Patents Assigned to STMicroelectronics (Research & Development) Limted
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Patent number: 12211582Abstract: An in-memory computation (IMC) circuit includes a memory array formed by memory cells arranged in row-by-column matrix. Computational weights for an IMC operation are stored in the memory cells. Each column includes a bit line connected to the memory cells. A switching circuit is connected between each bit line and a corresponding column output. The switching circuit is controlled to turn on to generate the analog signal dependent on the computational weight and for a time duration controlled by the coefficient data signal. A column combining circuit combines (by addition and/or subtraction) and integrates analog signals at the column outputs of the biasing circuits. The addition/subtraction is dependent on one or more a sign of the coefficient data and a sign of the computational weight and may further implement a binary weighting function.Type: GrantFiled: April 12, 2022Date of Patent: January 28, 2025Assignee: STMicroelectronics S.r.l.Inventors: Marco Pasotti, Marcella Carissimi, Alessio Antolini, Eleonora Franchi Scarselli, Antonio Gnudi, Andrea Lico
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Patent number: 12210373Abstract: An integrated circuit includes a first subsystem including a first clock generator configured to generate a first clock signal. The integrated circuit also includes a second subsystem including a second clock generator configured to generate a second clock signal. The first subsystem includes an edge detector configured to detect an edge of the second clock signal. The first clock generator generates the first clock signal with a selected phase relative to the second clock signal based on the edge of the second clock signal.Type: GrantFiled: February 7, 2023Date of Patent: January 28, 2025Assignee: STMicroelectronics International N.V.Inventors: Ankur Bal, Sharad Gupta, Anupam Jain
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MEMS actuator for in-plane movement of a mobile mass and optical module comprising the MEMS actuator
Patent number: 12209008Abstract: A MEMS actuator includes a mobile mass suspended over a substrate in a first direction and extending in a plane that defines a second direction and a third direction perpendicular thereto. Elastic elements arranged between the substrate and the mobile mass have a first compliance in a direction parallel to the first direction that is lower than a second compliance in a direction parallel to the second direction. Piezoelectric actuation structures have a portion fixed with respect to the substrate and a portion that deforms in the first direction in response to an actuation voltage. Movement-transformation structures coupled to the piezoelectric actuation structures include an elastic movement-conversion structure arranged between the piezoelectric actuation structures and the mobile mass. The elastic movement-conversion structure is compliant in a plane formed by the first and second directions and has first and second principal axes of inertia transverse to the first and second directions.Type: GrantFiled: May 24, 2022Date of Patent: January 28, 2025Assignee: STMicroelectronics S.r.l.Inventors: Nicolo' Boni, Gabriele Gattere, Manuel Riani, Roberto Carminati -
Publication number: 20250028653Abstract: A method of securization of programs in a memory embedded within a microcontroller includes writing a boot program into a first area of the memory and writing at least one additional program into at least one second area of the memory. One or more values of a first register are modified to provide a write protection of the first and second areas. A prohibition against modification of the one or more values of the first register is then implemented when those values are associated with a write protection state of the first area.Type: ApplicationFiled: July 18, 2024Publication date: January 23, 2025Applicant: STMicroelectronics International N.V.Inventor: Jawad BENHAMMADI
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Publication number: 20250027817Abstract: The present disclosure is directed to a device for detecting the passage of an infrared, IR, radiation emitting body in a monitoring zone. The device has a first surface and a second surface mutually tilted and configured to face the monitoring zone. The device includes a first IR radiation sensor extending on the first surface and a second IR radiation sensor extending on the second surface. The first IR radiation sensor is configured to detect the IR radiation of the emitting body when the emitting body is in a first field of view of the first IR radiation sensor and the second IR radiation sensor is configured to detect the IR radiation of the emitting body when the emitting body is in a second field of view of the second IR radiation sensor. The first and the second fields of views are configured to be partially superimposed on each other at the monitoring zone.Type: ApplicationFiled: June 28, 2024Publication date: January 23, 2025Applicant: STMicroelectronics International N.V.Inventors: Carlo GUADALUPI, Stefano Paolo RIVOLTA, Mauro BARDONE, Andrea LABOMBARDA
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Publication number: 20250029664Abstract: An integrated circuit includes a memory array and a memory read circuitry for reading data from the memory array. The memory read circuitry includes a leakage current compensation circuit. The leakage current compensation circuit senses the leakage current in a bitline of the memory array during a read operation and generates a leakage compensation current to offset the leakage current during the read operation.Type: ApplicationFiled: August 16, 2024Publication date: January 23, 2025Applicant: STMicroelectronics International N.V.Inventors: Arpit VIJAYVERGIA, Vikas RANA
