Design method of standard cell library circuit

Abstract

The invention discloses a design method of a standard cell library circuit. The method comprises the steps of (1) selecting a standard cell library corresponding to an existing process as a template,(2) classifying all the cells in the template, (3) modifying the names of transistors of all cells in the template according to a classification result, (4) providing a parameter assignment list required by all transistors of the standard cell library of a whole new process, and (5) carrying out parameter assignment on transistors at all levels according to a parameter assignment list and the number of drivers to form a standard cell library corresponding to the new process. According to the method, the automatic design of the standard cell library circuit can be achieved, the working efficiency can be improved, and the error rate is reduced.

Description

technical field [0001] The invention relates to a method for manufacturing a semiconductor integrated circuit, in particular a method for designing a standard cell library circuit. Background technique [0002] In the field of semiconductor integrated circuit manufacturing, each process requires a set of corresponding standard cell libraries. Before tape-out, standard cells in the standard cell library need to be used for automatic logic synthesis and layout layout and routing. [0003] In the existing methods, the establishment of the standard cell library is based on manual circuit construction and parameter modification. However, the number of cells in the standard cell library is large, ranging from three to four hundred to as many as six to seven hundred. Some libraries are designed for comprehensive Additional units may be required. Because the units in the standard unit library are very repetitive, the action of changing the parameters of the tubes is also mechanical...

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Problems solved by technology

[0003]In the existing methods, the establishment of the standard cell library is based on manual circuit construction and parameter modification. However, the number of cells in the standard cell library is large, and the number of cells is small. Three or four hundred, as many as six or seven hundred, some libraries may need more units for comprehensiveness

Because the units in the standard unit library are very repetitive, the action of changing the parameters of the tubes is also mechanical. Manually drawing each circuit diagram and modifying the parameters is actually equivalent to spending a lot of time doing repetitive and mechanical things, which is very inefficient, and Manual modification of parameters is easy to make mistakes

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