A Low-Power CMOS Flip-Flop for High Performance Processors

Abstract — A significant amount of the total power in highly synchronous systems gets dissipated over clock networks. Therefore, low-power clocking schemes would be promising approaches for high performance designs. To reduce the power consumption and delay, a new flip-flop circuit technique has been designed in CMOS domino logic. These flip-flops are a class of dynamic circuit that can be interfaced with both static and dynamic circuits. This flip-flop results in significant energy savings and operates in high speed. Based on simulation results of UMC 180 nm technology and 200 MHz frequency, we have simulated the flip-flop circuit and compared the result with the previous proposed flip-flops simulated with the same environment. The comparison results of the proposed flip-flop with the previous proposed flip-flop shows that the proposed circuit reduces 80 % of power consumption and the speed increases to 70-90%. Keywords—Flip-Flop; CMOS; Domino logic; Dynamic logic; Low power; Power-delay product; processor