Stmicroelectronics S.r.l.

Matteo Brivio

Matteo Venturelli

Nicola De Campo

Giorgio Rossi

Carlo Caimi

Mauro Foppiani

Leonardo Pedone

Rossella Gaudiano

Simone Scaduto

A system for testing is provided. The system includes an electronic circuit and an automatic testing equipment (ATE). The electronic circuit includes a voltage monitor including a resistive divider receiving at its voltage input an input voltage and coupled at its output to an input of a comparator. A reference input of the comparator is coupled to a generator supplying a reference voltage setting one or more thresholds of the comparator. The electronic circuit includes a Built In Self Test Module coupled to the ATE and to the inputs and output of the comparator. The BIST module is being configured upon receiving respective commands from the ATE to test a reaction time of the comparator and an offset of the comparator. The ATE performs a respective test of the ratio of the resistor divider by a first voltage measurement and a test of the reference voltage provided by the generator.

Testing an electronic circuit having a voltage monitor circuit

A digital-to-analog converter (DAC) includes a switching network and built-in-self-test (BIST) circuitry. The DAC, in operation, generates analog output signals in response to input codes of a set of input codes of the DAC. The BIST circuitry sequentially applies codes of a determined subset of codes of the set of input codes to test the plurality of switches. The determined subset of codes has fewer codes than the set of input codes. The BIST circuitry detects failures of switches of the plurality of switches based on responses of the DAC to the applied codes. In response to detecting a failure of a switch, the BIST generates a signal indicating a failure of the switching network.

System for testing an electronic circuit comprising a digital to analog converter and corresponding method and computer program product

A system, method, and device to test an electronic circuit are disclosed having a stage to supply a driving signal to a load comprising a pull-up switch and a pull-down switch and a pre-driver stage including pre-driver circuits. The electronic circuit including circuits for testing the pre-driver stage under the control of an automatic testing equipment (ATE) to operate a built-in self-test sequence including test commands for the pre-driver stage under the control of an external test signal issued by the ATE. The system includes a time measuring circuit to measure duration of signals at the output of the stage coupled to a pass-fail check circuit, and to evaluate if the duration of signals at the output of the stage to determine whether the output satisfies a pass criterion.

System for testing an electronic circuit and corresponding method and computer program product

In an embodiment a method for testing a digital electronic circuit includes coupling an external test equipment to a digital electronic circuit in order to apply an external voltage signal to the digital electronic circuit when an automatic test pattern generation (ATPG) procedure with a given test pattern is performed, wherein a value of the external voltage signal is controlled by the external test equipment and measuring, at the external test equipment, the digital supply voltage at an output of the voltage regulator and at an input of the internal digital circuitry, wherein the external voltage signal is applied to the differential inputs of the op-amp voltage regulator through an adaptation circuit to obtain determined values of the digital supply voltage.

Method for testing a digital electronic circuit to be tested, corresponding test system and computer program product

An electronic device includes an electronic component having terminals including a set of first terminals and a set of second terminals, a protective package embedding the electronic component, leads exposed from the protective package including a set of first leads and a set of second leads, for each first lead a first electrical connection inside the protection package between the first lead and a corresponding one of the first terminals, and for each second lead electrical connections inside the protective package each one between the second lead and a corresponding one of the second terminals. For each second lead the electronic component includes test structures, each being coupled between a corresponding one of the second terminals connected to the second lead and a corresponding test one of the first terminals connected to a test one of the first leads.

Growing community of inventors

Cornate d'Adda, Italy

Matteo Brivio