered flip-flop samples the data on both the positive and negative edges of the clock. Hence, it can lead to lower clock relative power consumption as compared to the single-edge triggered flip-flop while maintaining the same data throughput. In this paper, we present two low-power, low-energy dual-edge triggered TSPC flip-flops based on latch-mux type methodology. These two flip-flops, Low-Power at Low Data Activity (LPLD-DET), and Low-Power at High Data Activity (LPHD-DET) are suitable for low-power application. These flip-flops are fully static and contention-free. The post-layout simulation results in TSMC CMOS 65 nm technology suggest that the proposed LPLD-DET is the most power-efficient dual-edge triggered flip-flop for low data activities up to 30%, and LPHD-DET is the most power-efficient dual-edge triggered flip-flop for higher data activities from 45% compared to the other state-of-the-art dual-edge triggered TSPC flip-flops.