Patents by Inventor Shantanu Rajwade

Shantanu Rajwade 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).

  • Publication number: 20240013840
    Abstract: Memories having a controller configured to perform methods during programming operations including apply a first voltage level to a data line selectively connected to a selected memory cell selected, apply a lower second voltage level to a select gate connected between the data line and the memory cell, decrease the voltage level applied to the data line from the first voltage level to a third voltage level while continuing to apply the second voltage level to the select gate, increase the voltage level applied to the select gate from the second voltage level to a fourth voltage level after the voltage level of the data line settles to the third voltage level, and apply a programming voltage to the memory cell after increasing the voltage level applied to the select gate to the fourth voltage level.
    Type: Application
    Filed: July 21, 2023
    Publication date: January 11, 2024
    Inventors: Violante Moschiano, Purval S. Sule, Han Liu, Andrea D'alessandro, Pranav Kalavade, Han Zhao, Shantanu Rajwade
  • Publication number: 20230352092
    Abstract: Systems, apparatuses and methods may provide for technology that issues a program pulse to a selected subblock of a NAND memory array, conducts a pulse recovery phase after the program pulse, and shuts down unselected subblocks in the NAND memory array during the pulse recovery phase.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 2, 2023
    Inventors: Tarek Ameen, Shantanu Rajwade, Hsiao Yu Chang, Rohit Shenoy, Pranav Chava, Xin Sun, Pratyush Chandrapati
  • Publication number: 20230317144
    Abstract: An embodiment of an apparatus may include NAND memory organized as two or more memory planes and a controller communicatively coupled to the NAND memory, the controller including circuitry to provide synchronous independent plane read operations for the two or more memory planes of the NAND memory. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 5, 2023
    Applicant: Intel NDTM US LLC
    Inventors: Chang Wan Ha, Binh Ngo, Ali Khakifirooz, Aliasgar S. Madraswala, Bharat Pathak, Pranav Kalavade, Shantanu Rajwade
  • Patent number: 11721396
    Abstract: Memories having a controller configured to perform methods during programming operations including apply a first voltage level to a data line selectively connected to a selected memory cell selected, apply a lower second voltage level to a select gate connected between the data line and the memory cell, decrease the voltage level applied to the data line from the first voltage level to a third voltage level while continuing to apply the second voltage level to the select gate, increase the voltage level applied to the select gate from the second voltage level to a fourth voltage level after the voltage level of the data line settles to the third voltage level, and apply a programming voltage to the memory cell after increasing the voltage level applied to the select gate to the fourth voltage level.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: August 8, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Violante Moschiano, Purval S. Sule, Han Liu, Andrea D'Alessandro, Pranav Kalavade, Han Zhao, Shantanu Rajwade
  • Publication number: 20230061293
    Abstract: Systems, apparatuses and methods may provide for technology that conducts a pulse-verify loop sequence from a first program level in targeted NAND memory cells to a next-to-last program level in the memory cells, wherein the pulse-verify loop sequence includes an issuance of a program pulse and one or more verify pulses to the memory cells on a per program level basis, and wherein successive program pulses differ from one another by a gate step voltage amount. The technology may also issue a last level program pulse to the memory cells at a last program level, issue a single verify pulse to the memory cells after the last level program pulse, and issue a gate step pulse to the memory cells at a variable program level, wherein the variable program level differs from the last program level by an amount that is greater than the gate step voltage amount.
    Type: Application
    Filed: August 25, 2021
    Publication date: March 2, 2023
    Inventors: Sagar Upadhyay, Archana Tankasala, Aliasgar S. Madraswala, Shantanu Rajwade
  • Publication number: 20230044991
    Abstract: Systems, apparatuses and methods may provide for technology that detects a request to program a NAND memory containing a plurality of dies and programs the NAND memory on a stripe-by-stripe basis, wherein each stripe spans the plurality of dies and includes multiple types of pages. The multiple types of pages may reduce program time variability across the stripes and reduce the error susceptibility of the NAND memory.
    Type: Application
    Filed: August 4, 2021
    Publication date: February 9, 2023
    Inventors: Shantanu Rajwade, Kartik Ganapathi, Rohit Shenoy, Kristopher Gaewsky, MarkAnthony Golez, Vivek Angoth, Pranav Kalavade, Sarvesh Gangadhar
  • Publication number: 20220310160
    Abstract: Systems, apparatuses and methods may provide for technology that boosts strings of a plurality of NAND sub-blocks to a pass voltage, deboosts a first subset of the boosted strings based on data associated with the plurality of NAND sub-blocks, and simultaneously programs the first subset while a second subset of the boosted strings remain at the pass voltage. In one example, to boost the strings of the NAND sub-blocks, the technology applies the pass voltage to selected and unselected wordlines that are connected to the NAND sub-blocks while selected and unselected strings are disconnected from a bitline that receives the data associated with the NAND sub-blocks.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 29, 2022
    Inventors: Ali Khakifirooz, Pranav Kalavade, Shantanu Rajwade, Tarek Ahmed Ameen Beshari
  • Publication number: 20210257036
    Abstract: Techniques and mechanisms for verifying the programming of a multi-bit cell of a memory array. In an embodiment, program verification is performed based on a signal, other than a word line voltage, which includes an indication of a reference voltage that is to be a basis for evaluating a currently programmed threshold voltage of a memory cell. A determination that the particular indication is to be communicated with the signal is made based on a detected state of the memory device which includes the memory cell. In another embodiment, the detected state includes one of a thermal condition at the memory array, a pressure condition at the memory array, a wear condition of the memory array, or a relative position of the cell with respect to one or more other cells of the memory array.
