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EPTM model-based probability calculation method for circuit signal reliability

A technology of probability calculation and calculation method, which is applied in the direction of calculation, electrical digital data processing, special data processing applications, etc., to avoid rapid expansion and reduce the complexity of time and space

Active Publication Date: 2017-04-19
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the problem that the prior art fails to give reasonable consideration to the evaluation accuracy and calculation time-space complexity, the present invention provides an accurate signal probability calculation method based on the EPTM model, which takes the basic components of the circuit as the unit

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  • EPTM model-based probability calculation method for circuit signal reliability
  • EPTM model-based probability calculation method for circuit signal reliability
  • EPTM model-based probability calculation method for circuit signal reliability

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings.

[0039] refer to Figure 1 ~ Figure 3 , a method for calculating the probability of a circuit signal based on an EPTM model, comprising the following steps:

[0040] Step 1: Netlist analysis and initialization of related quantities, the process is as follows:

[0041] 1.1) Read the circuit netlist;

[0042] 1.2) Detect the interconnection structure between circuit units, and display the implicit series-parallel relationship; then use the layering algorithm to layer the circuit, and extract the layer number l of the circuit c , the number of original input terminals n, the number of original output terminals m and the basic component types of the circuit and the number of components N;

[0043] 1.3) Construct the PTM of the i-th original input signal using a hybrid coding strategy, and use PS i express,

[0044]

[0045] 1.4) Construct the PTM of various types of c...

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Abstract

The invention discloses an EPTM model-based probability calculation method for circuit signal reliability. The calculation method comprises the following steps of 1: analyzing a netlist and initializing related variables; 2: extracting a circuit basic member gj, and calculating PTM of an input signal of the circuit basic member gj; 3: extracting PGj of gj, and calculating an output signal probability pgj of PGj; and 4: calculating output signal reliability pc of a circuit. The invention provides an accurate signal probability calculation method taking the circuit basic member as a unit based on an EPTM model; and the method can be used for accurately and quickly realizing probability assessment of circuit signal reliability, and is beneficial for realizing high-reliability design of a circuit topology structure in an early stage of circuit design.

Description

technical field [0001] The invention relates to the technical field of reliability evaluation and fault tolerance calculation, in particular to a method for calculating the probability of circuit signal reliability based on an analytical model. Background technique [0002] At present, with the introduction of new materials, new processes and new device structures, the integrated circuit industry has developed rapidly, and related digital products have also been widely used, and are closely related to our daily life, such as touch chips , baseband chips and power management chips, etc. However, as the feature size of semiconductor devices shrinks, corresponding changes have taken place in power supply voltage, operating frequency, and circuit density. They become more sensitive to various noise disturbances such as voltage disturbance, electromagnetic interference, and radiation, which makes the reliability margin of the circuit drop sharply, and causes the usual worst-case...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 肖杰李伟杨旭华曹迪胡海根吴一哲吕琳
Owner ZHEJIANG UNIV OF TECH
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