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:
Jan. 23, 2001
Filed:
Oct. 31, 1997
Microprocessor circuits and systems with life spanned storage circuit for storing non-cacheable data
Steven D. Krueger, Dallas, TX (US);
Jonathan H. Shiell, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A microprocessor (,) for coupling to an external read/write memory (,) having an addressable storage space. This storage space stores cacheable digital data and non-cacheable (,) digital data. The microprocessor includes a data storage circuit (,) for storing a portion of the non-cacheable data. The microprocessor further includes an address storage circuit (,) for storing an address corresponding to the portion of the non-cacheable data. Still further, the microprocessor includes a counter (,) for advancing a count from an initial value (,) toward a threshold value (,) in response to an activity over time. The counter initiates its advancing operation in response to the data storage circuit receiving the portion of the non-cacheable data. Lastly, the microprocessor includes an indicator (,) for indicating the portion of the non-cacheable data in the data storage circuit is expired in response to the count reaching a threshold.