Patents by Inventor Lava Kumar PULLURU

Lava Kumar PULLURU 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: 12293806
    Abstract: Various example embodiments of the inventive concepts include a SRAM apparatus including a left memory array and right memory array, each of the left memory array and the right memory array including a left memory array and a right memory array, each comprising a plurality of columns, the plurality of columns in each of the left memory array and the right memory array divided into a plurality of segments, and each of the segments comprising a plurality of memory bit cells, and central driver circuitry comprising a plurality of driver devices, each of the plurality of driver devices communicatively connected to a corresponding segment of the plurality of segments through a corresponding metal control line of a plurality of metal control lines, the central driver circuitry configured to route at least one array signal to at least one segment of the plurality of segments.
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: May 6, 2025
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lava Kumar Pulluru, Gopi Sunanth Kumar Gogineni, Manish Chandra Joshi, Pushp Khatter
  • Patent number: 12205636
    Abstract: A write assist circuit includes a first power control circuit and second power control circuit, each comprising a first switch and second switch. The first switch of first power control circuit has first drive strength and is configured to be controlled by a column select line, a power control line, a first bit line, and a power supply. The first switch of the second power control circuit has the first drive strength and is configured to be controlled by the column select line, the power control line, a second bit line, and the power supply. The second switch has a second drive strength and is configured to be controlled by the power control line. The first switches are configured to be controlled using input data on first- and second-bit line, respectively, for altering power supply to first inverter and second inverter of SRAM bitcell.
    Type: Grant
    Filed: February 2, 2023
    Date of Patent: January 21, 2025
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Poornima Venkatasubramanian, Pushp Khatter, Lava Kumar Pulluru, Manish Chandra Joshi, Ved Prakash, Anurag Kumar, Surendra Deshmukh
  • Publication number: 20240347104
    Abstract: A memory device and its operation reduce the impact of a parasitic wire Resistance and Capacitance (RC) in the memory device. At least one of a rise transition and a fall transition of a signal transmitted by a long metal line is sensed by a sense circuit of a signal boosting circuit. At least one of a Pull Up (PU) circuit and a Pull Down (PD) circuit of the signal boosting circuit is enabled to speed-up one or both of the rise transition and the fall transition of the signal transmitted by the long metal line. The duration of an operation of one of the PU circuit and the PD circuit may be controlled using a control signal.
    Type: Application
    Filed: October 10, 2023
    Publication date: October 17, 2024
    Inventors: Lava Kumar Pulluru, Manish Chandra Joshi, Parvinder Kumar Rana, Poornima Venkatasubramanian, Ved Prakash, Chaitanya Vavilla
  • Publication number: 20240321324
    Abstract: A memory device, includes a voltage and temperature sensing circuit configured to generate a Pull Down (PD) signal that varies based on upon at least one of a voltage and temperature at the memory device; and primary pull down paths provided with secondary pull down paths, wherein the primary pull down paths are provided separately at a Dummy Read Bit line (DRBL) and a Dummy Global Read Bit line (DGRBL), wherein the secondary pull down paths are provided separately for the DRBL and the DGRBL parallel to the respective primary pull down paths. The voltage and temperature sensing circuit is configured to perform at least one of: controlling at least one of the secondary pull down paths based on a voltage of the PD signal; varying a discharge time of at least one of the dummy bit-lines based on the voltage of the PD signal; and generating an early reset signal at one of a high temperature condition and a high voltage condition based on the voltage of the PD signal.
    Type: Application
    Filed: October 2, 2023
    Publication date: September 26, 2024
    Inventors: Poornima Venkatasubramanian, Gopi Sunanth Kumar Gogineni, Puneet Suri, Lava Kumar Pulluru, Karthikeyan Somashekara, Manish Chandra Joshi
  • Patent number: 12087387
    Abstract: A memory device includes at least one bitcell; read circuitry coupled to the at least one bitcell; and screening circuitry coupled to the read circuitry, wherein the screening circuitry includes a master slave flip-flop configured to store an output of the at least one bitcell during a read operation of the memory device, wherein the master slave flip-flop includes a master latch and a slave latch; and a DOUT window controller coupled to the master slave flip-flop and configured to generate and control a master clock signal for the master latch to determine if the at least one bitcell is a weak bitcell; and generate and control a slave clock signal for the slave latch to enable toggling of the output of the at least one bitcell during a transparent window between the master clock signal and the slave clock signal.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: September 10, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lava Kumar Pulluru, Poornima Venkatasubramanian, Manish Chandra Joshi, Ved Prakash, Pushp Khatter
  • Publication number: 20240161821
    Abstract: A write assist circuit includes a first power control circuit and second power control circuit, each comprising a first switch and second switch. The first switch of first power control circuit has first drive strength and is configured to be controlled by a column select line, a power control line, a first bit line, and a power supply. The first switch of the second power control circuit has the first drive strength and is configured to be controlled by the column select line, the power control line, a second bit line, and the power supply. The second switch has a second drive strength and is configured to be controlled by the power control line. The first switches are configured to be controlled using input data on first- and second-bit line, respectively, for altering power supply to first inverter and second inverter of SRAM bitcell.
