DEVICE FOR MONITORING THE OPERATION OF A DIGITAL CIRCUIT

摘要

The invention relates to a digital electronic circuit (100), including: a plurality of sequential elements (103; 104; 105; 106); at least one data-conducting path (101; 102) connecting an input sequential element to a destination sequential element; a clock outputting a clock signal (clk) on a clock tree for setting the speed of the sequential elements; characterised in that said circuit includes a monitoring device (S1; S2) receiving, as an input, at least one data signal (D1, D2) travelling on a conducting path and arriving at a destination sequential element, the monitoring device including: a means (S2; X3) for defining at least one detection window according to the clock tree; and a means (X1) for detecting a transition of each data signal received during a detection window; and wherein each detection window is defined so as to enable the detection or anticipation of a fault corresponding to a violation of the rise time or the maintenance time of a data signal relative to a clock signal edge received by the destination sequential element receiving said data signal.