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Method for analyzing state of power supply network of integrated circuit in real time

A power supply network and integrated circuit technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inaccuracy and design risks

Active Publication Date: 2016-03-30
XI AN UNIIC SEMICON CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At the beginning of the back-end design (or layout design) of an integrated circuit, it is necessary to carry out overall planning and layout of its power network; The quality of the product directly affects the quality of the product, so there is a design risk

Method used

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  • Method for analyzing state of power supply network of integrated circuit in real time
  • Method for analyzing state of power supply network of integrated circuit in real time
  • Method for analyzing state of power supply network of integrated circuit in real time

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Embodiment Construction

[0019] see Figure 1 to Figure 4 As shown, the present invention is a method for real-time analysis of integrated circuit power supply network status, comprising the following steps:

[0020] The first step is to extract the resistor-capacitor network according to the power trace of the integrated circuit layout to form a power network model in spice format. Define power supply nodes and power consumption nodes at the same time.

[0021] The second step is to use the power supply module in the integrated circuit to build a power supply unit to form a power supply model in spice format.

[0022] The third step is to extract the dynamic power consumption status of each module in the integrated circuit based on the overall circuit simulation, and describe it as a stimulus file in spice format, which becomes a power consumption model.

[0023] The fourth step is to build a top-level simulation circuit based on the power network model and power supply model in the first and secon...

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Abstract

The present invention discloses a method for analyzing a state of a power supply network of an integrated circuit in real time. The method comprises: 1, according to power supply routing of an integrated circuit layout, extracting a resistance-capacitance network and forming a power supply network model in a spice format; 2, setting up a power supply unit by utilizing a power supply module in the integrated circuit, and forming a power supply model in a spice format; 3, based on integral circuit simulation, extracting a dynamic power consumption state of each module in the integrated circuit to form a power consumption model; 4, based on the power supply network model and the power supply model, setting up a top layer simulated circuit, wherein the power supply model is connected to a power supply node, and the power consumption model is connected to a power consumption node; and 5, carrying out simulation on the top layer simulated circuit by utilizing a spice tool, and carrying out waveform observation on different nodes to know the state of the power supply network in real time. According to the method disclosed by the present invention, a pressure drop of each node of the power supply network can be accurately analyzed, so that advantages and disadvantages of power supply signal routing can be analyzed, or the pressure drop of each node is used as judgment basis of regulating the number and positions of power supply units.

Description

【Technical field】 [0001] The invention relates to the technical field of integrated circuit design, in particular to a method for analyzing the state of an integrated circuit power supply network in real time. 【Background technique】 [0002] At the beginning of the back-end design (or layout design) of an integrated circuit, it is necessary to carry out overall planning and layout of its power network; The quality of the product directly affects the quality of the product, so there is a design risk. 【Content of invention】 [0003] The purpose of the present invention is to provide a method for real-time analysis of the state of the integrated circuit power supply network, which can accurately analyze the voltage drop of each node of the power supply network in real time, and provide reference for design optimization. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: [0005] A method for analyzing the state of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 江喜平左丰国
Owner XI AN UNIIC SEMICON CO LTD
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