The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1992
Filed:
Dec. 10, 1991
Nobuyoshi Tanimura, Mitaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A gate array integrated circuit on a single chip has a standardized memory cell array, in a matrix, and a plurality of basic cells constituting a gate array unit. The integrated circuit is standardized as to its interconnections except for the basic cells constituting the gate array and other components, such as input/output buffers associated with an application specific wiring of the basic cells of the gate array. Connection between the gate array unit and the memory cell array is through a data register and switching circuit that can buffer data and arrange for the transfer of data at a selected data width up to the number of bits in a word line of the memory cell array, to provide for sufficient independence of the memory cell array and all of its necessary circuitry from the specific application wiring of the gate array unit, so that the memory cell array may be standardized.