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:
Aug. 31, 1999
Filed:
Jun. 02, 1997
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A clock driver circuit is furnished in a centrally located macro cell layout region. The clock driver circuit has a plurality of predrivers and a plurality of main drivers. The input and output nodes of the predrivers are short-circuited by a first and a second common line, and the input and output nodes of the main drivers are short-circuited by the second and a third common line. A plurality of clock driver circuits are formed predetermined distances apart and arranged to intersect the clock driver circuit perpendicularly. Each of the clock driver circuits has a plurality of predrivers and a plurality of main drivers. The input and output nodes of the predrivers are short-circuited by a fourth and a fifth common line, and the input and output nodes of the main drivers are short-circuited by the fifth and a sixth common line. The third and the fourth common lines are interconnected. The sixth common line is connected to clock signal supply lines which in turn are connected to a plurality of second macro cells.