Patents by Inventor Matthew G. Stout

Matthew G. Stout 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).

  • Design-for-test circuit for low pin count devices
    Patent number: 7274203
    Abstract: A design-for-test (DFT) circuit for an integrated circuit (IC) for enabling accurate quiescent current testing. The IC includes a voltage supply pin, a ground pin and an internal voltage regulator coupled between the voltage supply and ground pins for providing an internal output voltage. The DFT circuit includes a voltage storage device which couples to the voltage regulator to temporarily maintain the internal output voltage when the voltage regulator is disabled. The mode control circuit detects a quiescent current test mode, disables the voltage regulator and decouples the voltage regulator from the voltage storage device when the quiescent current test mode is detected. The DFT circuit may include an enable circuit which generates a freeze signal when the quiescent current test mode is detected, and at least one switch which decouples the voltage regulator from the voltage storage node. The DFT circuit is particularly useful for low pin-count ICs.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: September 25, 2007
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Kenneth P. Tumin, George E. Baker, Dale J. McQuirk, Matthew G. Stout