Patents Represented by Attorney, Agent or Law Firm Westman, Champlain & Kelly
  • Patent number: 6650155
    Abstract: A power-on reset circuit is provided, which includes a ground input, a power input having a voltage relative to the ground input, a reset output, a self-initializing latch, a high voltage trigger circuit and a discharge circuit. The self-initializing latch has first and second latch nodes which are initialized to logic high and low states, respectively, upon initial application of power to the power input. One of the first and second latch nodes is coupled to the reset output. The high voltage trigger circuit is coupled to the first latch node and reverses the states of the first and second latch nodes when the voltage rises above a high trigger voltage. The discharge circuit is coupled to the second latch node and has a switch circuit, which selectively couples the second latch node to the ground input when the voltage falls below a low trigger voltage.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: November 18, 2003
    Assignee: LSI Logic Corporation
    Inventors: Toan D. Nguyen, Matthew J. Russell