Patents by Inventor Arjun Sankar

Arjun Sankar 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: 11545198
    Abstract: A memory device includes a memory array of memory cells, wordlines and bitlines connected to the memory cells, a first read multiplexor and a second read multiplexor connected to the bitlines, a first sense amplifier connected to the first read multiplexor, a second sense amplifier connected to the second read multiplexor, a first data path connected to the first sense amplifier, and a second data path connected to the second sense amplifier. Each of the memory cells is connected to only one pair of the bitlines and only one of the wordlines. The first read multiplexor is adapted to connect the first sense amplifier to the bitlines during a first portion of a clock cycle and the second read multiplexor is adapted to connect the second sense amplifier to the bitlines during a second portion of a clock cycle that is different from the first portion of the clock cycle.
    Type: Grant
    Filed: May 30, 2021
    Date of Patent: January 3, 2023
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Venkatraghavan Bringivijayaraghavan, Arjun Sankar, Sreejith Chidambaran, Igor Arsovski
  • Publication number: 20210287725
    Abstract: A memory device includes a memory array of memory cells, wordlines and bitlines connected to the memory cells, a first read multiplexor and a second read multiplexor connected to the bitlines, a first sense amplifier connected to the first read multiplexor, a second sense amplifier connected to the second read multiplexor, a first data path connected to the first sense amplifier, and a second data path connected to the second sense amplifier. Each of the memory cells is connected to only one pair of the bitlines and only one of the wordlines. The first read multiplexor is adapted to connect the first sense amplifier to the bitlines during a first portion of a clock cycle and the second read multiplexor is adapted to connect the second sense amplifier to the bitlines during a second portion of a clock cycle that is different from the first portion of the clock cycle.
    Type: Application
    Filed: May 30, 2021
    Publication date: September 16, 2021
    Inventors: Venkatraghavan BRINGIVIJAYARAGHAVAN, Arjun Sankar, Sreejith Chidambaran, Igor Arsovski
  • Patent number: 11024347
    Abstract: A memory device includes a memory array of memory cells, wordlines and bitlines connected to the memory cells, a first read multiplexor and a second read multiplexor connected to the bitlines, a first sense amplifier connected to the first read multiplexor, a second sense amplifier connected to the second read multiplexor, a first data path connected to the first sense amplifier, and a second data path connected to the second sense amplifier. Each of the memory cells is connected to only one pair of the bitlines and only one of the wordlines. The first read multiplexor is adapted to connect the first sense amplifier to the bitlines during a first portion of a clock cycle and the second read multiplexor is adapted to connect the second sense amplifier to the bitlines during a second portion of a clock cycle that is different from the first portion of the clock cycle.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: June 1, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Venkatraghavan Bringivijayaraghavan, Arjun Sankar, Sreejith Chidambaran, Igor Arsovski
  • Publication number: 20210118477
    Abstract: A memory device includes a memory array of memory cells, wordlines and bitlines connected to the memory cells, a first read multiplexor and a second read multiplexor connected to the bitlines, a first sense amplifier connected to the first read multiplexor, a second sense amplifier connected to the second read multiplexor, a first data path connected to the first sense amplifier, and a second data path connected to the second sense amplifier. Each of the memory cells is connected to only one pair of the bitlines and only one of the wordlines. The first read multiplexor is adapted to connect the first sense amplifier to the bitlines during a first portion of a clock cycle and the second read multiplexor is adapted to connect the second sense amplifier to the bitlines during a second portion of a clock cycle that is different from the first portion of the clock cycle.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 22, 2021
    Inventors: Venkatraghavan Bringivijayaraghavan, Arjun Sankar, Sreejith Chidambaran, Igor Arsovski
  • Patent number: 10186312
    Abstract: A circuit includes a memory array having memory cells and bitlines. A write driver is connected to the bitlines through column select transistors. A write assist circuit is connected to the write driver. The write assist circuit includes a common boost node, negative boost transistors, and a keeper transistor. The negative boost transistors are connected from the digit lines to the common boost node. The negative boost transistors selectively pull the bitlines of a selected cell of the memory array to ground during a write operation to the selected cell of the memory array. The write assist circuit may include a first negative boost transistor connected from a first digit line to the common boost node, a second negative boost transistor connected from a second digit line to the common boost node, and a keeper transistor connected from the common boost node to ground.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: January 22, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Arjun Sankar, Venkatraghavan Bringivijayaraghavan
  • Patent number: 9911474
    Abstract: Devices include an array of memory cells arranged in rows and columns. Wordlines are connected to the memory cells, and each of the wordlines is connected to a distinct row of the array of the memory cells. A wordline driver circuit is connected to a near end of the wordlines. The wordline driver circuit outputs a wordline select signal. Also, a feedback circuit is connected to a far end of each of the wordlines, opposite the near end of the wordlines. The feedback circuit includes first transistors (gated by the internal clock signal and the wordline select signal) electrically connecting a relatively lower voltage source to the far end of the wordlines; and second transistors (also gated by the internal clock signal and the wordline select signal) electrically connecting a relatively higher voltage source to the far end of the wordlines.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: March 6, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Sreenivasula Reddy Dhani Reddy, Arjun Sankar, Sushma Nirmala Sambatur
  • Patent number: 9570155
    Abstract: Approaches for stability of cells in a Static Random Access Memory (SRAM) array are provided. A circuit includes a precharging circuit configured to precharge bitlines of a Static Random Access Memory (SRAM) array to a first voltage potential for a non-read operation and to a second voltage potential for a read operation. The first voltage potential is different than the second voltage potential.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: February 14, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: George M. Braceras, Venkatraghavan Bringivijayaraghavan, Krishnan S. Rengarajan, Arjun Sankar, Sreenivasula R. Dhani Reddy
  • Publication number: 20160365139
    Abstract: Approaches for stability of cells in a Static Random Access Memory (SRAM) array are provided. A circuit includes a precharging circuit configured to precharge bitlines of a Static Random Access Memory (SRAM) array to a first voltage potential for a non-read operation and to a second voltage potential for a read operation. The first voltage potential is different than the second voltage potential.
    Type: Application
    Filed: June 9, 2015
    Publication date: December 15, 2016
    Inventors: George M. Braceras, Venkatraghavan Bringivijayaraghavan, Krishnan S. Rengarajan, Arjun Sankar, Sreenivasula R. Dhani Reddy