Stmicroelectronics (rousset) Sas

Atmel Corporation

Atmel Rousset S.a.s.

Atmei Rousset S.a.s.

Stmicroelectronics (grenoble 2) Sas

Jimmy Fort

Thierry Soude

Alexandre Sarafianos

Nicolas Borrel

Nicolas Demange

Fabrice Marinet

Mathieu Pierre Lisart

Michel Cuenca

Yanis Linge

Thomas Ordas

Julien Mercier

Fabrice Siracusa

Francesco La Rosa

Alexandre Tramoni

Jean-Michel Daga

Florent Garcia

Renaud Dura

Franck Strazzieri

Nicolas Zammit

Daniel Payrard

Clement Champeix

Lotfi Ben Ammar

Arnaud Turier

Maud Pierrel

Sylvain Leomant

Laurent Vachez

Jean-Max Dutertre

Provided is a voltage regulator supplying a first voltage on a first output node and comprising a first input transistor of a non-inverting stage and a second biasing transistor of the non-inverting stage. The first and second transistors are coupled in series, in this order, between the first node and a second node of application of a second reference voltage. The second transistor is being configured to be controlled by a third voltage depending on the first voltage.

Low dropout voltage regulator having a transistor assembly

An embodiment provides a circuit of cyclic activation of an electronic function including a hysteresis comparator controlling the charge of a capacitive element powering the function.

Circuit and method for cyclic activation of an electronic function

An embodiment electronic circuit power supply device is configured to: flow, through a first conductor connected to a node, a first current that is an image of a second current consumed by the electronic circuit; flow a third current through a second conductor connected to the node; regulate a potential of the node to a constant value by acting on the third current; flow a fourth constant current through a third conductor connected to the node; and consume a fifth current that is an image of the third current.

Device and method for protecting confidential data in an electronic circuit powered by a power supply

A physically unclonable function device includes a set of diode-connected MOS transistors having a random distribution of respective threshold voltages. A first circuit is configured to impose, on each first transistor, a fixed respective gate voltage regardless of the value of a current flowing in this first transistor. A second circuit is configured to impose, on each second transistor, a fixed respective gate voltage regardless of the value of a current flowing in this second transistor. A current mirror stage is coupled between the first circuit and the second circuit and is configured to deliver the reference current from a sum of the currents flowing in the first transistors. A comparator is configured to deliver a signal whose level depends on a comparison between a first current obtained from a reference current based on the first transistors and a second current of the second transistors.

Physically unclonable function device

An embodiment method for smoothing consumed current is based on a current copying suite and on a current source supplying a reference current, the currents being transformed into a reference voltage for the regulation of a voltage regulator such that the consumed current viewed by the power supply only depends on the reference current.

Method of smoothing a current consumed by an integrated circuit, and corresponding device

The present invention concerns an electronic circuit power supply device, configured to: flow, through a first conductor connected to a node, a first current that is an image of a second current consumed by the electronic circuit; flow a third current through a second conductor connected to the node, a first branch of a current mirror conducting the third current; flow a fourth constant current through a third conductor connected to the node; consume a fifth current that is an image of the third current; and regulate a potential of the node by acting on a gate potential of a transistor electrically in series with a second branch of the current mirror.

Device and method for electronic circuit power

An embodiment of the present disclosure relates to a circuit of cyclic activation of an electronic function comprising a hysteresis comparator controlling the charge of a capacitive element powering the function.

Cyclic control of cells of an integrated circuit

The physically unclonable function device (DIS) comprises a set of MOS transistors (TR, TR) mounted in diodes having a random distribution of respective threshold voltages, and comprising N first transistors and at least one second transistor. At least one output node of the function is capable of delivering a signal, the level of which depends on the comparison between a current obtained using a current circulating in the at least one second transistor and a current obtained using a reference current that is equal or substantially equal to the average of the currents circulating in the N first transistors. A first means (FM) is configured to impose on each first transistor a respective fixed gate voltage regardless of the value of the current circulating in the first transistor, and a second means (SM) is configured to impose a respective fixed gate voltage on each second transistor regardless of the value of the current circulating in the second transistor.

A device includes a current source, a first transistor connected between a first supply rail and an output terminal, and a second transistor connected between the output terminal and a first terminal of the current source, wherein a second terminal of the current source is connected to a second supply rail. A variable-gain amplifier circuit responds to a potential at the first terminal of the current source by applying a potential to the control terminal of the first transistor. A gain of the amplifier circuit is determined by a potential at the output terminal.

Voltage regulator

A device includes a first transistor connected between a first node and an output terminal and a first current source connected between the first node and a supply rail. A circuit includes a second current source connected between the supply rail and a second node, an operational amplifier having a non-inverting input configured to receive a potential set point, and a second transistor connected between the second node and an inverting input of the operational amplifier. An output of the operational amplifier is connected to a control terminal of the second transistor and further connected to a control terminal of the first transistor.

An electronic device includes a starting circuit configured to compare a value representative of the power supply voltage with a threshold, wherein the circuit includes a generator of a current proportional to temperature.

Device comprising a start-up circuit, and method of manufacturing thereof

The supply voltage for a module of an integrated circuit managed to support protection against side channel attacks. Upon startup of the integrated circuit, one action from the following actions is selected in response to a command: supplying the module with the supply voltage having a fixed value that is selected from a plurality of predetermined values, or varying the value of the supply voltage in time with a pulsed signal.

Method for managing the value of the supply voltage for a module of an integrated circuit, and associated integrated circuit

An electronic device includes a logic circuit and an auxiliary circuit. The logic circuit includes a first terminal coupled to a supply voltage terminal, a second terminal intended coupled to a reference voltage terminal and an output terminal configured to deliver a signal in a high state or a low state. The auxiliary circuit is coupled between the first terminal and the second terminal and is configured to randomly generate or not generate an additional current between the first terminal and the second terminal on each change of state of the signal on the output terminal.

Device and method for managing the current consumption of an integrated module

A circuit for detecting a glitch in power supply includes a detection circuit to detect the glitch in a DC supply voltage of the power supply when a magnitude in the glitch in a DC supply voltage of the power supply exceeds a detection threshold, wherein the detection threshold is a function of the DC supply voltage, and wherein the detection circuit comprises a low pass filter, a control circuit coupled to the low pass filter, and a current mirror circuit coupled to the control circuit having an output for providing a logic signal indicative of a detected glitch.

Glitch detection of a DC voltage

A secure electronic chip including a plurality of biased semiconductor wells and a well biasing current detection circuit. Each of the wells includes a transistor and a bias contact electrically isolated from the transistor. The detection circuit is electrically coupled to each bias contact and is configured to detect a bias current passing through the bias contact that is indicative of an attempt to tamper with the electronic chip.

Growing community of inventors

Puyloubier, France

Jimmy Fort