Time delayed testing generation method for wire-to-wire crosstalk decereration effect

Abstract

A time delay test generation method for crosstalk deceleration effect between lines includes collection of crosstalk sources between lines, selection of faults and simplification of fault sets, and generation of time delay tests and simplification of test sets for the condensed fault sets. Degradation in performance due to crosstalk slowdown effects requires targeted latency testing. The steps are as follows: Step 1: Obtain circuit delay allocation and critical paths; Step 2: Preprocessing of jump signals; Step 3: Collection of crosstalk sources and simplification of fault sets in critical paths; Step 4: Delay test of enhancer path sensitization Generation and test set reduction.

Description

technical field [0001] The invention relates to the technical field of semiconductor technology, in particular to a delay test generation method for crosstalk deceleration effect between lines, which is to generate time delay test for the performance degradation caused by crosstalk deceleration effect between lines, effectively simplifying fault sets, and improving test performance. Latency test generation method for generation efficiency and reduced test cost. Background technique [0002] The increasingly refined semiconductor technology makes the transistor size smaller and smaller, so the signal transition edge of the device is faster and faster, which leads to increasingly serious signal integrity problems in the field of high-speed digital circuit system design. Signal integrity refers to the quality of the signal on the signal line. A signal with good signal integrity means that it has the necessary voltage levels to reach when needed. Signal integrity issues are no...

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Problems solved by technology

The disadvantages are: the number of faults is large; due to the short-path effect of the gate delay test, it is difficult to find the worst-case test; the test generation algorithm requires a large change in the traditional algorithm

The disadvantages are: it is impossible to generate tests for suspected crosstalk sources in a targeted manner; genetic algorithms and SPICE (The Stanford Program on International and Cross-Cultural Education, a general-purpose circuit-level simulation program first developed by Stanford University in the United States, and later adopted by the industry The combination of universally adopted and extended) simulations introduces multiple iterations of SPICE simulations, which require a long calculation time

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