Patents by Inventor Sang Thanh Nguyen

Sang Thanh Nguyen 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: 9729155
    Abstract: A method for an FPGA includes coupling a first electrode of a first resistive element to a first input voltage, coupling a second electrode of a second resistive element to a second input voltage, applying a first programming voltage to a shared node of a second electrode of the first resistive element, a first electrode of the second resistive element, and to a gate of a transistor element, and changing a resistance state of the first resistive element to a low resistance state while maintaining a resistance state of the second resistive element, when a voltage difference between the first programming voltage at the second terminal and the first input voltage at the first terminal exceeds a programming voltage associated with the first resistive element.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: August 8, 2017
    Assignee: CROSSBAR, INC.
    Inventors: Hagop Nazarian, Sang Thanh Nguyen, Tanmay Kumar
  • Patent number: 9191000
    Abstract: Providing for a field programmable gate array (FPGA) utilizing resistive random access memory (RRAM) technology is described herein. By way of example, the FPGA can comprise a switching block interconnect having parallel signal input lines crossed by perpendicular signal output lines. RRAM memory cells can be formed at respective intersections of the signal input lines and signal output lines. The RRAM memory cell can include a voltage divider comprising multiple programmable resistive elements arranged electrically in series across a VCC and VSS of the FPGA. A common node of the voltage divider drives a gate of a pass gate transistor configured to activate or deactivate the intersection. The disclosed RRAM memory can provide high transistor density, high logic utilization, fast programming speed, radiation immunity, fast power up and significant benefits for FPGA technology.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: November 17, 2015
    Assignee: Crossbar, Inc.
    Inventors: Hagop Nazarian, Sang Thanh Nguyen, Tanmay Kumar
  • Patent number: 9054702
    Abstract: Providing for a field programmable gate array (FPGA) utilizing resistive random access memory (RRAM) technology is described herein. By way of example, the FPGA can comprise a switching block interconnect having parallel signal input lines crossed by perpendicular signal output lines. RRAM memory cells can be formed at respective intersections of the signal input lines and signal output lines. The RRAM memory cell can include a voltage divider comprising multiple programmable resistive elements arranged electrically in series across a VCC and VSS of the FPGA. A common node of the voltage divider drives a gate of a pass gate transistor configured to activate or deactivate the intersection. The disclosed RRAM memory can provide high transistor density, high logic utilization, fast programming speed, radiation immunity, fast power up and significant benefits for FPGA technology.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: June 9, 2015
    Assignee: CROSSBAR, INC.
    Inventors: Hagop Nazarian, Sang Thanh Nguyen, Tanmay Kumar
  • Patent number: 9001552
    Abstract: A circuit for programming a resistive switching device includes a resistive switching device characterized by a programmable resistance, the resistive switching device comprising a first terminal, a second terminal, and a resistive switching element, a first circuit configured to supply a programming voltage to the resistive switching device and to supply a predetermined current to flow in the resistive switching device, and a second circuit coupled to the first circuit and to the resistive switching device, wherein the second circuit is configured to terminate the supply of the programming voltage to the resistive switching device when the predetermined current flows in the resistive switching device.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: April 7, 2015
    Assignee: Crossbar, Inc.
    Inventors: Sang Thanh Nguyen, Hagop Nazarian, Layne Armijo
  • Publication number: 20140327470
    Abstract: A method for an FPGA includes coupling a first electrode of a first resistive element to a first input voltage, coupling a second electrode of a second resistive element to a second input voltage, applying a first programming voltage to a shared node of a second electrode of the first resistive element, a first electrode of the second resistive element, and to a gate of a transistor element, and changing a resistance state of the first resistive element to a low resistance state while maintaining a resistance state of the second resistive element, when a voltage difference between the first programming voltage at the second terminal and the first input voltage at the first terminal exceeds a programming voltage associated with the first resistive element.
