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公开(公告)号：US20210157669A1
公开(公告)日：2021-05-27
申请号：US16695968
申请日：2019-11-26
Applicant: Allegro MicroSystems, LLC
Inventor： Nicolas Rigoni , Fernando Orge , Lucas Intile , Nicolás Rafael Biberidis , Leandro Tozzi
Abstract: In one aspect, an integrated circuit (IC) includes a multiplexor configured to receive data from a non-volatile memory and configured to receive data from a shadow memory, a shift register configured to generate a first signature from the data received from the non-volatile memory and configured to generate a second signature from the data received from the shadow memory; a signature storage configured to store the first signature; and a shadow memory checking controller configured to enable the multiplexor to send the data from the non-volatile memory to the shift register, and send a command to reload the shadow memory with data from the non-volatile memory in response to receiving an error flag. The IC also includes a comparator circuit configured to compare the first signature and the second signature and configured to send the error flag in response to the first signature and the second signature being different.
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公开(公告)号：US10706948B2
公开(公告)日：2020-07-07
申请号：US16033722
申请日：2018-07-12
Applicant: Allegro MicroSystems, LLC
Inventor： Nicolas Rafael Biberidis , Octavio H. Alpago , Nicolas Rigoni
Abstract: A method for multi-level memory safety for a sensor integrated circuit can include loading a blocking bit into a volatile memory from a non-volatile memory and providing the blocking bit to a gating circuit from the volatile memory. Further, the method may include the gating circuit determining whether to provide a default value to a functional logic based upon the provided blocking bit.
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公开(公告)号：US20190113592A1
公开(公告)日：2019-04-18
申请号：US16214768
申请日：2018-12-10
Applicant: Allegro MicroSystems, LLC
Inventor： Nicolas Rigoni , Octavio H. Alpago , Nicolas Rafael Biberidis , Hernán D. Romero
Abstract: A magnetic field sensor includes a first magnetic field sensing element first generating a first signal having a first axis of maximum sensitivity, a second magnetic field sensing element for generating a second signal and having a second axis of maximum sensitivity, one or more detectors for receiving an output of the first magnetic field sensing element or the second magnetic field sensing element, and a processor that receives an output of the one or more detectors and uses the output of the one or more detectors to calculate a first constant Kc and a second constant Ks and then uses Kc and Ks to compensate for an orthogonality error between the first axis of maximum sensitivity and second axis of maximum sensitivity. The detectors include peak detectors and/or zero-crossing detectors that compare the output of the first input signal or the second input signal with a threshold or zero.
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公开(公告)号：US20210372766A1
公开(公告)日：2021-12-02
申请号：US16887898
申请日：2020-05-29
Applicant: Allegro MicroSystems, LLC
Inventor： Nicolas Rigoni , Octavio H. Alpago , Leandro Tozzi
Abstract: An angle sensor comprising: a plurality of magnetic field sensing elements configured to detect a magnetic field and generate a respective plurality of analog magnetic field signals; a plurality of analog frontend circuits each analog frontend circuit associated with a respective magnetic field sensing element; and a digital feedback circuit configured to generate digital magnetic field signals from the plurality of analog magnetic field signals and generate digital error correction values, wherein the plurality of analog frontend circuits are configured to obtain the digital error correction values from the digital feedback circuit, generate analog correction values from the digital error correction values, and apply the analog correction values to the plurality of analog magnetic field signals to generate a plurality of corrected analog magnetic field signals.
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公开(公告)号：US11016145B1
公开(公告)日：2021-05-25
申请号：US16720531
申请日：2019-12-19
Applicant: Allegro MicroSystems, LLC
Inventor： Ignacio Lesser , Nicolas Rigoni , Octavio H. Alpago , Lautaro Casella
IPC: G01R31/3177 , G01R31/317
Abstract: An integrated circuit sensor can have a test program generator that is configured to receive a portion of a scan vector, where the scan vector includes a test mode signal and a scan enable signal. The test program generator is configured to retrieve a launch-off-capture test sequence from the scan vector and use the launch-off-capture test sequence and the test mode signal to generate a launch-off-capture test signal. A test signal generator is configured to generate a launch-off-shift test signal using the launch-off-capture test signal and the scan enable signal. A built-in self-test circuit is configured to test the integrated circuit sensor using the launch-off-shift test signal.
