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:
Mar. 24, 1998
Filed:
Apr. 19, 1995
Applicant:
Inventors:
Assignee:
Cirrus Logic, Inc., Fremont, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518905 ; 36523006 ;
Abstract
A memory system 104 is provided which includes an array 200 of memory cells arranged in rows and columns. Circuitry 207, 208, 209, 210 is also provided for selectively performing logic operations on a bit of data stored in a selected memory cell using a bit of received modifying data. Circuitry 207, 208, 209, 210 for performing logic operations is operable during an AND operation to write the bit of modifying data into the selected memory cell when the bit of modifying data is a logic zero and maintains an existing bit stored in the selected cell when the bit of modifying data is a logic one.