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Publication number: 20250030417Abstract: A startup circuit includes a first circuit leg coupled between an input node and an output node and a second circuit leg coupled between the input node and the output node. The first circuit generates a first current and the second circuit leg sinks current from a first node based upon the first current. A third circuit leg is coupled between the input node and the output node and sources current to a second node based upon a voltage at the first node to thereby generate a feedback voltage at the second node. The first circuit leg increases the first current based upon the feedback voltage, in turn increasing the current sunk from the first node by the second circuit leg and increasing the current sourced to the second node by the third circuit leg to thereby generate a startup current at the output node.Type: ApplicationFiled: July 20, 2023Publication date: January 23, 2025Applicant: STMicroelectronics International N.V.Inventors: Federico FARY, Sandro ROSSI, Niccolò BRAMBILLA, Giovanni SICURELLA
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Publication number: 20250027994Abstract: An integrated circuit improves scan testing efficiency by addressing slow Scan-OUT pins. The integrated circuit shifts data through high-frequency Scan-OUT pins every cycle and through low-frequency Scan-OUT pins every other cycle. Data that cannot be shifted through low-frequency pins is stored in an accumulator and later shifted out through high-frequency pins. Despite changing the scan-out data pattern, the tester used for testing the integrated circuit anticipates the resulting pattern, providing for the testing to not be negatively impacted.Type: ApplicationFiled: July 17, 2023Publication date: January 23, 2025Applicant: STMicroelectronics International N.V.Inventors: Sandeep JAIN, Shalini PATHAK, Pooja JAIN
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Publication number: 20250028344Abstract: An LDO regulator has a pass device arranged between an input node and an output node. The pass device is controlled at a control node by an error amplifier. A first current generator sources compensation current to the control node, a cascode device is arranged between the control node and a compensation node, and a second current generator sinks compensation current from the compensation node. A compensation capacitor is arranged between the output and compensation nodes. Load current through the pass device is sensed to generate a feedback current at a first feedback node. An input branch of a current mirror receives the feedback current. A filtering circuit is coupled between a control terminal of the input branch and a second feedback node. Output branches of the current mirror sink and source additional compensation current from the compensation node and the control node, respectively, proportional to the feedback current.Type: ApplicationFiled: July 12, 2024Publication date: January 23, 2025Applicant: STMicroelectronics International N.V.Inventors: Alessandra FARINA, Roberto Pio BAORDA, Stefano RAMORINI
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Patent number: 12203985Abstract: An integrated circuit improves scan testing efficiency by addressing slow Scan-OUT pins. The integrated circuit shifts data through high-frequency Scan-OUT pins every cycle and through low-frequency Scan-OUT pins every other cycle. Data that cannot be shifted through low-frequency pins is stored in an accumulator and later shifted out through high-frequency pins. Despite changing the scan-out data pattern, the tester used for testing the integrated circuit anticipates the resulting pattern, providing for the testing to not be negatively impacted.Type: GrantFiled: July 17, 2023Date of Patent: January 21, 2025Assignee: STMicroelectronics International N.V.Inventors: Sandeep Jain, Shalini Pathak, Pooja Jain
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Patent number: 12204782Abstract: According to an embodiment, a method for testing and repairing local memory in a hardware accelerator from a one-time programmable memory (OTP) is provided. The method includes asserting a grant signal, a loading of a first repair data for a sub-set of the local memory associated with a main-controller from a first partition of the OTP memory, communicating a status signal after completion of the loading indicating a completion of the loading, and de-asserting the grant signal in response to receiving the status signal.Type: GrantFiled: June 20, 2023Date of Patent: January 21, 2025Assignee: STMicroelectronics International N.V.Inventors: Urmishkumar Karsanbhai Patel, Danish Hasan Syed, Prateek Singh
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Patent number: 12205651Abstract: A method for accessing memory cells in an array of memory cells storing respective data signals, wherein memory cells in the array of memory cells have a first, resp. second, node selectively couplable to respective bitline branches in a first, resp. second, set of bitline branches, wherein the first and the second set of bitline branches provide at least one bitline capacitance configured to store a bias level of charge in response to being charged.Type: GrantFiled: September 8, 2022Date of Patent: January 21, 2025Assignee: STMicroelectronics S.r.l.Inventors: Gianbattista Lo Giudice, Antonino Conte
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Patent number: 12203982Abstract: Circuits and methods for testing voltage monitor circuits are provided. In one embodiment, a method includes setting voltage monitor circuits to test mode; setting, a monitor reference in each voltage monitor circuit, to a respective targeted threshold voltage using a corresponding trim code; ramping, a voltage provided to a subset of voltage monitor circuits, from a first voltage to a second voltage using a test voltage supply, voltages between the first voltage and the second voltage corresponding with targeted threshold voltages of the subset of voltage monitor circuits; determining, for each voltage monitor circuit in the subset of voltage monitor circuits, a voltage value of the test voltage supply resulting in a change in a logic state at an output of a corresponding voltage monitor circuit.Type: GrantFiled: May 16, 2022Date of Patent: January 21, 2025Assignee: STMicroelectronics International N.V.Inventors: Rajesh Narwal, Venkata Narayanan Srinivasan, Srinivas Dhulipalla
