Method of designing DRAM macro-cell and arrangement template therefor

Abstract

A DRAM macro-cell designing method. The method includes a step of producing arrangement templates and a step of disposing leaf cells. In the step of producing arrangement templates, when a plurality of types of leaf cell are to be disposed to form a DRAM macro-cell, arrangement templates which are stratified into high order and low order are produced on the basis of parameters of the DRAM macro-cell such that, of the plurality of types of leaf cell, leaf cells of the same type are concatenatedly disposed. In the step of disposing leaf cells, a low-order template is employed to dispose predetermined leaf cells to produce a new leaf cell, and a high-order template is employed to dispose at least one of the new leaf cell. Consequently, it is possible to efficiently design a layout of a DRAM macro-cell without increasing a number of arrangement templates.

Dependencies are inferred from the claim text.