    Type: Application
    Filed: July 18, 2014
    Publication date: November 6, 2014
    Inventors: Hagop NAZARIAN, Sang Thanh NGUYEN, Tanmay KUMAR
  • Publication number: 20140320166
    Abstract: Providing for a field programmable gate array (FPGA) utilizing resistive random access memory (RRAM) technology is described herein. By way of example, the FPGA can comprise a switching block interconnect having parallel signal input lines crossed by perpendicular signal output lines. RRAM memory cells can be formed at respective intersections of the signal input lines and signal output lines. The RRAM memory cell can include a voltage divider comprising multiple programmable resistive elements arranged electrically in series across a VCC and VSS of the FPGA. A common node of the voltage divider drives a gate of a pass gate transistor configured to activate or deactivate the intersection. The disclosed RRAM memory can provide high transistor density, high logic utilization, fast programming speed, radiation immunity, fast power up and significant benefits for FPGA technology.
    Type: Application
    Filed: January 28, 2014
    Publication date: October 30, 2014
    Applicant: Crossbar, Inc.
    Inventors: Hagop NAZARIAN, Sang Thanh NGUYEN, Tanmay KUMAR
  • Publication number: 20140292368
    Abstract: Providing for a field programmable gate array (FPGA) utilizing resistive random access memory (RRAM) technology is described herein. By way of example, the FPGA can comprise a switching block interconnect having parallel signal input lines crossed by perpendicular signal output lines. RRAM memory cells can be formed at respective intersections of the signal input lines and signal output lines. The RRAM memory cell can include a voltage divider comprising multiple programmable resistive elements arranged electrically in series across a VCC and VSS of the FPGA. A common node of the voltage divider drives a gate of a pass gate transistor configured to activate or deactivate the intersection. The disclosed RRAM memory can provide high transistor density, high logic utilization, fast programming speed, radiation immunity, fast power up and significant benefits for FPGA technology.
    Type: Application
    Filed: June 13, 2014
    Publication date: October 2, 2014
    Inventors: Hagop NAZARIAN, Sang Thanh NGUYEN, Tanmay KUMAR
  • Patent number: 8836411
    Abstract: Digital multilevel memory systems and methods include a charge pump for generating regulated high voltages for various memory operations. The charge pump may include a plurality of pump stages. Aspects of exemplary systems may include charge pumps that performs orderly charging and discharging at low voltage operation conditions. Additional aspects may include features that enable state by state pumping, for example, circuitry that avoids cascaded short circuits among pump stages. Each pump stage may also include circuitry that discharges its nodes, such as via self-discharge through associated pump interconnection(s). Further aspects may also include features that: assist power-up in the various pump stages, double voltage, shift high voltage levels, provide anti-parallel circuit configurations, and/or enable buffering or precharging features, such as self-buffering and self-precharging circuitry.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: September 16, 2014
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Sang Thanh Nguyen, Nasrin Jaffari, Hung Quoc Nguyen, Anh Ly
  • Patent number: 8754671
    Abstract: Providing for a field programmable gate array (FPGA) utilizing resistive random access memory (RRAM) technology is described herein. By way of example, the FPGA can comprise a switching block interconnect having parallel signal input lines crossed by perpendicular signal output lines. RRAM memory cells can be formed at respective intersections of the signal input lines and signal output lines. The RRAM memory cell can include a voltage divider comprising multiple programmable resistive elements arranged electrically in series across a VCC and VSS of the FPGA. A common node of the voltage divider drives a gate of a pass gate transistor configured to activate or deactivate the intersection. The disclosed RRAM memory can provide high transistor density, high logic utilization, fast programming speed, radiation immunity, fast power up and significant benefits for FPGA technology.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: June 17, 2014
    Assignee: Crossbar, Inc.
