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. 01, 2015
Filed:
Jul. 18, 2014
National Cheng Kung University, Tainan, TW;
National Cheng Kung University, Tainan, TW;
Abstract
An adaptive data-retention-voltage regulating system for static random-access memory (SRAMs) is revealed. The system includes a power supply unit, a data-retention-voltage (DRV) monitor cell for monitoring static noise margin (SNM) of SRAM, a data loss detector for generating a data loss signal, and a dynamic regulating controller that receives the data loss signal for generating a refresh signal and a switch signal. The DVR monitor cell consists of a DRV monitor circuit mounted with a plurality of memory cells, a reset signal generating circuit for resetting the DRV monitor circuit, and an adaptive variation control circuit that generates noise bias according to leakage current to adjust reaction speed of the DRV monitor circuit correspondingly.