Digitale Vorrichtung mit einer Rücksetz-Pad-Schaltung, die einem Hacker-Angriff Ausgesetzt Sein Kann

Details

Veröffentlichungs-Nr.

EP4400939

Aktenzeichen

EP24305015

Anmeldetag

5. Januar 2024

Veröffentlichung

17. Juli 2024

Rechtsraum

EP

IPC

G06F1/24

Abstract

A digital device (50), wherein a reset pad circuit (52) has a first input coupled to a first reset access port (53) configured to receive a first reset request (IOFT), a second input coupled to a second reset access port (54), and an output (60), the reset pad circuit (52) configured to generate a first reset state signal (ZI) and having a reset request propagating portion (65, 68, 72) coupling the second input to the output of the reset pad circuit (52). An internal reset activation gate (57) has a plurality of inputs coupled to internal resources (55) and an output coupled with the second reset access port (54) of reset pad (circuit 52), the internal reset activation gate (57) configured to generate a reset request (IRS). A memory element (75) has a first input (75B) coupled to the output of the internal reset activation gate (57), a second input (75C) coupled to the output (60) of the reset pad circuit (52), and an output (75D), the memory element configured to generate a second reset state signal (SE_R) when receiving the reset request (IRS) until receiving the first reset state signal (ZI). A reset forward gate (77) is coupled to the outputs of the reset pad circuit (52) and the memory element (75) and configured to generate a system reset request (SY_R) in presence of the first reset state signal (ZI) and/or the second state signal (SE_R).

Anmelder

Firma

STMicroelectronics International N.V.

Land

🇨🇭 Schweiz

Fachgebiete