    Type: Application
    Filed: February 13, 2020
    Publication date: August 19, 2021
    Applicant: Intel Corporation
    Inventors: Xiang Yang, Tarek Ahmed Ameen Beshari, Narayanan Ramanan, Arun Thathachary, Shantanu Rajwade, Matin Amani
  • Patent number: 11094386
    Abstract: Techniques and mechanisms for verifying the programming of a multi-bit cell of a memory array. In an embodiment, program verification is performed based on a signal, other than a word line voltage, which includes an indication of a reference voltage that is to be a basis for evaluating a currently programmed threshold voltage of a memory cell. A determination that the particular indication is to be communicated with the signal is made based on a detected state of the memory device which includes the memory cell. In another embodiment, the detected state includes one of a thermal condition at the memory array, a pressure condition at the memory array, a wear condition of the memory array, or a relative position of the cell with respect to one or more other cells of the memory array.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: August 17, 2021
    Assignee: Intel Corporation
    Inventors: Xiang Yang, Tarek Ahmed Ameen Beshari, Narayanan Ramanan, Arun Thathachary, Shantanu Rajwade, Matin Amani
  • Publication number: 20200402586
    Abstract: Memories having a controller configured to perform methods during programming operations including apply a first voltage level to a data line selectively connected to a selected memory cell selected, apply a lower second voltage level to a select gate connected between the data line and the memory cell, decrease the voltage level applied to the data line from the first voltage level to a third voltage level while continuing to apply the second voltage level to the select gate, increase the voltage level applied to the select gate from the second voltage level to a fourth voltage level after the voltage level of the data line settles to the third voltage level, and apply a programming voltage to the memory cell after increasing the voltage level applied to the select gate to the fourth voltage level.
    Type: Application
    Filed: September 4, 2020
    Publication date: December 24, 2020
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Violante Moschiano, Purval S. Sule, Han Liu, Andrea D'Alessandro, Pranav Kalavade, Han Zhao, Shantanu Rajwade
  • Patent number: 10777277
    Abstract: Memories having a controller configured to perform methods during programming operations including applying a first voltage level to first and second data lines while applying a second, lower, voltage level to first and second select gates connected between the data lines and respective strings of memory cells; decreasing a voltage level of the first data line to a third voltage level; increasing a voltage level of the first select gate to a fourth voltage level; applying a fifth voltage level, higher than the first voltage level, to first and second access lines coupled to memory cells of the strings of memory cells; and increasing a voltage level of the first access line to a sixth voltage level.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: September 15, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Violante Moschiano, Purval S. Sule, Han Liu, Andrea D'Alessandro, Pranav Kalavade, Han Zhao, Shantanu Rajwade
  • Publication number: 20200066350
    Abstract: Memories having a controller configured to perform methods during programming operations including applying a first voltage level to first and second data lines while applying a second, lower, voltage level to first and second select gates connected between the data lines and respective strings of memory cells; decreasing a voltage level of the first data line to a third voltage level; increasing a voltage level of the first select gate to a fourth voltage level; applying a fifth voltage level, higher than the first voltage level, to first and second access lines coupled to memory cells of the strings of memory cells; and increasing a voltage level of the first access line to a sixth voltage level.
    Type: Application
    Filed: October 17, 2019
    Publication date: February 27, 2020
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Violante Moschiano, Purval S. Sule, Han Liu, Andrea D'Alessandro, Pranav Kalavade, Han Zhao, Shantanu Rajwade
  • Patent number: 10482974
    Abstract: Methods include applying a first voltage level to first and second data lines while applying a second, lower, voltage level to first and second select gates connected between the data lines and respective strings of memory cells; decreasing a voltage level of the first data line to a third voltage level; increasing a voltage level of the first select gate to a fourth voltage level; applying a fifth voltage level, higher than the first voltage level, to first and second access lines coupled to memory cells of the strings of memory cells; and increasing a voltage level of the first access line to a sixth voltage level.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: November 19, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Violante Moschiano, Purval S. Sule, Han Liu, Andrea D'Alessandro, Pranav Kalavade, Han Zhao, Shantanu Rajwade
  • Publication number: 20190043567
    Abstract: An apparatus and/or system is described including a memory device or a controller for a memory device to perform an adjustment of a read operation time for data stored in the memory device. In embodiments, the apparatus may receive a request for data stored in the memory device and a read operation time adjustment module operable by the controller may acquire a first operation temperature of the memory device, obtained at a time of programming of the data stored in the memory device. The apparatus may acquire a second operation temperature of the memory device, obtained after the request for the data stored in the memory device is received. Based at least partially on the first operation temperature and the second operation temperature, the apparatus may adjust the read operation time to read the data. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: August 28, 2018
    Publication date: February 7, 2019
    Inventors: Ali Khakifirooz, Shantanu Rajwade, Rohit Shenoy, Aliasgar Madraswala, Pranav Kalavade