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. 16, 2025
Filed:
Oct. 09, 2023
Renesas Electronics Corporation, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
The semiconductor device includes a control unit having redundant processors, a memory storing target data, a secure memory storing a key used for encryption or decryption processing, an cryptographic unit, a secure processor instructing cryptographic processing to the cryptographic unit in response to a request from the control unit, a first bus coupled to the control unit, the memory, the cryptographic unit, and the secure processor, and a second bus coupled to the secure memory, the cryptographic unit, and the secure processor. The control unit communicates with the memory via a predetermined error detection mechanism, the cryptographic unit includes a plurality of cryptographic processors that independently perform cryptographic processing on target data using a key based on an instruction, and each of the plurality of cryptographic processors includes a data transfer unit that performs data transfer with the memory via the error detection mechanism.