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. 16, 1990
Filed:
May. 16, 1989
Jaswinder S Jandu, Mesa, AZ (US);
Trevor S Smith, Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A combined multiple memory array is disclosed which includes at least two differing types of memory arrays located next to and aligned to one another. The individual memory cells of the differing memory arrays are designed wherein the x pitches may vary in order to allow the y pitches to be substantially equal. A common set of row decoders provide common wordline decoding to the differing memory arrays. The memory arrays need not have the same number of words or bits to share the common row decoders. The column decoders may be separate for each array to account for different word sizes. A common set of column decoders is possible with equal word lengths from each array. A significant savings in silicon area may be saved by combining the multiple arrays.