公开(公告)号：US12117942B2

公开(公告)日：2024-10-15

申请号：US18109675

申请日：2023-02-14

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics SA

Inventor： Roberta Vittimani ,  Federico Goller ,  Riccardo Angrilli ,  Charles Aubenas

IPC: G06F12/14

CPC classification number: G06F12/1441 ,  G06F12/1458

Abstract: A processing system includes a communication system and a processing core configured to generate write requests. A circuit has associated a slave interface circuit configured to manage an address sub-range and selectively forward write requests addressed to a given address. Configuration data specifies whether the given address is protected/unprotected and locked/unlocked. In response to a received write request, address and data are extracted and a determination based on the configuration data is made as to whether the extracted address is protected/unprotected, and locked/unlocked. When the extracted address is unprotected or unlocked, the slave interface forwards the write request. When the extracted address is protected and locked, the slave interface generates an unlock signal in response to a comparison of the extracted address with the extracted data, with the unlock signal being asserted when the extracted data satisfy a predetermined rule with respect to the extracted address.