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Power on reset circuit for a microcontroller

  • US 6,868,500 B1
  • Filed: 06/22/2001
  • Issued: 03/15/2005
  • Est. Priority Date: 10/26/2000
  • Status: Expired due to Term
First Claim
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1. A circuit for providing power on reset functions and a plurality of functions for power system control for a microcontroller, comprising:

  • a first stage for performing power on reset functions and functions related to operational, post power on reset power stability;

    a second stage for stimulating a reliable source of startup power during power on reset, wherein said second stage produces a first signal for forcing a switch mode pump to drive up voltage provided to said common power supply and a second signal forcing said microcontroller into a power on reset condition;

    a bus for providing an interconnection with a processor; and

    a processor providing dynamic control over said first stage.

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