Patents by Inventor Michael A. Dreesen

Michael A. Dreesen 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: 8832508
    Abstract: Apparatus and methods are provided for concurrently selecting multiple arrays of memory cells when accessing a memory element. A memory element includes a first array of one or more memory cells coupled to a first bit line node, a second array of one or more memory cells coupled to a second bit line node, access circuitry for accessing a first memory cell in the first array, a first transistor coupled between the first bit line node and the access circuitry, and a second transistor coupled between the second bit line node and the access circuitry. A controller is coupled to the first transistor and the second transistor, and the controller is configured to concurrently activate the first transistor and the second transistor to access the first memory cell in the first array.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: September 9, 2014
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Carson Henrion, Michael Dreesen
  • Publication number: 20140177349
    Abstract: Embodiments are described for a method for regulating sleep mode of a plurality of sub-banks in an SRAM array by isolating all of the sub-banks from a regulator upon access to at least one sub-bank that causes the accessed sub-bank to go to an operating voltage, and isolating the accessed sub-bank from non accessed sub-banks, while maintaining a sleep voltage on a load memory array and each of the sub-banks through the regulator; comparing a voltage on the non accessed sub-banks to a voltage output of the regulator; and providing a sleep voltage level to all of the sub-banks through the regulator when the voltage on the non accessed sub-banks is less than the sleep voltage.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: Advanced Micro Devices Inc.
    Inventors: Michael DREESEN, Stephen GREENWOOD, Bruce DOYLE
  • Patent number: 8509017
    Abstract: A memory device is provided that includes a memory cell, a voltage input, a plurality of bit lines, an amplifier connected to only a particular one of the bit lines, and a switch that is coupled to the amplifier and the voltage input. The switch is configured to prevent the voltage input from being electrically coupled to the amplifier when the plurality of bit lines are electrically floating.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: August 13, 2013
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Michael Dreesen
  • Patent number: 8385140
    Abstract: Apparatus are provided for memory elements and related computing modules. An exemplary memory element includes a first array of one or more memory cells, a second array of one or more memory cells, write selection circuitry associated with the first array, and read selection circuitry associated with the second array. The write selection circuitry and the read selection circuitry are configured to be activated concurrently.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: February 26, 2013
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Michael Dreesen, Carson Henrion
  • Publication number: 20120206987
    Abstract: A memory device is provided that includes a memory cell, a voltage input, a plurality of bit lines, an amplifier connected to only a particular one of the bit lines, and a switch that is coupled to the amplifier and the voltage input. The switch is configured to prevent the voltage input from being electrically coupled to the amplifier when the plurality of bit lines are electrically floating.
    Type: Application
    Filed: February 16, 2011
    Publication date: August 16, 2012
    Applicant: ADVANCED MICRO DEVICES, INC.
    Inventor: Michael DREESEN
  • Publication number: 20120127805
    Abstract: Apparatus are provided for memory elements and related computing modules. An exemplary memory element includes a first array of one or more memory cells, a second array of one or more memory cells, write selection circuitry associated with the first array, and read selection circuitry associated with the second array. The write selection circuitry and the read selection circuitry are configured to be activated concurrently.
    Type: Application
    Filed: November 18, 2010
    Publication date: May 24, 2012
    Applicant: ADVANCED MICRO DEVICES, INC.
    Inventors: Michael DREESEN, Carson HENRION
  • Publication number: 20120131399
    Abstract: Apparatus and methods are provided for concurrently selecting multiple arrays of memory cells when accessing a memory element. A memory element includes a first array of one or more memory cells coupled to a first bit line node, a second array of one or more memory cells coupled to a second bit line node, access circuitry for accessing a first memory cell in the first array, a first transistor coupled between the first bit line node and the access circuitry, and a second transistor coupled between the second bit line node and the access circuitry. A controller is coupled to the first transistor and the second transistor, and the controller is configured to concurrently activate the first transistor and the second transistor to access the first memory cell in the first array.
    Type: Application
    Filed: November 18, 2010
    Publication date: May 24, 2012
    Applicant: ADVANCED MICRO DEVICES, INC.
    Inventors: Carson HENRION, Michael DREESEN
  • Patent number: 7724578
    Abstract: A memory device includes a memory array and a sense amplifier. The memory array includes a floating body cell configured to store a bit value. The sense amplifier includes a bit output configured to provide an output voltage representative of the bit value and a reference source configured to provide a reference voltage. The sense amplifier further includes a current mirror configured to provide a current to the first floating body cell based on the reference voltage, and a differential amplifier circuit configured to determine the output voltage based on the reference voltage and a voltage across the floating body cell resulting from application of the current to the floating body cell.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: May 25, 2010
    Inventors: Michael A. Dreesen, John J. Wuu, Donald R. Weiss
  • Publication number: 20080144367
    Abstract: A memory device includes a memory array and a sense amplifier. The memory array includes a floating body cell configured to store a bit value. The sense amplifier includes a bit output configured to provide an output voltage representative of the bit value and a reference source configured to provide a reference voltage. The sense amplifier further includes a current mirror configured to provide a current to the first floating body cell based on the reference voltage, and a differential amplifier circuit configured to determine the output voltage based on the reference voltage and a voltage across the floating body cell resulting from application of the current to the floating body cell.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 19, 2008
    Applicant: Advanced Micro Devices, Inc.
    Inventors: Michael A. Dreesen, John J. Wuu, Donald R. Weiss