Patents by Inventor Michele Piccardi

Michele Piccardi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11573588
    Abstract: Apparatus and methods are disclosed for providing a bias, comprising a bias generator circuit including a high voltage (HV) circuit configured to generate a regulated high voltage (HV) from an HV line and provide the regulated HV at an HV regulated line and a low voltage (LV) circuit configured to generate a low voltage (LV) differential from the HV line and to provide the LV differential at an LV line.
    Type: Grant
    Filed: December 24, 2021
    Date of Patent: February 7, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Michele Piccardi, Xiaojiang Guo
  • Publication number: 20230017305
    Abstract: A variety of applications can include apparatus or methods that provide a well ring for resistive ground power domain segregation. The well ring can be implemented as a n-well in a p-type substrate. Resistive separation between ground domains can be generated by biasing a n-well ring to an external supply voltage. This approach can provide a procedure, from a process standpoint, that provides relatively high flexibility to design for chip floor planning and simulation, while providing sufficient noise rejection between independent ground power domains when correctly sized. Significant noise rejection between ground power domains can be attained.
    Type: Application
    Filed: April 27, 2022
    Publication date: January 19, 2023
    Inventors: Mattia Cichocki, Vladimir Mikhalev, Phani Bharadwaj Vanguri, James Eric Davis, Kenneth William Marr, Chiara Cerafogli, Michael James Irwin, Domenico Tuzi, Umberto Siciliani, Alessandro Alilla, Andrea Giovanni Xotta, Chung-Ping Wu, Luigi Marchese, Pasquale Conenna, Joonwoo Nam, Ishani Bhatt, Fulvio Rori, Andrea D'Alessandro, Michele Piccardi, Aleksey Prozapas, Luigi Pilolli, Violante Moschiano
  • Publication number: 20220405002
    Abstract: A system includes a memory array, a thermometer, and control logic, operatively coupled with the memory array and the thermometer, to perform operations including causing the thermometer to obtain a first temperature result, monitoring a time since obtaining the first temperature result, determining whether the time satisfies a threshold time condition, in response to determining that the time satisfies the threshold time condition, causing the thermometer to obtain a second temperature result from an automatic temperature reading, determining a difference between the second temperature result and a previously stored temperature result, and filtering the second temperature result based on the difference to obtain a new stored temperature result.
    Type: Application
    Filed: November 29, 2021
    Publication date: December 22, 2022
    Inventors: Agostino Macerola, Michele Piccardi, Umberto Siciliani, Tommaso Vali, Enrico Favaro
  • Publication number: 20220392498
    Abstract: A system includes a charge pump to charge wordlines of a memory array, a pump regulator coupled including a level detector, and dynamic clock logic coupled between the level detector and an oscillator. The logic provides clock signals to the charge pump and is to perform operations including causing the oscillator to output, to the charge pump during a first time period of a recovery period of the charge pump, a first clock signal having a lower frequency than output during a time period preceding the recovery period. The operations further include causing the oscillator to output, to the charge pump during a second time period of the recovery period that follows the first time period, a second clock signal having a higher frequency than output during the time period preceding the recovery period.
    Type: Application
    Filed: August 17, 2022
    Publication date: December 8, 2022
    Inventors: Vivek Venkata Kalluru, Michele Piccardi
  • Publication number: 20220367000
    Abstract: A memory device comprises a memory array; a word line driver circuit including a charge pump circuit configured to generate a program voltage target to be applied to a word line to program a memory cell of the memory array, and a control loop to activate the charge pump circuit using a control signal according to a comparison of a pump circuit output voltage to a specified duty cycle after the charge pump circuit output reaches the program voltage target, and provides an indication of current generated by the charge pump circuit according to the duty cycle; and logic circuitry that generates a fault indication when the current generated by the charge pump circuit is greater than a specified threshold current.
    Type: Application
    Filed: July 27, 2022
    Publication date: November 17, 2022
    Inventors: Xiaojiang Guo, Jung Sheng Hoei, Michele Piccardi, Manan Tripathi
  • Patent number: 11495306
    Abstract: An electronic device comprises a multi-chip package including multiple memory dice that include a memory array, charging circuitry, polling circuitry and a control unit. The charging circuitry is configured to perform one or more memory events in a high current mode using a high current level or in a low current mode using a lower current level. The polling circuitry is configured to poll a power status node common to the multiple memory dice to determine availability of the high current mode. The control unit is configured to operate the charging circuitry in the high current mode to perform the one or more memory events when the polling circuitry indicates that the high current mode is available, and operate the charging circuitry in the low current mode to perform the one or more memory events when the polling circuitry indicates that the high current mode is unavailable.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: November 8, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Michele Piccardi, Xiaojiang Guo, Kalyan Chakravarthy C. Kavalipurapu
  • Publication number: 20220301638
    Abstract: A circuit includes a linear regulator coupled with a memory array and a pump regulator coupled with a charge pump, the charge pump to provide a supply voltage to the linear regulator. A digital-to-analog converter (DAC) has an output coupled with the pump regulator. Control logic is coupled with the DAC and is to perform operations including causing a digital input value to be provided to the DAC to selectively adjust the supply voltage based on a programmable offset value.
