Abstract:
A method for decreasing a leakage current using voltage control and power gating and a semiconductor device using the method are provided to decrease the leakage current and to maintain data stored in a register at the same time, by blocking the leakage current generated in a circuit configuration element not used temporarily. A semiconductor device comprises a digital circuit(110), a power switch(120), a register(130_1,130_2,130_3,...), a current blocking circuit(140) and a power saving device(150). The power switch applies one of an operation voltage and a non-operation voltage to the digital circuit according to the operation of the digital circuit. The register maintains stored data by being connected to the voltage selected by the power switch. The current blocking part blocks a leakage current generated in the digital circuit. The power saving device controls the power switch and the current blocking part by outputting a selection signal.
Abstract:
A power network circuit adopting zigzag power gating and a semiconductor device including the same are provided to be used easily in implementing semi-custom scheme on the basis of a conventional standard cell as having low power consumption. At least one pair of first rails(1000) comprises a power supply voltage line(1200) supplying a power supply voltage and a virtual base voltage line(1300) connected to a base voltage line of another rail pair through a first power gating circuit(1100). At least one pair of second rails(2000) comprises a virtual power supply voltage line(2200) connected to a power supply voltage line of another adjacent rail pair through a second power gating circuit(2100) and a base voltage line(2300) supplying a base voltage. The first power gating circuit is a NMOS(N-channel Metal -Oxide Semiconductor) transistor switching the connection of the base voltage line and the virtual base voltage line of the adjacent rail pair, in response to an inversion signal of a sleep mode control signal.
Abstract:
PURPOSE: A power gating circuit and an integrated circuit including the same are provided to reduce the length of wire with respect to a mode controlling signal by utilizing a virtual power voltage as the mode controlling signal. CONSTITUTION: A logic circuit(110) performs a pre-set logic operation. The logic circuit is connected between a first power rail(VDD) and a virtual power rail(VPR). A switching unit(120) selectively connects the virtual power rail with a second power rail(VSS). A retention flip-flop(130) receives the power of the virtual power rail as a controlling signal. The retention flip-flop selectively performs a flip-flop operation or a data retention operation.
Abstract:
The present invention relates to a modeling method which estimates delay time and output time of a gate when a body bias voltage is applied. A method of modeling the delay time or the output time of the gate according to the present invention includes a step of selecting a first gate among a plurality of gates; a step of determining the structure of the selected first gate; a step of generating the delay time ratio or the output time ratio of the selected first gate according to the determination result; and a step of calculating the delay time or the output time of a second gate when the body bias voltage is applied based on the delay time or the output time of the second gate among the generated delay time ratio or the output time ratio and the gates. [Reference numerals] (110) First delay time table; (120) Delay time ratio table; (130) Second delay time table