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. 23, 2004
Filed:
Mar. 30, 2001
Markus Gail, München, DE;
Wolfgang Pockrandt, Reichertshausen, DE;
Armin Wedel, Mering, DE;
Erwin Hess, Ottobrunn, DE;
Infineon Technologies AG, Munich, DE;
Abstract
A circuit configuration includes at least one nonvolatile, electrically erasable and writable memory area. Each memory area is assigned a nonvolatile, electrically writable and erasable flag memory, which is connected through an address line, a programming line and an authentication line to the assigned memory area, a programming voltage source and a data verification circuit. In the event of an alteration in the content of a memory area, the state of the associated flag memory is changed and, after verification of the programmed memory area content, the flag memory is returned to its basic state.