    Type: Application
    Filed: February 2, 2023
    Publication date: May 16, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Poornima VENKATASUBRAMANIAN, Pushp KHATTER, Lava Kumar PULLURU, Manish Chandra JOSHI, Ved PRAKASH, Anurag KUMAR, Surendra DESHMUKH
  • Publication number: 20240071438
    Abstract: Various example embodiments of the inventive concepts include a SRAM apparatus including a left memory array and right memory array, each of the left memory array and the right memory array including a left memory array and a right memory array, each comprising a plurality of columns, the plurality of columns in each of the left memory array and the right memory array divided into a plurality of segments, and each of the segments comprising a plurality of memory bit cells, and central driver circuitry comprising a plurality of driver devices, each of the plurality of driver devices communicatively connected to a corresponding segment of the plurality of segments through a corresponding metal control line of a plurality of metal control lines, the central driver circuitry configured to route at least one array signal to at least one segment of the plurality of segments.
    Type: Application
    Filed: October 31, 2022
    Publication date: February 29, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Lava Kumar PULLURU, Gopi Sunanth Kumar Gogineni, Manish Chandra Joshi, Pushp Khatter
  • Patent number: 11776623
    Abstract: A bitline precharge system is provided for a semiconductor memory device. The bitline precharge system comprises a voltage comparator circuit to output a reference voltage signal based on an input wordline voltage supply level (VDDWL), and a periphery power supply voltage (VDDP) level. A voltage control circuit is electrically coupled to a periphery power supply and the voltage comparator circuit to output a precharge voltage (VDDM) level based on the reference voltage signal and the periphery power supply voltage (VDDP) level. A bitline precharge circuit is electrically coupled to the voltage control circuit and a plurality of bitlines of the memory device to precharge the plurality of bitlines based on the precharge voltage (VDDM) level in response to a precharge enable signal during one of a read operation to read data from the memory device and a write operation to write data from the memory device.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: October 3, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Lava Kumar Pulluru, Ankur Gupta, Parvinder Kumar Rana
  • Publication number: 20230282251
    Abstract: A memory device includes at least one bitcell; read circuitry coupled to the at least one bitcell; and screening circuitry coupled to the read circuitry, wherein the screening circuitry includes a master slave flip-flop configured to store an output of the at least one bitcell during a read operation of the memory device, wherein the master slave flip-flop includes a master latch and a slave latch; and a DOUT window controller coupled to the master slave flip-flop and configured to generate and control a master clock signal for the master latch to determine if the at least one bitcell is a weak bitcell; and generate and control a slave clock signal for the slave latch to enable toggling of the output of the at least one bitcell during a transparent window between the master clock signal and the slave clock signal.
    Type: Application
    Filed: May 23, 2022
    Publication date: September 7, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Lava Kumar PULLURU, Poornima VENKATASUBRAMANIAN, Manish Chandra JOSHI, Ved PRAKASH, Pushp KHATTER
  • Publication number: 20220366970
    Abstract: A bitline precharge system is provided for a semiconductor memory device. The bitline precharge system comprises a voltage comparator circuit to output a reference voltage signal based on an input wordline voltage supply level (VDDWL), and a periphery power supply voltage (VDDP) level. A voltage control circuit is electrically coupled to a periphery power supply and the voltage comparator circuit to output a precharge voltage (VDDM) level based on the reference voltage signal and the periphery power supply voltage (VDDP) level. A bitline precharge circuit is electrically coupled to the voltage control circuit and a plurality of bitlines of the memory device to precharge the plurality of bitlines based on the precharge voltage (VDDM) level in response to a precharge enable signal during one of a read operation to read data from the memory device and a write operation to write data from the memory device.
