公开(公告)号：EP1295297A1

公开(公告)日：2003-03-26

申请号：EP01947509.4

申请日：2001-06-18

Applicant: STMicroelectronics S.A.

Inventor： LIARDET, Pierre-Yvan ,  MUSSARD, Bruno

IPC: G11C16/22 ,  G06F1/00

CPC classification number: G11C16/22

Abstract: The invention concerns a circuit for detecting the use (100) of an integrated circuit element. The invention is characterised in that the circuit (100) comprises: a non-volatile electrically programmable storage circuit (116) and a programming circuit (110) for partly programming said storage circuit and gradually modifying its programming level every time the element is being used, so that said level should represent the number of times it has been used.

公开(公告)号：EP1295297B1

公开(公告)日：2005-10-12

申请号：EP01947509.4

申请日：2001-06-18

Applicant: STMicroelectronics S.A.

Inventor： LIARDET, Pierre-Yvan ,  MUSSARD, Bruno

IPC: G11C16/22 ,  G06F1/00

CPC classification number: G11C16/22

Abstract: The invention concerns a circuit for detecting the use (100) of an integrated circuit element. The invention is characterised in that the circuit (100) comprises: a non-volatile electrically programmable storage circuit (116) and a programming circuit (110) for partly programming said storage circuit and gradually modifying its programming level every time the element is being used, so that said level should represent the number of times it has been used.