Quick simulator based on static random storage and method

Abstract

The present invention relates to semiconductor memory technology, and is especially one kind of fast simulator based on SRAM and its simulation method. The circuit artwork structure consists of the equivalent circuit model of memory unit in the vertex and the memory units in other positions. The simulation process includes the following steps: 1. finding out and maintaining the artwork of the memory unit in the vertex in the SRAM artwork; 2. extracting corresponding equivalent circuit model for the memory unit artwork of other positions; and 3.post-simulating the whole extracted netlist of the equivalent circuit while simulating only the maintained vertex memory unit. The present invention has the feature of wide application range and may be used in designing SRAM design and other kinds of memory.

Description

technical field [0001] The invention relates to the technical field of semiconductor memory, in particular to a fast simulator and a fast simulation method based on static random access memory. Background technique [0002] Static Random Access Memory (SRAM) is widely used today in the field of portable devices and microprocessors. The design of high speed, low power consumption and large capacity of SRAM has always been a difficult problem in chip design. [0003] Since the design of SRAM basically adopts a fully customized design process, this determines that its entire design and implementation process is inseparable from a large number of transistor-level simulations. As a high-precision transistor-level simulation software, Hspice has been recognized and widely used in the industry for a long time. However, Hsipce also has defects, that is, the simulation speed is relatively slow, which makes it more suitable for simulating small and medium-sized circuits. For an SRA...

AI Technical Summary

Problems solved by technology

However, the post-layout simulation speed of the new software is not satisfactory. There are two reasons. On the one hand, the capacity of SRAM increases rapidly; The number of devices that need to be simulated and calculated. These two reasons make those high-speed Spice simulation software have to perform more heavy formula calculations in order to obtain accurate post-simulation results, which ultimately leads to slow simulation speed.

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