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:
Jun. 10, 2014
Filed:
Feb. 11, 2011
Volker Rzehak, Ergolding, DE;
Rudiger Kuhn, Freising, DE;
Johannes Gerber, Unterschleissheim, DE;
Matthias Arnold, Freising, DE;
Volker Rzehak, Ergolding, DE;
Rudiger Kuhn, Freising, DE;
Johannes Gerber, Unterschleissheim, DE;
Matthias Arnold, Freising, DE;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An electronic device includes an integrated circuit with a FRAM memory and an integrated capacitor connected between a power supply for the FRAM memory and ground. The integrated capacitor has a capacitance sufficient to store the charge necessary for a complete read-and-write-back cycle of the FRAM memory. When granting read-access to the FRAM memory, the FRAM memory is supplied by the integrated capacitor which is then disconnected from the integrated circuit power supply. Upon receiving a request for a read-access to the FRAM memory, a charge detector detects whether the internal capacitor is sufficiently charged for a complete read-and-write-back cycle of the FRAM memory. Read-access to the FRAM memory is only granted if the internal capacitor is sufficiently charged and disconnected from the power supply. An alternative embodiment alternately charges and powers the FRAM from two integrated capacitors.