    Type: Application
    Filed: June 8, 2022
    Publication date: September 22, 2022
    Inventor: Michele Piccardi
  • Patent number: 11443816
    Abstract: A first digitally-controlled pump voltage level is established for a charge pump coupled to a wordline of a memory device of a memory sub-system. A determination is made whether a measured digitally-controlled voltage level of the wordline and the first digitally-controlled pump voltage level satisfy a condition. In response to determining that the condition is satisfied, the first digitally-controlled pump voltage level applied to the charge pump is caused to change to a second digitally-controlled pump voltage level.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: September 13, 2022
    Assignee: Micron Technology, Inc.
    Inventor: Michele Piccardi
  • Patent number: 11443778
    Abstract: A system includes a charge pump to charge wordlines of a memory array, a pump regulator coupled including a level detector, and dynamic clock logic coupled between the level detector and an oscillator. The logic provides clock signals to the charge pump and is to perform operations including: detecting that the charge pump has entered a recovery period; causing the oscillator to output, to the charge pump during a first time period of the recovery period, a first clock signal comprising a lower frequency than output during a time period preceding the recovery period; detecting that a voltage level from the level detector satisfies a trip point criterion; and causing the oscillator to output, to the charge pump during a second time period of the recovery period and responsive to the detecting, a second clock signal comprising a higher frequency than output during the time period preceding the recovery period.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: September 13, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Vivek Venkata Kalluru, Michele Piccardi
  • Patent number: 11437117
    Abstract: A memory device comprises a memory array; a word line driver circuit including a charge pump circuit configured to generate a program voltage target to be applied to a word line to program a memory cell of the memory array, and a control loop to activate the charge pump circuit using a control signal according to a comparison of a pump circuit output voltage to the program voltage target; a sensor circuit that compares a duty cycle of the control signal to a specified duty cycle after the charge pump circuit output reaches the program voltage target, and provides an indication of current generated by the charge pump circuit according to the duty cycle; and logic circuitry that generates a fault indication when the current generated by the charge pump circuit is greater than a specified threshold current.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: September 6, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Xiaojiang Guo, Jung Sheng Hoei, Michele Piccardi, Manan Tripathi
  • Publication number: 20220254418
    Abstract: Methods, systems, and devices for power architecture for non-volatile memory are described. A memory device may be configured to operate in a first mode and a second mode (e.g., a low power mode). When operating in the first mode, a voltage may be supplied from a power source (e.g., a power management integrated circuit) to a memory array and one or more associated components via a regulator. When the memory device transitions to operate in the second mode, some of the components supplied from the power source may be powered by a charge pump. Control information associated with the memory array may be stored to the one or more components (e.g., to a cache) that are powered by a charge pump.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 11, 2022
    Inventors: Qisong Lin, Shuai Xu, Jonathan S. Parry, Jeremy Binfet, Michele Piccardi, Qing Liang
  • Patent number: 11410726
    Abstract: Integrated circuit devices might include a controller configured to cause the integrated circuit device to apply a first voltage level to a first conductor while applying a second voltage level to a second conductor, apply a third voltage level to the first conductor while applying a fourth voltage level to the second conductor, and apply a fifth voltage level to the first conductor while applying the second voltage level to the second conductor. The second voltage level might correspond to a target voltage level for the second conductor. A difference between the third voltage level and the first voltage level might have a polarity opposite the polarity of a difference between the fourth voltage level and the second voltage level, and the same polarity of a difference between the fifth voltage level and the first voltage level. The fifth voltage level might correspond to a target voltage level for the first conductor.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: August 9, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Michele Piccardi, Xiaojiang Guo
  • Publication number: 20220247308
    Abstract: Apparatus, systems, and methods are disclosed, including a high-voltage charge pump including multiple pump stages connected in series to provide a high-voltage output, a common discharge circuit, and multiple high-voltage devices coupled between the outputs of each of the multiple pump stages and the common discharge circuit. Each of the multiple pump stages include a low-voltage switching device. The common discharge circuit is coupled to each of the multiple pump stages and is configured to discharge the multiple pump stages when the multiple pump stages are disabled. The multiple high-voltage devices include a respective high-voltage device coupled between an output of each of the multiple pump stages and the common discharge circuit.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 4, 2022
    Inventors: Michele Piccardi, Xiaojiang Guo
  • Patent number: 11404129
    Abstract: Methods, systems, and devices for power architecture for non-volatile memory are described. A memory device may be configured to operate in a first mode and a second mode (e.g., a low power mode). When operating in the first mode, a voltage may be supplied from a power source (e.g., a power management integrated circuit) to a memory array and one or more associated components via a regulator. When the memory device transitions to operate in the second mode, some of the components supplied from the power source may be powered by a charge pump. Control information associated with the memory array may be stored to the one or more components (e.g., to a cache) that are powered by a charge pump.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: August 2, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Qisong Lin, Shuai Xu, Jonathan S. Parry, Jeremy Binfet, Michele Piccardi, Qing Liang
  • Publication number: 20220223215
    Abstract: A memory device includes a memory array comprising a plurality of wordlines and a regulator circuit selectively coupled to the plurality of wordlines, wherein the regulator circuit is configured to perform a detection routine to sample a load current from a selected wordline of the plurality of wordlines and generate a measured output voltage, wherein the measured output voltage modulates with respect to the load current. The memory device further includes a comparator circuit coupled to the regulator circuit, wherein the comparator circuit is configured to generate a comparison result based on a difference between the measured output voltage and a reference voltage and a local media controller coupled to the comparator circuit, wherein the local media controller is configured to identify a presence of a defect on the selected wordline in response to the comparison result satisfying a threshold condition.