    Type: Application
    Filed: July 26, 2022
    Publication date: November 17, 2022
    Inventors: Lava Kumar Pulluru, Ankur Gupta, Parvinder Kumar Rana
  • Patent number: 11410720
    Abstract: A bitline precharge system is provided for a semiconductor memory device. The bitline precharge system comprises a voltage comparator circuit to output a reference voltage signal based on an input wordline voltage supply level (VDDWL), and a periphery power supply voltage (VDDP) level. A voltage control circuit is electrically coupled to a periphery power supply and the voltage comparator circuit to output a precharge voltage (VDDM) level based on the reference voltage signal and the periphery power supply voltage (VDDP) level. A bitline precharge circuit is electrically coupled to the voltage control circuit and a plurality of bitlines of the memory device to precharge the plurality of bitlines based on the precharge voltage (VDDM) level in response to a precharge enable signal during one of a read operation to read data from the memory device and a write operation to write data from the memory device.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: August 9, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Lava Kumar Pulluru, Ankur Gupta, Parvinder Kumar Rana
  • Publication number: 20220108744
    Abstract: A bitline precharge system is provided for a semiconductor memory device. The bitline precharge system comprises a voltage comparator circuit to output a reference voltage signal based on an input wordline voltage supply level (VDDWL), and a periphery power supply voltage (VDDP) level. A voltage control circuit is electrically coupled to a periphery power supply and the voltage comparator circuit to output a precharge voltage (VDDM) level based on the reference voltage signal and the periphery power supply voltage (VDDP) level. A bitline precharge circuit is electrically coupled to the voltage control circuit and a plurality of bitlines of the memory device to precharge the plurality of bitlines based on the precharge voltage (VDDM) level in response to a precharge enable signal during one of a read operation to read data from the memory device and a write operation to write data from the memory device.
    Type: Application
    Filed: November 19, 2020
    Publication date: April 7, 2022
    Inventors: Lava Kumar Pulluru, Ankur Gupta, Parvinder Kumar Rana
  • Publication number: 20220103163
    Abstract: An apparatus includes a NMOS transistor having a drain, a first PMOS transistor having a drain connected to the drain of the NMOS transistor, a level shifter having an input and an output, the input of the level shifter being connected to the drain of the NMOS transistor and the drain of the first PMOS transistor, a first digital logic circuit having a drain and a gate, a first inverter having an input connected to the A output of the level shifter and the drain of the first digital logic circuit, and a second digital logic circuit having an output connected to the gate of the first digital logic circuit, at least one condition being set in the apparatus during a read operation.
    Type: Application
    Filed: February 15, 2021
    Publication date: March 31, 2022
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ankur GUPTA, Lava Kumar PULLURU, Parvinder Kumar RANA
  • Patent number: 11290092
    Abstract: An apparatus includes a NMOS transistor having a drain, a first PMOS transistor having a drain connected to the drain of the NMOS transistor, a level shifter having an input and an output, the input of the level shifter being connected to the drain of the NMOS transistor and the drain of the first PMOS transistor, a first digital logic circuit having a drain and a gate, a first inverter having an input connected to the Aoutput of the level shifter and the drain of the first digital logic circuit, and a second digital logic circuit having an output connected to the gate of the first digital logic circuit, at least one condition being set in the apparatus during a read operation.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: March 29, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ankur Gupta, Lava Kumar Pulluru, Parvinder Kumar Rana
  • Patent number: 10803929
    Abstract: A static random-access memory (SRAM) system using a virtual banking architecture includes a processor communicatively coupled to an SRAM, and a plurality of circuits disposed in the SRAM and operated under control of the processor. The circuits include a divide circuit, a select circuit disposed in the divide circuit, and a local input/output circuit. The divide circuit divides a bank into first and second bit cell arrays, in which the first bit cell array and/or the second bit cell array includes at least one bit line. The select circuit is connected between the first and second bit cell arrays, and the select circuit selects one of the first and second bit cell arrays according to a predefined select logic. The local input/output circuit is connected to the select circuit and generates an output according to one or more predefined operations of the local input/output circuit.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: October 13, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Lava Kumar Pulluru, Parvinder Kumar Rana, Akash Kumar Gupta, Gayatri Nair
  • Publication number: 20200251164
    Abstract: A static random-access memory (SRAM) system using a virtual banking architecture includes a processor communicatively coupled to an SRAM, and a plurality of circuits disposed in the SRAM and operated under control of the processor. The circuits include a divide circuit, a select circuit disposed in the divide circuit, and a local input/output circuit. The divide circuit divides a bank into first and second bit cell arrays, in which the first bit cell array and/or the second bit cell array includes at least one bit line. The select circuit is connected between the first and second bit cell arrays, and the select circuit selects one of the first and second bit cell arrays according to a predefined select logic. The local input/output circuit is connected to the select circuit and generates an output according to one or more predefined operations of the local input/output circuit.
