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:
Oct. 01, 1991
Filed:
May. 10, 1990
Applicant:
Inventors:
Andreas A van den Elshout, Eindhoven, NL;
Hendrikus J Veendrick, Eindhoven, NL;
Dirk W Harberts, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307469 ; 307465 ; 307481 ; 365104 ;
Abstract
A master slice semiconductor integrated circuit comprising ROM memory cells which consist of NMOS-transistors as well as PMOS-transistors. In order to increase the integration density on the master slice, the NMOS-transistors and the PMOS-transistors (memory cells) in one and the same row are controlled via one and the same word line. The circuit includes row selection means, for example, an exclusive-OR circuit for each row, for selecting either a single row of NMOS cells or a single row of PMOS cells.