Patents Assigned to STMicroelectronics (Research & Development) Limted
  • Publication number: 20240425359
    Abstract: A MEMS device is formed by a body of semiconductor material which defines a support structure. A pass-through cavity in the body is surrounded by the support structure. A movable structure is suspended in the pass-through cavity. An elastic structure extends in the pass-through cavity between the support structure and the movable structure. The elastic structure has a first and second portions and is subject, in use, to mechanical stress. The MEMS device is further formed by a metal region, which extends on the first portion of the elastic structure, and by a buried cavity in the elastic structure. The buried cavity extends between the first and the second portions of the elastic structure and communicates laterally with the pass-through cavity.
    Type: Application
    Filed: September 9, 2024
    Publication date: December 26, 2024
    Applicant: STMicroelectronics S.r.l.
    Inventors: Nicolo' BONI, Lorenzo VINCIGUERRA, Roberto CARMINATI, Massimiliano MERLI
  • Publication number: 20240425352
    Abstract: An inertial MEMS device includes an inertial element provided by a movable structure that is responsive to movement. The moveable structure is formed in a first structural layer of semiconductor material. A suspended structure extends above the movable structure at a distance therefrom. The suspended structure is formed in a second structural layer of semiconductor material and carries a piezoelectric structure. The suspended structure and the piezoelectric structure form a wake-up element that generates an activation signal in presence of vibrations or shocks. The inertial element and the wake-up element are contained in a chamber formed by a substrate and a cap, together with peripheral portions of the first and the second structural layers.
    Type: Application
    Filed: June 12, 2024
    Publication date: December 26, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Luca SEGHIZZI, Federico VERCESI, Gianluca LONGONI, Andrea NOMELLINI
  • Publication number: 20240426868
    Abstract: A MEMS sensor comprising a semiconductor body and a mass elastically coupled to the semiconductor body for oscillating with respect to the semiconductor body in a oscillation direction in response to a force acting on the mass in the oscillation direction, the force being caused by an acceleration applied to the MEMS sensor. The mass and the semiconductor body define at least one measurement structure with parallel-plate electrodes, which is configured to measure capacitively a position of the mass that is indicative of the acceleration applied to the MEMS sensor. The mass and the semiconductor body further define a calibration structure with comb-finger electrodes that is electrically controllable, in a calibration mode of the MEMS sensor, to bring about electrostatically a displacement of the mass with respect to the semiconductor body in the oscillation direction.
    Type: Application
    Filed: June 10, 2024
    Publication date: December 26, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Francesco RIZZINI, Gabriele GATTERE
  • Publication number: 20240426652
    Abstract: A microelectromechanical sensor assembly includes a semiconductor die having a scaled cavity. A microelectromechanical inertial sensor has a sensing mass. A piezoelectric vibration sensor has a piezoelectric membrane. The sensing mass and the piezoelectric membrane are stacked one on top of the other and housed in the sealed cavity.
    Type: Application
    Filed: June 13, 2024
    Publication date: December 26, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Gianluca LONGONI, Luca SEGHIZZI, Francesco BIANCHI, Federico VERCESI, Andrea NOMELLINI, Silvia NICOLI
  • Publication number: 20240429232
    Abstract: An integrated circuit includes a substrate having a front face. A capacitive element includes, over a surface at the front face, a stack made of: a first conductive armature, a dielectric interface region over the first conductive armature, and a second conductive armature over the dielectric interface region. The first conductive armature includes a gate metal layer located over a layer of a material with a high dielectric constant.
    Type: Application
    Filed: June 19, 2024
    Publication date: December 26, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Abderrezak MARZAKI, Alexandre VILLARET
  • Publication number: 20240429881
    Abstract: Signal processing is applied to a digital input audio signal. An analog audio output signal is provided based on the digital input audio signal via a switching converter circuit driven by a PWM signal. The analog audio output signal is sensed to generate an analog feedback signal. The applied signal processing includes: producing a digital error signal indicative of a difference between the digital input audio signal and a digital word signal; applying digital-to-analog conversion to the digital error signal to produce an analog replica of the digital error signal; producing an analog difference signal indicative of a difference between the analog replica of the digital error signal and the analog feedback signal; applying analog-to-digital conversion to the analog difference signal to produce the digital word signal; applying digital filtering to the digital word signal to produce a filtered digital word signal that generates the PWM signal.
    Type: Application
    Filed: June 11, 2024
    Publication date: December 26, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Edoardo BOTTI, Francesco STILGENBAUER, Matteo DE FERRARI, Edoardo BONIZZONI, Piero MALCOVATI
  • Publication number: 20240427363
    Abstract: A method for polarizing at least one first electronic circuit based on a first direct polarization current, the at least one first circuit being powered by a supply voltage having actual values dispersed around a rated value, the at least one first circuit having at least one first physical parameter whose value could undergo a variation resulting from the dispersion of voltage values, the method comprising an open-loop compensation of the dispersion of the voltage value including elaborating a first corrected current based on a reference current and a first correction coefficient determined from the variation of the value of the at least one first physical parameter, resulting from the dispersion of the voltage values, and elaborating the first polarization current based on the first corrected current.
