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:
Apr. 19, 1994
Filed:
Apr. 24, 1991
Applicant:
Inventors:
Michael T Derwin, Delray Beach, FL (US);
Brenda M Ozaki, Deerfield Beach, FL (US);
William A Wall, Boca Raton, FL (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36523002 ; 36523006 ; 36523008 ; 307463 ;
Abstract
An address decoder is connected to an address bus and comprises a plurality of latches for latching address signals from the address bus. Decode logic is connected to use unlatched addresses from the address bus or latched addresses from the latches. The decoder is selectively operable to decode addresses in two modes, an unlatched mode and a latched mode dependent upon system frequency. The decode logic produces a signal that is transmitted into a state machine for controlling operation thereof.