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. 23, 1988
Filed:
Jun. 05, 1986
Applicant:
Inventors:
John E Turner, Beaverton, OR (US);
Gregg R Josephson, Lake Oswego, OR (US);
Assignee:
Lattice Semiconductor Corporation, Hillsboro, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
365185 ; 365201 ; 34082583 ; 371 21 ; 364715 ;
Abstract
A programmable logic array is disclosed employing arrays of electrically erasable and programmable cells. The device includes a dual purpose programming circuit which is employed to provide programming data to the AND array to program the AND array cells, and to provide OR array row selection data during OR array programming, thereby eliminating the need for a separate OR array row decoder. A method and apparatus is also disclosed for efficiently testing the AND array cells and input circuitry by bulk stripe programming the array cells.