Analytical method and device for power ground network of integrated circuit

A technology of integrated circuits and analysis methods, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of numerical stability and calculation efficiency in the calculation process, and achieve good numerical stability, high calculation accuracy, The effect of low computational complexity

Inactive Publication Date: 2010-12-01
FUDAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0019] The object of the present invention is to provide a projection order reduction method and device with stable calculation process and high calculation efficiency to analyze the power ground

Method used

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  • Analytical method and device for power ground network of integrated circuit
  • Analytical method and device for power ground network of integrated circuit
  • Analytical method and device for power ground network of integrated circuit

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Embodiment Construction

[0048] The present invention quickly analyzes the integrated circuit power ground network device such as image 3 As shown in 112, it includes an input unit 102, an output unit 103, a program storage unit 105, an external bus 110, a memory 106, a storage management unit 107, an input-output bridge unit 108, a system bus 111 and a processor 109.

[0049] When the circuit analyzing device analyzes the power ground network, it first inputs the circuit characteristic data 101 of the power ground network into the memory 106 through the input unit 102 . The input unit can be a keyboard, an external storage device or a network connection. At the same time, the NHAR program 104 stored in the program storage unit 105 is also loaded into the memory. The processor 109 executes the NHAR program 104 to analyze the power ground network, and the analysis result is provided to the user through the output unit 103 in the form of graphics or text. A typical example of such a device would be a...

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Abstract

The invention relates to an analytical method and a device for a power ground network of an integrated circuit. The method comprises the following steps: firstly, establishing a matrix circuit equation of the power ground network; then constructing a projection matrix by a nonhomogeneous Amoldi method, and carrying out contragradient transformation on the matrix circuit equation of the power ground network to obtain a reduced order system; and finally, solving the transient response of the reduced order system to obtain the analytical result. The device applying the method comprises an input unit, an output unit, a program storage unit, an external bus, a memory, a storage management unit, an input/output bridging unit, a system bus and a processor. NHAR programs realizing the analytical method of the invention are stored in the program storage unit, and the circuit characteristic data of the power ground network are analyzed through the NHAR program. By analyzing the power ground network by the invention, numerical values can be ensured to be stable in the computational process, and very high computational accuracy can be achieved by very low complexity of computation, thereby solving the problem that the stableness of the numerical value and the computational efficiency can not be compromised in the computational process of the current methods.

Description

technical field [0001] The invention belongs to the field of integrated circuits, and in particular relates to an analysis method and device for an integrated circuit power supply network. technical background [0002] The purpose of the power ground network in an integrated circuit is to provide current to the active devices in the integrated circuit at a stable voltage. With the continuous shrinking of ultra-large-scale integrated circuit (ULSI) feature size, the integration level, complexity and operating frequency of chips are greatly increased, and the reliability of power-ground network is becoming more and more important. The Ldi / dt noise, voltage drop (static or dynamic), electromigration (EM) and LC resonance of the power ground network wire will cause the voltage fluctuation of the power ground network, which will cause integrated circuit timing deviation, logic error, excessive power consumption, etc. , and even make the circuit invalid, and the chip cannot work ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 曾璇杨帆苏仰锋
Owner FUDAN UNIV
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