    Inventors: Hagop Nazarian, Sang Thanh Nguyen, Tanmay Kumar
  • Patent number: 8674749
    Abstract: A digital multilevel memory system includes a charge pump and a voltage regulator for generating regulated high voltages for various memory operations. The charge pump may include a plurality of boost circuits to boost the output of the charge pump during a fast start up. Afterwards, the boost circuits are disabled to allow the charge pump to generate high voltages without boosting. The boost circuits may be successively enabled to boost the voltage. The boost circuits may be loadless. The voltage regulator may operate in an open loop and may include a resistive divider as a reference voltage for regulating the high voltage from the charge pump. The charge pump may include spread spectrum pump clocking to reduce electromagnetic inference for capacitor or inductor on-chip charge pumping.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: March 18, 2014
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Sang Thanh Nguyen, Anh Ly, Hung Q. Nguyen, Wingfu AAron Lau, Nasrin Jaffari, Thuan Trong Vu, Vishal Sarin, Loc B. Hoang
  • Patent number: 8674724
    Abstract: Providing for a field programmable gate array (FPGA) utilizing resistive random access memory (RRAM) technology is described herein. By way of example, the FPGA can comprise a switching block interconnect having parallel signal input lines crossed by perpendicular signal output lines. RRAM memory cells can be formed at respective intersections of the signal input lines and signal output lines. The RRAM memory cell can include a voltage divider comprising multiple programmable resistive elements arranged electrically in series across a VCC and VSS of the FPGA. A common node of the voltage divider drives a gate of a pass gate transistor configured to activate or deactivate the intersection. The disclosed RRAM memory can provide high transistor density, high logic utilization, fast programming speed, radiation immunity, fast power up and significant benefits for FPGA technology.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 18, 2014
    Assignee: Crossbar, Inc.
    Inventors: Hagop Nazarian, Sang Thanh Nguyen, Tanmay Kumar
  • Patent number: 8497667
    Abstract: A digital multilevel memory system includes a charge pump and a voltage regulator for generating regulated high voltages for various memory operations. The charge pump may include a plurality of boost circuits to boost the output of the charge pump during a fast start up. Afterwards, the boost circuits are disabled to allow the charge pump to generate high voltages without boosting. The boost circuits may be successively enabled to boost the voltage. The boost circuits may be loadless. The voltage regulator may operate in an open loop and may include a resistive divider as a reference voltage for regulating the high voltage from the charge pump. The charge pump may include spread spectrum pump clocking to reduce electromagnetic inference for capacitor or inductor on-chip charge pumping.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: July 30, 2013
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Sang Thanh Nguyen, Anh Ly, Hung Q. Nguyen, Wingfu Aaron Lau, Nasrin Jaffari, Thuan Trong Vu, Vishal Sarin, Loc B. Hoang
  • Publication number: 20130187707
    Abstract: Digital multilevel memory systems and methods include a charge pump for generating regulated high voltages for various memory operations. The charge pump may include a plurality of pump stages. Aspects of exemplary systems may include charge pumps that performs orderly charging and discharging at low voltage operation conditions. Additional aspects may include features that enable state by state pumping, for example, circuitry that avoids cascaded short circuits among pump stages. Each pump stage may also include circuitry that discharges its nodes, such as via self-discharge through associated pump interconnection(s). Further aspects may also include features that: assist power-up in the various pump stages, double voltage, shift high voltage levels, provide anti-parallel circuit configurations, and/or enable buffering or precharging features, such as self-buffering and self-precharging circuitry.
    Type: Application
    Filed: December 24, 2012
    Publication date: July 25, 2013
    Applicant: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Sang Thanh Nguyen, Nasrin Jaffari, Hung Quoc Nguyen, Anh Ly
  • Publication number: 20130027081
    Abstract: Providing for a field programmable gate array (FPGA) utilizing resistive random access memory (RRAM) technology is described herein. By way of example, the FPGA can comprise a switching block interconnect having parallel signal input lines crossed by perpendicular signal output lines. RRAM memory cells can be formed at respective intersections of the signal input lines and signal output lines. The RRAM memory cell can include a voltage divider comprising multiple programmable resistive elements arranged electrically in series across a VCC and VSS of the FPGA. A common node of the voltage divider drives a gate of a pass gate transistor configured to activate or deactivate the intersection. The disclosed RRAM memory can provide high transistor density, high logic utilization, fast programming speed, radiation immunity, fast power up and significant benefits for FPGA technology.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: CROSSBAR, INC.
