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:
Mar. 16, 2010
Filed:
Mar. 06, 2008
Pierre Rizzo, Aix en Provence, FR;
Christophe Moreaux, Simiane, FR;
David Naura, Aix en Provence, FR;
Ahmed Kari, Aix en Provence, FR;
Pierre Rizzo, Aix en Provence, FR;
Christophe Moreaux, Simiane, FR;
David Naura, Aix en Provence, FR;
Ahmed Kari, Aix en Provence, FR;
STMicroelectronics SA, Montrouge, FR;
Abstract
A persistent volatile memory cell memorizes a binary datum during a retention time independent from a supply voltage of the memory cell. The memory cell comprises a capacitive memory point supplying a persistent voltage and having a determined discharge time, a switch for triggering the discharge of the memory point when an erase signal has an active value, a switch for triggering the charge of the memory point when a write signal has an active value, and a sense-amplifier circuit having an input receiving the persistent voltage, and an output supplying the binary datum. The memory cell can be applied to the management of an inventory flag in a contactless integrated circuit.