US Patent 7319344 Pulsed flop with embedded logic

In one embodiment, an apparatus comprises a logic circuit, a plurality of passgates, at least one pulse generator, and a plurality of latch elements. The logic circuit has a plurality of inputs, and each of the passgates has an output directly connected to one of the inputs. The pulse generator is configured to generate a pair of control signals to the passgates, and is configured to generate pulses on the pair of control signals to open the passgates. Each of the latch elements is connected to a respective input and is configured to latch the signal on the respective input when passgates are open and to retain the signal on the respective input when the passgates are closed.