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. 29, 1991
Filed:
Aug. 03, 1987
Applicant:
Inventor:
Eric S Goldsmith, Watauga, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36523001 ; 36518901 ;
Abstract
A method and device for enabling writes to a memory unit. The memory write device, such as a microprocessor (11), must provide a predetermined sequence of addresses to an address decoding unit (13), which then passes along the decoded addresses to a memory write enable unit (14). If the correct sequence, and only the correct sequence, is so provided, the memory write enable unit (14) will provide an enable signal (16) to the memory (12), thereby allowing the microprocessor (11) to write to the memory (12). A timer (26) can be utilized to limit the enable window.