    Type: Application
    Filed: June 17, 2024
    Publication date: December 26, 2024
    Applicant: STMicroelectronics International N.V.
    Inventor: Jean-Yves COUET
  • Patent number: 12176030
    Abstract: A method for operating a sense amplifier in a one-switch one-resistance (1S1R) memory array, includes: generating a regulated full voltage and a regulated half voltage; applying the regulated full voltage and regulated half voltage to selected and unselected bit lines of the 1S1R memory array during read operations as an applied read voltage; and inducing and compensating for a sneak-path current during read operations by adjusting the applied read voltage based on the cell state of an accessed bit cell and an amplitude of the sneak-path current.
    Type: Grant
    Filed: December 11, 2023
    Date of Patent: December 24, 2024
    Assignees: Universite D'Aix Marseille, Centre National de la Recherche, STMicroelectronics (Crolles 2) SAS, STMicroelectronics (Rousset) SAS
    Inventors: Jean-Michel Portal, Vincenzo Della Marca, Jean-Pierre Walder, Julien Gasquez, Philippe Boivin
  • Patent number: 12176872
    Abstract: A current sensor architecture is implemented using a trans-resistance amplifier circuit having a low pass filter characteristic. The current sensing resistor and the input resistors for the amplifier circuit are matched thermally so that they have substantially identical temperature coefficients. The feedback resistors, which are coupled in parallel with corresponding capacitors, are implemented using switched capacitor circuits that emulate resistors. With this configuration, the current sensor is temperature insensitive.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: December 24, 2024
    Assignee: STMicroelectronics S.r.l.
    Inventor: Antonio Spina
  • Patent number: 12175095
    Abstract: System, method, and circuitry for generating content for a programmable computing device based on user-selected memory regions. Contiguous regions that share memory access attributes are merged, interleaved contiguous regions that share at least one nested attribute are defined into combined regions, and remaining regions are defined as separate independent regions. A memory protection unit (MPU) region size closest to a size of each defined region is identified. If the start address of each region aligns with the address structure of the MPU region size, then those regions are assigned to MPU regions having the MPU region size; otherwise, another MPU size that aligns with the size of the regions is selected and those regions are assigned to MPU regions having that size. Content is generated to configure settings of MPU regions of the programmable computing device for the merged contiguous regions, the combined region, and the independent regions.
    Type: Grant
    Filed: January 26, 2024
    Date of Patent: December 24, 2024
    Assignee: STMicroelectronics (Grand Ouest) SAS
    Inventors: Frederic Ruelle, Michel Jaouen
  • Patent number: 12176025
    Abstract: An in-memory computation circuit includes a memory array with SRAM cells connected in rows by word lines and in columns by bit lines. Body bias nodes of the transistors in each SRAM cell are biased by a modulated body bias voltage. A row controller circuit simultaneously actuates word lines in parallel for an in-memory compute operation. A column processing circuit processes analog voltages developed on the bit lines in response to the simultaneous actuation to generate a decision output for the in-memory compute operation. A voltage generator circuit switches the modulated body bias voltage from a non-negative voltage level to a negative voltage level during the simultaneous actuation. The negative voltage level is adjusted dependent on integrated circuit process and/or temperature conditions in order to optimize protection against unwanted memory cell data flip.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: December 24, 2024
    Assignee: STMicroelectronics International N.V.
