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:
May. 26, 2020
Filed:
Nov. 30, 2017
Renesas Electronics Corporation, Tokyo, JP;
Shinsuke Asari, Tokyo, JP;
Kenichi Ito, Tokyo, JP;
Yuki Mori, Tokyo, JP;
Shigemasa Shiota, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
It is possible to prevent a central processing unit and a security processing unit from accessing of a non-volatile memory at the same time. A data flashincludes a secure areaand a user area. In the secure area, a plurality of pieces of security information used in a security process is stored. A security IPreads out a portion of the plurality of pieces of security information from the secure areaand stores it in the secure RAM. When the security information to be used in the security process is stored in the secure RAM, the security IPreads out the security information from the secure RAMand uses it.