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:
Jul. 06, 1999
Filed:
Jun. 01, 1998
Applicant:
Inventor:
G R Rao, Dallas, TX (US);
Assignee:
Cirrus Logic, Inc., Fremont, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G11C / ;
U.S. Cl.
CPC ...
711105 ; 711158 ; 711169 ; 365193 ; 365203 ;
Abstract
A dynamic random access memory (DRAM) includes priority access control circuitry, where the DRAM has a first precharge mode and a priority precharge mode. In the first precharge mode, the array is precharged during an external row address strobe (RAS) and accessed during an active state of the external RAS. In the priority precharge mode, the array is precharged during a precharge state of an internal RAS initiated by a priority signal received during any one of the precharge and active states of the external RAS, where the priority access control circuitry returns to the first mode on a subsequent precharge state of the external RAS.