    Inventors: Hagop Nazarian, Sang Thanh Nguyen, Tanmay Kumar
  • Publication number: 20130027079
    Abstract: Providing for a field programmable gate array (FPGA) utilizing resistive random access memory (RRAM) technology is described herein. By way of example, the FPGA can comprise a switching block interconnect having parallel signal input lines crossed by perpendicular signal output lines. RRAM memory cells can be formed at respective intersections of the signal input lines and signal output lines. The RRAM memory cell can include a voltage divider comprising multiple programmable resistive elements arranged electrically in series across a VCC and VSS of the FPGA. A common node of the voltage divider drives a gate of a pass gate transistor configured to activate or deactivate the intersection. The disclosed RRAM memory can provide high transistor density, high logic utilization, fast programming speed, radiation immunity, fast power up and significant benefits for FPGA technology.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: CROSSBAR, INC.
    Inventors: Hagop Nazarian, Sang Thanh Nguyen, Tanmay Kumar
  • Patent number: 8354864
    Abstract: A memory system includes a sense amplifier for detecting content of data memory cells by comparison with a voltage stored in a reference cell. The sense amplifier may comprise a comparator, first and second load circuits, and a low impedance circuit. A first input of the comparator is coupled to the low impedance circuit and a reference voltage node. A second input of the comparator is coupled to a data voltage node. The first load circuit loads a reference cell coupled to the reference voltage node. The second load circuit loads a data cell coupled to the data voltage node.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: January 15, 2013
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Sang Thanh Nguyen, Hung Quoc Nguyen
  • Patent number: 8339187
    Abstract: Digital multilevel memory systems and methods include a charge pump for generating regulated high voltages for various memory operations. The charge pump may include a plurality of pump stages. Aspects of exemplary systems may include charge pumps that performs orderly charging and discharging at low voltage operation conditions. Additional aspects may include features that enable state by state pumping, for example, circuitry that avoids cascaded short circuits among pump stages. Each pump stage may also include circuitry that discharges its nodes, such as via self-discharge through associated pump interconnection(s). Further aspects may also include features that: assist power-up in the various pump stages, double voltage, shift high voltage levels, provide anti-parallel circuit configurations, and/or enable buffering or precharging features, such as self-buffering and self-precharging circuitry.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 25, 2012
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Sang Thanh Nguyen, Nasrin Jaffari, Hung Quoc Nguyen, Anh Ly
  • Patent number: 8270213
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: September 18, 2012
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Patent number: 8232833
    Abstract: Digital multilevel memory systems and methods include a charge pump for generating regulated high voltages for various memory operations. The charge pump may include a plurality of pump stages. Aspects of exemplary systems may include charge pumps that performs orderly charging and discharging at low voltage operation conditions. Additional aspects may include features that enable state by state pumping, for example, circuitry that avoids cascaded short circuits among pump stages. Each pump stage may also include circuitry that discharges its nodes, such as via self-discharge through associated pump interconnection(s). Further aspects may also include features that: assist power-up in the various pump stages, double voltage, shift high voltage levels, provide anti-parallel circuit configurations, and/or enable buffering or precharging features, such as self-buffering and self-precharging circuitry.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: July 31, 2012
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Sang Thanh Nguyen, Nasrin Jaffari, Hung Quoc Nguyen, Anh Ly
  • Publication number: 20120074923
    Abstract: A digital multilevel memory system includes a charge pump and a voltage regulator for generating regulated high voltages for various memory operations. The charge pump may include a plurality of boost circuits to boost the output of the charge pump during a fast start up. Afterwards, the boost circuits are disabled to allow the charge pump to generate high voltages without boosting. The boost circuits may be successively enabled to boost the voltage. The boost circuits may be loadless. The voltage regulator may operate in an open loop and may include a resistive divider as a reference voltage for regulating the high voltage from the charge pump. The charge pump may include spread spectrum pump clocking to reduce electromagnetic inference for capacitor or inductor on-chip charge pumping.
    Type: Application
    Filed: November 29, 2011
    Publication date: March 29, 2012
    Applicant: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Sang Thanh Nguyen, Anh Ly, Hung O. Nguyen, Wingfu Aaron Lau, Nasrin Jaffari, Thuan Trong Vu, Vishal Sarin, Loc B. Hoang