    Inventors: Harsh Rawat, Kedar Janardan Dhori, Promod Kumar, Nitin Chawla, Manuj Ayodhyawasi
  • Patent number: 12176804
    Abstract: The present disclosure relates to a voltage converter and method for pulse frequency modulation-type operation during a start-up phase.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: December 24, 2024
    Assignee: STMicroelectronics (Rousset) SAS
    Inventors: Sebastien Ortet, Vincent Binet
  • Patent number: 12174950
    Abstract: Method for detecting the linear extraction of information in a processor using an instruction pointer. The method includes monitoring the values of the instruction pointer, determining a number of consecutive increments incrementing the values of the instruction pointer by a constant amount, and generating a detection signal if the number is greater than or equal to a detection threshold.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: December 24, 2024
    Assignees: STMicroelectronics (Alps) SAS, STMicroelectronics (Grenoble 2) SAS
    Inventors: Diana Moisuc, Christophe Eichwald
  • Patent number: 12174909
    Abstract: In an embodiment a method programming floating gate transistors belonging to non-volatile memory cells to multilevel threshold voltages respectively corresponding to the weight factors, performing a sensing operation of the programmed floating gate transistors with a control signal adapted to make the corresponding memory cells become conductive at an instant determined by a respective programmed threshold voltage, performing the convolutional computation by using the input values during an elapsed time for each memory cell to become conductive and outputting output values resulting from the convolutional computation.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: December 24, 2024
    Assignees: STMicroelectronics S.r.l., STMicroelectronics (Rousset) SAS
    Inventors: Francesco La Rosa, Antonino Conte
  • Patent number: 12176220
    Abstract: A molded carrier is formed by a unitary body made of a laser direct structuring (LDS) material and includes a blind opening with a bottom surface. The unitary body includes: a floor body portion defining a back side and the bottom surface of the blind opening and an outer peripheral wall body portion defining a sidewall surface of the blind opening. LDS activation followed by electro-plating is used to produce: a die attach pad and bonding pad at the bottom surface; land grid array (LGA) pads at the back side; and vias extending through the floor body portion to make electrical connections between the die attach pad and one LGA pad and between the bonding pad and another LGA pad. An integrated circuit chip is mounted to the die attach pad and wire bonded to the bonding pad. A wafer-scale manufacturing process is used to form the molded carrier.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: December 24, 2024
    Assignee: STMicroelectronics Pte Ltd
    Inventor: Jing-En Luan
  • Publication number: 20240421693
    Abstract: A driver circuit for a resonant converter includes an analog zero current comparator configured to generate a first control signal indicating when a resonant current of the resonant converter changes sign, a triangular wave generator circuit configured to provide at output a triangular signal, and a comparison circuit configured to generate a second control signal indicating whether the triangular signal reaches a reference threshold. The driver circuit is configured to drive a high-side and a low-side electronic switch via respective drive signals during a first and a second consecutive switching semi-period, wherein each of the first and the second switching semi-period ends when the comparison circuit indicates that the triangular signal has reached the reference threshold.
    Type: Application
    Filed: June 7, 2024
    Publication date: December 19, 2024
    Applicant: STMicroelectronics International N.V.
    Inventor: Claudio ADRAGNA
  • Publication number: 20240421584
    Abstract: The present disclosure relates to a short-circuit detection device in a direct current circuit, including a voltage source, a bus including at least two conducting elements each coupled to either one of the terminals of the voltage source, first and second thyristors coupled to the voltage source and to the bus, and at least one capacitive element forming a storage capacitor, whose electrodes are each coupled to either one of the conducting elements of the bus, wherein the short-circuit detection device includes at least one control circuit configured to control the biasing and the modes of operation of the first and second thyristors such that a short circuit detection phase is implemented before a pre-charge of the storage capacitor.
    Type: Application
    Filed: June 7, 2024
    Publication date: December 19, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Ghafour BENABDELAZIZ, Jean Pierre PROOT
  • Publication number: 20240421809
    Abstract: A switch device is described, formed by: a first switch MOS transistor, with its drain terminal connected to a first switch terminal, source terminal connected to an internal source node and gate terminal connected to an internal gate node; a second switch MOS transistor, with its drain terminal connected to a second switch terminal, source terminal connected to the internal source node and gate terminal connected to the internal gate node; and a voltage limiting element connected between the internal gate and source nodes. A driving stage, voltage-referred to the internal source node, drives the switching of the bidirectional switch, as a function a first and a second driving signals, and has a driving transistor and a switching transistor connected to each other in inverter configuration.
    Type: Application
    Filed: June 11, 2024
    Publication date: December 19, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Marco ZAMPROGNO, Pasquale FLORA, Fabio SEVERINI
  • Publication number: 20240422992
    Abstract: A memory circuit includes a memory array formed by electronic cells. Each electronic cell includes an integrated stack having, successively, a first electrode, an intermediate layer formed by an ovonic threshold switching layer, and a resistor connected to the intermediate layer. A control circuit is connected to the electronic cell. The control circuit is structured and configured to apply, between the first electrode and the resistor, a first voltage impulse of a first polarity to set a first logic state of the electronic cell and a second voltage impulse of a second polarity, opposite the first polarity, to set a second logic state of the electronic cell.
    Type: Application
    Filed: June 10, 2024
    Publication date: December 19, 2024
    Applicant: STMicroelectronics International N.V.
    Inventor: Andrea REDAELLI
  • Patent number: 12170120
    Abstract: The memory array of a memory includes sub-arrays with memory cells arranged in a row-column matrix where each row includes a word line and each sub-array column includes a local bit line. A row decoder circuit supports two modes of memory circuit operation: a first mode where only one word line in the memory array is actuated during a memory read and a second mode where one word line per sub-array are simultaneously actuated during the memory read. An input/output circuit for each column includes inputs to the local bit lines of the sub-arrays, a column data output coupled to the bit line inputs, and a sub-array data output coupled to each bit line input. Both BIST and ATPG testing of the input/output circuit are supported. For BIST testing, multiple data paths between the bit line inputs and the column data output are selectively controlled to provide complete circuit testing.
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: December 17, 2024
    Assignee: STMicroelectronics International N.V.
    Inventors: Hitesh Chawla, Tanuj Kumar, Bhupender Singh, Harsh Rawat, Kedar Janardan Dhori, Manuj Ayodhyawasi, Nitin Chawla, Promod Kumar