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Common drain non-volatile multiple-time programmable memory

  • US 8,305,805 B2
  • Filed: 12/02/2009
  • Issued: 11/06/2012
  • Est. Priority Date: 11/03/2008
  • Status: Expired due to Fees
First Claim
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1. A programmable non-volatile device situated on a substrate, the programmable non-volatile device comprising:

  • a floating gate, wherein said floating gate is comprised of a material that is also used as a gate for a transistor device also situated on the substrate and associated with at least one of a logic gate or a volatile memory;

    a common drain region which is shared in common with at least one additional programmable non-volatile device;

    a source region; and

    an n-type channel coupling said source region and said common drain region;

    wherein the common drain region overlaps a sufficient portion of said floating gate to areally capacitively couple the common drain region to the floating gate such that a programming voltage for the device applied across said common drain region and said source region can be imparted to said floating gate through the areal capacitive coupling from said common drain region to said floating gate.

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