Patents by Inventor Masanori Isoda

Masanori Isoda 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: 20160109915
    Abstract: A semiconductor device includes an identification information generation circuit having a power supply control circuit whose output voltage is controlled by a control signal, and a memory array having a first cell power line and a second cell power line. The power supply control circuit outputs a first supply voltage and a second supply voltage to a first cell power line and a second power line, respectively, when the control signal is in a first state, and outputs an intermediate voltage to the first cell power line and the second cell power line when the control signal is in a second state.
    Type: Application
    Filed: December 21, 2015
    Publication date: April 21, 2016
    Applicant: Renesas Electronics Corporation
    Inventors: Masanori ISODA, Hidehiro FUJIWARA, Koji NII
  • Patent number: 9256261
    Abstract: A semiconductor device includes an identification information generation circuit having a power supply control circuit whose output voltage is controlled by a control signal, and a memory array having a first cell power line and a second cell power line. The power supply control circuit outputs a first supply voltage and a second supply voltage to a first cell power line and a second power line, respectively, when the control signal is in a first state, and outputs an intermediate voltage to the first cell power line and the second cell power line when the control signal is in a second state.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: February 9, 2016
    Assignee: Renesas Electronics Corporation
    Inventors: Masanori Isoda, Hidehiro Fujiwara, Koji Nii
  • Publication number: 20150380076
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Application
    Filed: August 25, 2015
    Publication date: December 31, 2015
    Inventors: Noriaki MAEDA, Yoshihiro SHINOZAKI, Masanao YAMAOKA, Yasuhisa SHIMAZAKI, Masanori ISODA, Koji NII
  • Patent number: 9123435
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: September 1, 2015
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nii
  • Publication number: 20130326243
    Abstract: A semiconductor device includes an identification information generation circuit having a power supply control circuit whose output voltage is controlled by a control signal, and a memory array having a first cell power line and a second cell power line. The power supply control circuit outputs a first supply voltage and a second supply voltage to a first cell power line and a second power line, respectively, when the control signal is in a first state, and outputs an intermediate voltage to the first cell power line and the second cell power line when the control signal is in a second state.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 5, 2013
    Applicant: Renesas Electronics Corporation
    Inventors: Masanori ISODA, Hidehiro Fujiwara, Koji Nll
  • Patent number: 8441843
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: May 14, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nii
  • Publication number: 20120044775
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Application
    Filed: October 31, 2011
    Publication date: February 23, 2012
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nii
  • Patent number: 8076957
    Abstract: The present invention is directed to reduce the chip area of a semiconductor integrated circuit. A semiconductor integrated circuit of the invention includes a first transistor, a second transistor disposed adjacent to the first transistor along a Y axis, and a third transistor disposed adjacent to the second transistor along an X axis. The semiconductor integrated circuit further includes a fourth transistor disposed adjacent to the third transistor along the Y axis and disposed adjacent to the first transistor along the X axis. The first to fourth transistors share a well, and an output signal of the first transistor and an output signal of the second transistor have phases opposite to each other. An output signal of the second transistor and an output signal of the third transistor have phases opposite to each other. An output of the third transistor and an output signal of the fourth transistor have phases opposite to each other.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: December 13, 2011
    Assignee: Renesas Electronics Corporation
    Inventor: Masanori Isoda
  • Patent number: 8072799
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: December 6, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nii
  • Publication number: 20110043292
    Abstract: The present invention is directed to reduce the chip area of a semiconductor integrated circuit. A semiconductor integrated circuit of the invention includes a first transistor, a second transistor disposed adjacent to the first transistor along a Y axis, and a third transistor disposed adjacent to the second transistor along an X axis. The semiconductor integrated circuit further includes a fourth transistor disposed adjacent to the third transistor along the Y axis and disposed adjacent to the first transistor along the X axis. The first to fourth transistors share a well, and an output signal of the first transistor and an output signal of the second transistor have phases opposite to each other. An output signal of the second transistor and an output signal of the third transistor have phases opposite to each other. An output of the third transistor and an output signal of the fourth transistor have phases opposite to each other.
