Method and device for designing standard cell library and integrated circuit

Abstract

The invention discloses a method and a device for designing a standard cell library. The method comprises a step of designing a common standard cell, and also comprises a step of designing a double-edge flip-flop cell, and the step of designing the double-edge flip-flop cell comprises: when determining the type of the standard cell, adding the double-edge flip-flop cell to the standard cell type; designing a schematic diagram of the double-edge flip-flop cell; and designing a diagram of the double-edge flip-flop cell. A mold of the double-edge flip-flop cell is established, and the method for establishing the mold comprises the following steps of: establishing a rising edge comprehensive library and a falling edge comprehensive library for the double-edge flip-flop; and establishing a double-edge flip-flop simulated library for the double-edge flip-flop. The invention also discloses a method and a device for designing an integrated circuit. Due to the method and the device, the rising edge and the falling edge for each jump of the clock signal can serve the logical function of a chip, so that the jumping frequency of the clock, needed to complete the same logical function, is reduced, and the dynamic energy consumption of the circuit is also lowered.

Description

technical field [0001] The invention relates to the field of integrated circuit design, in particular to a standard cell library and an integrated circuit design method and device. Background technique [0002] The design of CMOS (Complementary Metal-Oxide Semiconductor, Complementary Metal-Oxide Semiconductor) digital IC (Integrated Circuit, integrated circuit) can be divided into full-custom design and semi-custom design. Full-custom design is a transistor-level design approach where all components, interconnects, and layouts of a circuit are designed directly. Semi-custom design is further divided into designs based on gate arrays and standard cell libraries. [0003] The design based on the standard cell library refers to designing some basic logic units (such as gate circuits, multi-way switches, flip-flops, etc.) in the circuit design according to the principle of optimal design, and storing them in the standard cell library as standard cells. When designing an integ...

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Problems solved by technology

[0019] In the traditional standard cell library, the basic sequential logic unit uses a single-edge trigger, and its flip is only triggered by a certain edge (rising edge or falling edge) of the clock, and the transition of the other edge is not used. The utilization rate of the clock by the edge trigger is only 50%, and the clock is not fully utilized, therefore, it also causes a waste of dynamic power consumption

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