公开(公告)号：US20230213578A1

公开(公告)日：2023-07-06

申请号：US18089764

申请日：2022-12-28

Applicant: STMicroelectronics S.r.l.

Inventor： Riccardo CONDORELLI ,  Antonino MONDELLO ,  Michele Alessandro CARRANO

IPC: G01R31/317 ,  G01R31/3173

CPC classification number: G01R31/31703 ,  G01R31/31725 ,  G01R31/3173

Abstract: A system-on-chip includes a process-voltage-temperature (PVT) sensor with a filter circuit that initiates a patterned digital signal and propagates the patterned digital signal in a manner responsive to variations in semiconductor material, operating supply voltage and operating temperature of the system-on-chip. A digital comparison circuit compares the initiated patterned digital signal and the propagated patterned digital signal. A warning signal is generated in response to the comparison where there is a detection of discrepancy between the initiated patterned digital signal and the propagated patterned digital signal.

公开(公告)号：US20220382355A1

公开(公告)日：2022-12-01

申请号：US17752229

申请日：2022-05-24

Applicant: STMicroelectronics S.r.l.

Inventor： Antonino MONDELLO ,  Alessandro INGLESE

IPC: G06F1/3206 ,  G06F15/78

Abstract: A system on chip includes a monitoring circuit that detects an anomalous behavior of the system on chip. The monitoring circuit compares a behavior of the system on chip to at least one reference parameter representing the anomalous behavior of the system. Using this comparison, the anomalous behavior of the system on chip is detected. An interrupt is the issued in response to the detected anomalous behavior of the system on chip.

公开(公告)号：US20230090664A1

公开(公告)日：2023-03-23

申请号：US17946298

申请日：2022-09-16

Applicant: STMicroelectronics S.r.l.

Inventor： Antonino MONDELLO ,  Michele Alessandro CARRANO ,  Riccardo CONDORELLI

IPC: G06F21/57 ,  G06F8/65 ,  G06F21/60

Abstract: The present disclosure relates to a method including executing, by an electronic device, a first firmware module stored in a volatile memory of the electronic device, the execution of the first firmware module causing an updated firmware key to be stored in a non-volatile memory of the electronic device, and uploading a second firmware module to the electronic device. The method also includes decrypting the second firmware module by a cryptographic processor of the electronic device based on the updated firmware key, and installing the decrypted second firmware module in the volatile memory of the electronic device at least partially overwriting the first firmware module.