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Patent Agency Ranking
公开(公告)号：US20200348150A1
公开(公告)日：2020-11-05
申请号：US16398522
申请日：2019-04-30
Applicant: Allegro MicroSystems, LLC
Inventor： Juan Manuel Cesaretti , Nicolas Rigoni , Jesse Lapomardo
Abstract: A magnetic field sensor that detects an angle of a target includes a first channel having first and second magnetic field sensing elements that are orthogonal with respect to each other and produce first and second magnetic field signals, and a second channel having third and fourth magnetic field sensing elements that are orthogonal with respect to each other and produce third and fourth magnetic field signals. The third sensing element is positioned at an angle (e.g., 45-degrees) with respect to the first sensing element. The magnetic field sensor includes a low power mode circuit that uses comparators to compare the first, second, third, and fourth magnetic field signals to a first, second, third, and fourth threshold, respectively. A processor is configured to use an output of the low power mode circuit to determine the angle of the target.
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7.发明授权公开(公告)号：US11327882B2
公开(公告)日：2022-05-10
申请号：US16782139
申请日：2020-02-05
Applicant: Allegro MicroSystems, LLC
Inventor： Muhammed Sarwar , Vyankatesh Gupta , James McClay , Sundar Chetlur , Harianto Wong , Gerardo A. Monreal , Nicolás Rafael Biberidis , Octavio H. Alpago , Nicolas Rigoni
Abstract: A method comprising: performing a first read from an address in a data storage module by using a first read voltage; storing, in a first register, data that is retrieved from the data storage module as a result of the first read; performing a second read from the address by using a second read voltage; storing, in a second register, data that is retrieved from the data storage module as a result of the second read; detecting whether a weak bit condition is present at the address based on the data that is stored in the first register and the data that is stored in the second register; and correcting the weak bit condition, when the weak bit condition is present at the address.
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公开(公告)号：US11169877B2
公开(公告)日：2021-11-09
申请号：US16821155
申请日：2020-03-17
Applicant: Allegro MicroSystems, LLC
Inventor： Nicolas Rigoni , Nicolás Rafael Biberidis , Ahmed Hassan Fahmy , Octavio H. Alpago
Abstract: A method is disclosed for use in an electronic device having a non-volatile storage device and a volatile storage device, the method comprising: retrieving a first encoded data packet from a first address in the non-volatile storage device; decoding the first encoded data packet to obtain a first data item and a first error code corresponding to the first data item, the first encoded data packet being decoded by using a first coding key that is associated with the first address; detecting whether the first data item is corrupt based on the first error code and an error correction function, storing the first data item at a first address in the volatile storage device when the first data item is not corrupt, and transitioning the electronic device into a safe state when the first data item is corrupt.
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9.发明申请公开(公告)号：US20210240606A1
公开(公告)日：2021-08-05
申请号：US16782139
申请日：2020-02-05
Applicant: Allegro MicroSystems, LLC
Inventor： Muhammed Sarwar , Vyankatesh Gupta , James McClay , Sundar Chetlur , Harianto Wong , Gerardo A. Monreal , Nicolás Rafael Biberidis , Octavio H. Alpago , Nicolas Rigoni
Abstract: A method comprising: performing a first read from an address in a data storage module by using a first read voltage; storing, in a first register, data that is retrieved from the data storage module as a result of the first read; performing a second read from the address by using a second read voltage; storing, in a second register, data that is retrieved from the data storage module as a result of the second read; detecting whether a weak bit condition is present at the address based on the data that is stored in the first register and the data that is stored in the second register; and correcting the weak bit condition, when the weak bit condition is present at the address.
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公开(公告)号：US20210102798A1
公开(公告)日：2021-04-08
申请号：US16593308
申请日：2019-10-04
Applicant: Allegro MicroSystems, LLC
Inventor： Nicolas Rigoni , Octavio H. Alpago
Abstract: An angle sensor can have a plurality of magnetic field sensing elements configured to detect a magnetic field and generate a respective plurality of magnetic field signals. In response to these magnetic field signals, a processor generates an uncorrected angle signal that is indicative of an angle of the magnetic field. An error corrector generates an error value using one or more of the previous samples of the uncorrected angle signal, and a summation element applies the error value to a current sample of the uncorrected angle signal to generate a corrected angle signal. The error corrector can generate the error value by applying a correction factor to a previous sample of the uncorrected angle signal, or by applying a correction factor to a predicted current sample of the uncorrected angle signal.
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