Flip-flop and semiconductor system including the same
First Claim
1. A flip-flop which generates a first feedback signal using a signal generated inside the flip-flop, the flip-flop comprising:
- a first stage circuit that receives a first data signal and a clock signal and that generates a first internal signal through a first node;
a second stage circuit that receives the first internal signal, the clock signal, and the first feedback signal and that generates a second internal signal through a second node; and
a third stage circuit that generates a second data signal by latching the second internal signal when the clock signal is at a first level, using the second internal signal and the clock signal,wherein the second stage circuit cuts off at least one first current path between the second node and a power supply, based on the first feedback signal, when the clock signal is at a second level, andwherein the second stage circuit forms a second current path between the second node and the power supply, based on the first internal signal and the clock signal.
1 Assignment
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Accused Products
Abstract
A flip-flop generates a first feedback signal using a signal generated inside the flip-flop. The flip-flop includes a first stage circuit, a second stage circuit and a third stage circuit. The first stage circuit receives a first data signal and a clock signal and generates a first internal signal through a first node. The second stage circuit receives the first internal signal, the clock signal, and the first feedback signal and generates a second internal signal through a second node. The third stage circuit generates a second data signal by latching the second internal signal when the clock signal is at a first level, using the second internal signal and the clock signal. The second stage circuit cuts off at least one first current path between the second node and a power supply, based on the first feedback signal, when the clock signal is at a second level.
4 Citations
14 Claims
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1. A flip-flop which generates a first feedback signal using a signal generated inside the flip-flop, the flip-flop comprising:
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a first stage circuit that receives a first data signal and a clock signal and that generates a first internal signal through a first node; a second stage circuit that receives the first internal signal, the clock signal, and the first feedback signal and that generates a second internal signal through a second node; and a third stage circuit that generates a second data signal by latching the second internal signal when the clock signal is at a first level, using the second internal signal and the clock signal, wherein the second stage circuit cuts off at least one first current path between the second node and a power supply, based on the first feedback signal, when the clock signal is at a second level, and wherein the second stage circuit forms a second current path between the second node and the power supply, based on the first internal signal and the clock signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A flip-flop which generates a first feedback signal using a signal generated inside the flip-flop, the flip-flop comprising:
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a first stage circuit that receives a first data signal and a clock signal and that generates a first internal signal through a first node; a second stage circuit that receives the first internal signal, the clock signal, and the first feedback signal and that generates a second internal signal through a second node; and a third stage circuit that generates a second data signal by latching the second internal signal when the clock signal is at a first level, using the second internal signal and the clock signal, wherein the second stage circuit cuts off at least one first current path between the second node and a power supply, based on the first feedback signal, when the clock signal is at a second level, and wherein the second stage circuit comprises; a pull-up circuit connecting the power supply to the second node; and a pull-down circuit connecting a ground to the second node, the pull-up circuit comprises; at least one first PMOS transistor controlled to be turned on/off by receiving the clock signal; at least one second PMOS transistor controlled to be turned on/off by receiving the first internal signal; and at least one third PMOS transistor controlled to be turned on/off by receiving the first feedback signal, and the pull-down circuit comprises; at least one first NMOS transistor controlled to be turned on/off by receiving the clock signal; at least one second NMOS transistor controlled to be turned on/off by receiving the first internal signal; and at least one third NMOS transistor controlled to be turned on/off by receiving the first feedback signal. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification