Patents Represented by Attorney Russell PLLC
  • Patent number: 8027191
    Abstract: A write circuit for providing distinctive write currents to a chalcogenide memory cell is disclosed. The write circuit includes a current amplitude trim module, a current amplification and distribution module, and a write current shaping module. The current amplitude trim module provides a well-compensated current across a predetermined range of temperatures, voltage supplies and process corners intended for programming a chalcogenide memory cell. The current amplification and distribution module amplifies the well-compensated current in order to meet a programming requirement of the chalcogenide memory cell. The write current shaping module supplies an appropriate amount of write “0” current or write “1” current, based on the amplified current, to program the chalcogenide memory cell accordingly.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: September 27, 2011
    Assignees: BAE Systems Information and Electronic Systems Integration Inc., Ovonyx, Inc.
    Inventors: Bin Li, George Michael