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:
Sep. 26, 1989
Filed:
Sep. 29, 1987
Applicant:
Inventors:
Dennis E Gates, Wichita, KS (US);
Keith B DuLac, Derby, KS (US);
Assignee:
Maryland, Dayton, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518905 ; 36523008 ; 365233 ;
Abstract
A compact register file circuit, especially valuable for CMOS VLSI circuits used with microcontrollers, which uses a pseudo static random access memory array circuit, a latch array circuit, and a decoder circuit to provide almost identical characteristics as available with a much larger static random access memory as a register set. The only differences visible to the user during a read operation is the requirement of keeping the address data value constant during the active portion of the pseudo static random access memory chip select waveform.