A New Single-Clock Flip-Flop for Half-Swing Clocking

We propose a new flip-flop configuration which saves about 60% of total clocking power using a half-swing clock. To use the half-swing clock, level converters or special clock drivers are traditionally required and the power consumptions of these logic cannot be ignored. In the proposed scheme, only NMOSes are clocked with half-swing clock in order to make it operate without the level converter or any other additional logics, and the random logic circuits except clock and flip-flops are supplied by V,, while the clock network is supplied by Vcc/2. Compared to the conventional scheme, a great amount of power consumed in clocking which is responsible for a large portion of total chip power can be saved with the proposed new flip-flop configuration.