    Type: Application
    Filed: October 29, 2010
    Publication date: February 24, 2011
    Inventor: Masanori ISODA
  • Patent number: 7843227
    Abstract: The present invention is directed to reduce the chip area of a semiconductor integrated circuit. A semiconductor integrated circuit of the invention includes a first transistor, a second transistor disposed adjacent to the first transistor along a Y axis, and a third transistor disposed adjacent to the second transistor along an X axis. The semiconductor integrated circuit further includes a fourth transistor disposed adjacent to the third transistor along the Y axis and disposed adjacent to the first transistor along the X axis. The first to fourth transistors share a well, and an output signal of the first transistor and an output signal of the second transistor have phases opposite to each other. An output signal of the second transistor and an output signal of the third transistor have phases opposite to each other. An output of the third transistor and an output signal of the fourth transistor have phases opposite to each other.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: November 30, 2010
    Assignee: Renesas Electronics Corporation
    Inventor: Masanori Isoda
  • Publication number: 20100188887
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Application
    Filed: March 29, 2010
    Publication date: July 29, 2010
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nii
  • Patent number: 7715223
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: May 11, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nll
  • Publication number: 20090146693
    Abstract: The present invention is directed to reduce the chip area of a semiconductor integrated circuit. A semiconductor integrated circuit of the invention includes a first transistor, a second transistor disposed adjacent to the first transistor along a Y axis, and a third transistor disposed adjacent to the second transistor along an X axis. The semiconductor integrated circuit further includes a fourth transistor disposed adjacent to the third transistor along the Y axis and disposed adjacent to the first transistor along the X axis. The first to fourth transistors share a well, and an output signal of the first transistor and an output signal of the second transistor have phases opposite to each other. An output signal of the second transistor and an output signal of the third transistor have phases opposite to each other. An output of the third transistor and an output signal of the fourth transistor have phases opposite to each other.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 11, 2009
    Inventor: Masanori ISODA
  • Publication number: 20090116279
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Application
    Filed: December 5, 2008
    Publication date: May 7, 2009
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nll
  • Patent number: 7477537
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: January 13, 2009
    Assignee: Renesas Technology Corp.
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nii
  • Patent number: 7420834
    Abstract: The invention provides a semiconductor integrated circuit device provided with an SRAM that satisfies the requirements for both the SNM and the write margin with a low supply voltage. The semiconductor integrated circuit device include: multiple static memory cells provided in correspondence with multiple word lines and multiple complimentary bit lines; multiple memory cell power supply lines that each supply an operational voltage to each of the multiple memory cells connected to the multiple complimentary bit lines each; multiple power supply circuits comprised of resistive units that each supply a power supply voltage to the memory cell power supply lines each; and a pre-charge circuit that supplies a pre-charge voltage corresponding to the power supply voltage to the complimentary bit lines, wherein the memory cell power supply lines are made to have coupling capacitances to thereby transmit a write signal on corresponding complimentary bit lines.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: September 2, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Noriaki Maeda, Yoshihiro Shinozaki, Masanao Yamaoka, Yasuhisa Shimazaki, Masanori Isoda, Koji Nii
  • Patent number: 7352611
    Abstract: Data breakdown due to fluctuation of an operation power source is suppressed by suppressing a sub-threshold leakage current. A semiconductor integrated circuit includes a pair of power source wires, a plurality of static memory cells, a voltage control circuit for controlling an operation voltage applied from the power source wires to the static memory cells, a monitor circuit for monitoring a voltage of the power source wires and a mode control circuit for controlling a plurality of operation modes. The monitor circuit can detect a change of decrease of a potential difference between the pair of power source wires.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: April 1, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Masanori Isoda, Masanao Yamaoka
  • Publication number: 20070115748
    Abstract: Data breakdown due to fluctuation of an operation power source is suppressed by suppressing a sub-threshold leakage current. A semiconductor integrated circuit includes a pair of power source wires, a plurality of static memory cells, a voltage control circuit for controlling an operation voltage applied from the power source wires to the static memory cells, a monitor circuit for monitoring a voltage of the power source wires and a mode control circuit for controlling a plurality of operation modes. The monitor circuit can detect a change of decrease of a potential difference between the pair of power source wires.
    Type: Application
    Filed: January 19, 2007
    Publication date: May 24, 2007
    Inventors: Masanori Isoda, Masanao Yamaoka
  • Patent number: 7196960
    Abstract: Data breakdown due to fluctuation of an operation power source is suppressed by suppressing a sub-threshold leakage current. A semiconductor integrated circuit includes a pair of power source wires, a plurality of static memory cells, a voltage control circuit for controlling an operation voltage applied from the power source wires to the static memory cells, a monitor circuit for monitoring a voltage of the power source wires and a mode control circuit for controlling a plurality of operation modes. The monitor circuit can detect a change of decrease of a potential difference between the pair of power source wires.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: March 27, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Masanori Isoda, Masanao Yamaoka