×

Memory cell that can store data nonvolatily using a ferroelectric capacitor, and a semiconductor memory device including such a memory cell

  • US 5,751,627 A
  • Filed: 01/17/1997
  • Issued: 05/12/1998
  • Est. Priority Date: 12/26/1994
  • Status: Expired due to Fees
First Claim
Patent Images

1. A memory cell that can store information in a non-volatile manner, comprising:

  • a plurality of bit line pairs,a plurality of word lines crossing said bit line pairs,a plurality of bistable memory elements arranged in corresponding crossing of said bit line pairs and said word lines,each of said bistable memory elements includinga first amplifying circuit having an input and an output,and a second amplifying circuit having an output and an input coupled to said input and said output, respectively, of said first amplifying circuit,a node to which a fixed potential is supplied, a first data output node coupled to said output of said first amplifying circuit,a second data output node coupled to said output of said second amplifying circuit,a first ferroelectric capacitor having one end coupled to said second data output node and the other end coupled to said node to which said fixed potential is supplied,a second ferroelectric capacitor having one end coupled to said first data output node and the other end coupled to said node to which said fixed potential is supplied,a first access transistor connected between said first data output node and the first bit line of one of said bit line pairs, anda second access transistor connected between said data output node and the second bit line pairing with said first bit line, andeach of said first and said second access transistors being controlled to be conductive/nonconductive by a potential of corresponding said word line,a plurality of first data output lines, each connected to corresponding said first data output node, anda plurality of second data output lines, each connected to corresponding said second data output node.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×