Patents Assigned to STMicroelectroncis S.r.l.
  • Method for reading semiconductor memories and semiconductor memory
    Patent number: 8018786
    Abstract: A phase change memory cells including a memory element or a threshold device is read using a read current which does not threshold either the memory element or the threshold device in the case of both a set and a reset memory element. As a result, higher currents may be avoided, increasing read endurance. A sensing circuit includes a charging rate detector coupled to a selected address line and sensing a rate of change of a voltage on the selected address line.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: September 13, 2011
    Assignee: STMicroelectroncis S.r.l.
    Inventor: Ward Parkinson