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MOS one transistor cell RAM having divided and balanced bit lines, coupled by regenerative flip-flop sense amplifiers, and balanced access circuitry

  • US 4,045,783 A
  • Filed: 04/12/1976
  • Issued: 08/30/1977
  • Est. Priority Date: 04/12/1976
  • Status: Expired due to Term
First Claim
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1. A dynamic MOS memory having a plurality of storage elements arranged;

  • as a matrix, in rows and columns, each of said storage elements comprising a MOS transistor connected in series with a storage capacitor means said memory further comprising;

    a. a balanced data access circuit for reading the binary status of, or writing a binary signal in, any selected storage element, said access circuit having first and second complementary data terminals;

    b. a balanced data access bus, having first and second complementary data bus lines, the first and second complementary data bus lines being respectively connected to the first and second complementary data terminals of the balanced data access circuit;

    c. a plurality of regenerative flip-flop balanced sense amplifiers, each of said sense amplifiers having first and second input/output nodes;

    d. a plurality of bit lines, each bit line being divided into a first and a second part, the MOS transistors of the storage elements corresponding to any one bit line being connected in substantially equal number to the first and second parts of said any one bit line, the first and second parts of any one bit line, being respectively connected to the first and second input/output nodes of the regenerative flip-flop balanced sense amplifier corresponding to said any one bit line, and extending, adjacent each other, from said sense amplifier to the balanced data access bus for respective connection through a first and a second MOS access transistor to the first and second complementary data bus lines;

    whereby, by turning ON the first and second MOS access transistors corresponding to a particular bit line, a substantially electrically balanced path is established from the first and second input/output nodes of the regenerative flip-flop balanced sense amplifier corresponding to said particular bit line to the first and second complementary data terminals of the balanced data access circuit.

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