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. 22, 1998
Filed:
Mar. 28, 1996
Francedilla.ois Tailliet, Epinay sur Seine, FR;
SGS-Thomson Microelectronics S.A., Saint Genis, FR;
Abstract
The disclosure relates to integrated circuits and methods in which it is desired to implement a partition of a memory between a protected zone and a non-protected zone, the dimensions of the protected zone being defined by a customer of the memory. A disclosed method avoids the use of special instructions to define these dimensions. The method includes writing sensitive information elements by starting at an address ADP, and ending at an address ADFM dictated by the circuit. The writing in the address ADFM automatically triggers a sequence for storing, in a non-volatile register RV, the first written address, and a sequence for the activation of a system for the protection of the zone between the addresses ADP and ADFM.