    Type: Application
    Filed: April 24, 2020
    Publication date: August 6, 2020
    Inventors: LAVA KUMAR PULLURU, PARVINDER KUMAR RANA, AKASH KUMAR GUPTA, GAYATRI NAIR
  • Patent number: 10672443
    Abstract: A fin-Field Effect Transistor based system on chip (SoC) memory is provided and includes a control block, first logic gates, and row decoder blocks. The control block includes a clock generator circuit that generates an internal clock signal, and a global driver circuit coupled to the clock generator circuit that drives a global clock signal. Each row decoder block includes a second logic gate that receives higher order non-clocked address signals via input terminals, a transmission gate that combines the global clock signal and the higher order non-clocked address signals, third logic gates that receive lower order non-clocked address signals and higher order clocked address signals, and output a combined lower order address and higher order address along with the global clock signal, level shifter circuits that receive the outputs, and word-line driver circuits that generate word-lines based on the output of the level shifter circuits.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: June 2, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ankur Gupta, Abhishek Kesarwani, Parvinder Kumar Rana, Manish Chandra Joshi, Lava Kumar Pulluru
  • Patent number: 10665295
    Abstract: A static random-access memory (SRAM) system using a virtual banking architecture includes a processor communicatively coupled to an SRAM, and a plurality of circuits disposed in the SRAM and operated under control of the processor. The circuits include a divide circuit, a select circuit disposed in the divide circuit, and a local input/output circuit. The divide circuit divides a bank into first and second bit cell arrays, in which the first bit cell array and/or the second bit cell array includes at least one bit line. The select circuit is connected between the first and second bit cell arrays, and the select circuit selects one of the first and second bit cell arrays according to a predefined select logic. The local input/output circuit is connected to the select circuit and generates an output according to one or more predefined operations of the local input/output circuit.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: May 26, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Lava Kumar Pulluru, Parvinder Kumar Rana, Akash Kumar Gupta, Gayatri Nair
  • Publication number: 20200075070
    Abstract: A fin-Field Effect Transistor based system on chip (SoC) memory is provided and includes a control block, first logic gates, and row decoder blocks. The control block includes a clock generator circuit that generates an internal clock signal, and a global driver circuit coupled to the clock generator circuit that drives a global clock signal. Each row decoder block includes a second logic gate that receives higher order non-clocked address signals via input terminals, a transmission gate that combines the global clock signal and the higher order non-clocked address signals, third logic gates that receive lower order non-clocked address signals and higher order clocked address signals, and output a combined lower order address and higher order address along with the global clock signal, level shifter circuits that receive the outputs, and word-line driver circuits that generate word-lines based on the output of the level shifter circuits.
    Type: Application
    Filed: October 22, 2018
    Publication date: March 5, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ankur GUPTA, Abhishek KESARWANI, Parvinder Kumar RANA, Manish Chandra JOSHI, Lava Kumar PULLURU
  • Patent number: 10522218
    Abstract: Embodiments herein provide a method for reducing power dissipation in a Static Random Access Memory (SRAM) device. The method includes determining, by the tracking circuit, whether at least one SRAM Bit-Cell discharges power from at least one BL exceeding a pre-defined voltage level required for a sense amplifier to perform a read operation. Furthermore, the method includes reducing, by the WL driver, the power discharged from the at least one BL by controlling a WL voltage power supply switch of the WL driver using a SAE signal and adjusting a pulse width of the at least one WL to pull down the at least one WL using a NMOS circuit when the at least one SRAM Bit-Cell discharges the power from the at least one BL exceeding the pre-defined voltage level.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: December 31, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Parvinder Kumar Rana, Lava Kumar Pulluru, Shuvadeep Kumar, Ankur Gupta