公开(公告)号：US20240356744A1

公开(公告)日：2024-10-24

申请号：US18628508

申请日：2024-04-05

Applicant: STMicroelectronics International N.V.

Inventor： Antonino Mondello ,  Michele Alessandro Carrano ,  Riccardo Condorelli

IPC: H04L9/08 ,  G06F13/40

CPC classification number: H04L9/088 ,  G06F13/40

Abstract: A circuit implemented as a System-on-Chip (SOC) circuit comprising a microcontroller configured to drive one or more hard macros via a respective communication interface and a shielded bus. The microcontroller configured to transmit over the shielded bus random numbers to the hard macro. The microcontroller and the hard macro configured to use these random numbers as cryptographic shared secret for authentication. The microcontroller configured to drive via the communication interface the hard macros authenticated via the random numbers.

公开(公告)号：US12294358B2

公开(公告)日：2025-05-06

申请号：US18409083

申请日：2024-01-10

Applicant: STMicroelectronics International N.V.

Inventor： Riccardo Condorelli ,  Antonino Mondello ,  Michele Alessandro Carrano ,  Daniele Mangano ,  Fabien Laplace ,  Luc Garcia ,  Michel Cuenca

IPC: H03K17/22 ,  G11C5/14

Abstract: A resettable digital stage operates when a supply voltage is higher than a threshold. A non-volatile memory stores a digital code read by a reading stage. A main power-on reset circuit generates a main reset signal controlling reset of the reading stage. A resettable volatile memory coupled to the reading stage stores a default value when reset. An auxiliary power-on reset circuit generates an auxiliary reset signal controlling reset of the volatile memory. Upon deactivation of the reset, the reading stage loads the digital code into the volatile memory. The main power-on reset circuit functions in a non-trimmed configuration response to the stored default value and in a trimmed configuration responsive to the stored digital code. The main power-on reset circuit has first and second operative thresholds which respectively fall within a first and second non-trimmed voltage range or within a first and second trimmed voltage range.