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Publication number: 20250018427Abstract: Micromachined ultrasonic transducer wherein a die including semiconductor material accommodates at least one ultrasonic cell. Each ultrasonic cell includes a piezoelectric structure, a cavity, and a membrane region, vertically aligned with each other. The cavity extends inside the die and downwardly delimits the membrane region. The piezoelectric structure is arranged on the membrane region and has at least one annular-shaped piezoelectric region. The micromachined ultrasonic transducer is configured to operate around the second axisymmetric vibration mode.Type: ApplicationFiled: July 1, 2024Publication date: January 16, 2025Applicant: STMicroelectronics International N.V.Inventors: Alessandro Stuart SAVOIA, Domenico GIUSTI, Carlo Luigi PRELINI
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Publication number: 20250023449Abstract: A power stage includes parallel FETs including a reference FET. An input PWM signal has a switching period. A current sensor senses current flowing through the power stage during switch-on period. A first circuit generates a first PWM signal having a duty-cycle indicative of reference FET driving losses for a reference current. A second circuit generates a second PWM signal having a duty-cycle indicative of reference FET conduction losses for that reference current. The duty cycles of the first and second PWM signals are compared to generate a comparison signal. The reference current is changed until a logic state of the comparison signal changes. A respective enable signal for each FET is generated by comparing the reference current to the sensed current flowing through the power stage. A FET driver circuit generates a respective drive signal for each FET by combining the respective enable signal with the input PWM signal.Type: ApplicationFiled: July 9, 2024Publication date: January 16, 2025Applicant: STMicroelectronics International N.V.Inventors: Simone SCADUTO, Salvatore TRICOMI, Simone MANELLO, Francesco GIORGIO, Carmelo Alberto SANTAGATI, Stefano SAGGINI, Federico IOB, Agatino Antonino ALESSANDRO, Bruno CAVALLARO
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Publication number: 20250023562Abstract: Provided is an integrated circuit that includes: a terminal designed to receive a signal at a rated voltage level which can rise to a maximum voltage level; an output circuit including a first transistor and a second transistor coupled in series between the terminal and an output stage; and a protection circuit designed to generate a first voltage controlling the first transistor, and a second voltage controlling the second transistor. In an activated state, the first voltage and the second voltage are obtained by dividing the voltage level of said terminal. In a deactivated state, the first voltage is obtained by the voltage level of said terminal, and the second voltage is obtained by the level of a control voltage minus a threshold voltage of a protection transistor.Type: ApplicationFiled: July 1, 2024Publication date: January 16, 2025Applicant: STMicroelectronics International N.V.Inventor: Isabelle CLAVERIE-BELLIARD
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Publication number: 20250022894Abstract: A pixel includes, on a first face, first trenches extending parallel to a first direction and regularly spaced in a second direction (orthogonal to the first direction) and second trenches extending parallel to the second direction and regularly spaced in the first direction. The first trenches include first notches, each first notch extending from a first trench and being aligned with a corresponding second trench. The second trenches include second notches, each second notch extending from a second trench and being aligned with a corresponding first trench.Type: ApplicationFiled: July 1, 2024Publication date: January 16, 2025Applicant: STMicroelectronics International N.V.Inventors: Giulio FORCOLIN, Raul Andres BIANCHI, Isobel NICHOLSON
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Publication number: 20250022509Abstract: A Phase Change Memory (PCM) device includes sets of cells in which a binary logic level is written by a write operation. Each cell is included in a respective set of cells in the sets of cells. The write operation includes: performing write verify operations on the cells to identify an actual logic level stored in the cells; checking if the identified actual logic level matches a certain the binary logic level; in response to the checking determining that in at least one cell the actual logic level fails to match the binary logic level, correcting the actual logic level to match the binary logic level by performing: a set write operation in case the binary logic level is a high logic level, or a reset write operation in case the binary logic level is a low logic level.Type: ApplicationFiled: July 11, 2024Publication date: January 16, 2025Applicant: STMicroelectronics International N.V.Inventors: Francesco TOMAIUOLO, Marco RUTA, Michelangelo PISASALE, Marion Helne GRIMAL, Luigi BUONO, Antonino CONTE, Diego DE COSTANTINI, Marco Eugenio GIBILARO
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Publication number: 20250022947Abstract: An HEMT includes: a heterostructure; a dielectric layer on the heterostructure; a gate electrode, which extends throughout the thickness of the dielectric layer; a source electrode; and a drain electrode. The dielectric layer extends between the gate electrode and the drain electrode and is absent between the gate electrode and the source electrode. In this way, the distance between the gate electrode and the source electrode can be designed in the absence of constraints due to a field plate that extends towards the source electrode.Type: ApplicationFiled: July 23, 2024Publication date: January 16, 2025Applicant: STMicroelectronics S.r.l.Inventor: Ferdinando IUCOLANO
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Publication number: 20250023474Abstract: A power conversion circuit includes a first node configured to receive a first voltage referenced to a second node configured to be coupled to a reference potential. A first power converter couples the first node to a third node. A second power converter couples a fourth node to an output node. A first capacitor couples the third node to the fourth node. A first switch connects the output node to the first node. An output switch connects the output node to a load.Type: ApplicationFiled: July 3, 2024Publication date: January 16, 2025Applicant: STMicroelectronics International N.V.Inventor: Vratislav MICHAL