    Type: Application
    Filed: March 29, 2022
    Publication date: July 14, 2022
    Inventors: Pinchou Chiang, Arvind Muralidharan, James I. Esteves, Michele Piccardi, Theodore T. Pekny
  • Patent number: 11380408
    Abstract: A circuit includes a linear regulator operatively coupled with a memory array, the linear regulator including a primary switch to generate a regulated voltage usable to program memory cells of the memory array. A first digital-to-analog converter (DAC) includes an output coupled with the linear regulator. A pump regulator is operatively coupled with a charge pump, where the charge pump is to provide a supply voltage to the linear regulator. A second DAC includes an output coupled with the pump regulator. Control logic, operatively coupled with the first DAC and the second DAC, is to perform operations including: causing a first digital input value to be provided to the first DAC to selectively smooth noise on the supply voltage; and causing a second digital input value to be provided the second DAC to selectively adjust the supply voltage based on a programmable offset value.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: July 5, 2022
    Assignee: Micron Technology, Inc.
    Inventor: Michele Piccardi
  • Publication number: 20220197323
    Abstract: Apparatus and methods are disclosed for providing a bias, comprising a bias generator circuit including a high voltage (HV) circuit configured to generate a regulated high voltage (HV) from an HV line and provide the regulated HV at an HV regulated line and a low voltage (LV) circuit configured to generate a low voltage (LV) differential from the HV line and to provide the LV differential at an LV line.
    Type: Application
    Filed: December 24, 2021
    Publication date: June 23, 2022
    Inventors: Michele Piccardi, Xiaojiang Guo
  • Publication number: 20220172788
    Abstract: A first digitally-controlled pump voltage level is established for a charge pump coupled to a wordline of a memory device of a memory sub-system. A determination is made whether a measured digitally-controlled voltage level of the wordline and the first digitally-controlled pump voltage level satisfy a condition. In response to determining that the condition is satisfied, the first digitally-controlled pump voltage level applied to the charge pump is caused to change to a second digitally-controlled pump voltage level.
    Type: Application
    Filed: December 1, 2020
    Publication date: June 2, 2022
    Inventor: Michele Piccardi
  • Publication number: 20220172789
    Abstract: A circuit includes a linear regulator operatively coupled with a memory array, the linear regulator including a primary switch to generate a regulated voltage usable to program memory cells of the memory array. A first digital-to-analog converter (DAC) includes an output coupled with the linear regulator. A pump regulator is operatively coupled with a charge pump, where the charge pump is to provide a supply voltage to the linear regulator. A second DAC includes an output coupled with the pump regulator. Control logic, operatively coupled with the first DAC and the second DAC, is to perform operations including: causing a first digital input value to be provided to the first DAC to selectively smooth noise on the supply voltage; and causing a second digital input value to be provided the second DAC to selectively adjust the supply voltage based on a programmable offset value.
    Type: Application
    Filed: November 30, 2020
    Publication date: June 2, 2022
    Inventor: Michele Piccardi
  • Patent number: 11335415
    Abstract: Memories having an array of memory cells might include a plurality of voltage generation systems each having a respective output selectively connected to a respective access line, and a voltage regulator having an input connected to the output of each of the voltage generation systems, and having an output selectively connected to the respective access line for each of the voltage generation systems.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: May 17, 2022
    Assignee: Micron Technology, Inc.
    Inventor: Michele Piccardi