Patents by Inventor Tom W. Voshell

Tom W. Voshell 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).

  • Single ended row select for a MRAM device
    Patent number: 6751117
    Abstract: A method and apparatus for selecting a rowline in a MRAM device. A rowline select circuit is provided on a first side of each rowline and connects the rowline to ground when a memory cell in the rowline is being written to and to a voltage source when a memory cell in the rowline is being read. A rowline stack select circuit is provided on the second side of each rowline and is connected to one rowline on each plane of memory. When a memory cell is being accessed, the rowline containing that memory cell as well as each other rowline connected to the same rowline stack select circuit are connected to a current source.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: June 15, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Tom W. Voshell, Mirmajid Seyyedy
  • Single ended row select for a MRAM device
    Publication number: 20030202401
    Abstract: A method and apparatus for selecting a rowline in a MRAM device. A rowline select circuit is provided on a first side of each rowline and connects the rowline to ground when a memory cell in the rowline is being written to and to a voltage source when a memory cell in the rowline is being read. A rowline stack select circuit is provided on the second side of each rowline and is connected to one rowline on each plane of memory. When a memory cell is being accessed, the rowline containing that memory cell as well as each other rowline connected to the same rowline stack select circuit are connected to a current source.
    Type: Application
    Filed: May 12, 2003
    Publication date: October 30, 2003
    Inventors: Tom W. Voshell, Mirmajid Seyyedy
  • Single ended row select for a MRAM device
    Patent number: 6574137
    Abstract: A method and apparatus for selecting a rowline in a MRAM device. A rowline select circuit is provided on a first side of each rowline and connects the rowline to ground when a memory cell in the rowline is being written to and to a voltage source when a memory cell in the rowline is being read. A rowline stack select circuit is provided on the second side of each rowline and is connected to one rowline on each plane of memory. When a memory cell is being accessed, the rowline containing that memory cell as well as each other rowline connected to the same rowline stack select circuit are connected to a current source.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: June 3, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Tom W. Voshell, Mirmajid Seyyedy
  • Single ended row select for a MRAM device
    Publication number: 20030043619
    Abstract: A method and apparatus for selecting a rowline in a MRAM device. A rowline select circuit is provided on a first side of each rowline and connects the rowline to ground when a memory cell in the rowline is being written to and to a voltage source when a memory cell in the rowline is being read. A rowline stack select circuit is provided on the second side of each rowline and is connected to one rowline on each plane of memory. When a memory cell is being accessed, the rowline containing that memory cell as well as each other rowline connected to the same rowline stack select circuit are connected to a current source.
    Type: Application
    Filed: August 30, 2001
    Publication date: March 6, 2003
    Inventors: Tom W. Voshell, Mirmajid Seyyedy
  • Output driver having a programmable edge rate
    Patent number: 6285215
    Abstract: A programmable output driver is comprised of a first signal path for pulling an output node up to a first voltage level and a second signal path for pulling the output node down to a second voltage level. A plurality of capacitors and a plurality of switches are provided for programmably connecting certain of the plurality of capacitors to the second signal path to control the falling edge of a signal output from the driver. In a preferred embodiment, the first signal path includes a boot circuit which primarily controls the leading edge of the signal output from the driver. A method of operating an output driver is also disclosed.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: September 4, 2001
    Assignee: Micron Technology, Inc.
    Inventor: Tom W. Voshell