JPH053080B2 - - Google Patents

Info

Publication number
JPH053080B2
JPH053080B2 JP18524686A JP18524686A JPH053080B2 JP H053080 B2 JPH053080 B2 JP H053080B2 JP 18524686 A JP18524686 A JP 18524686A JP 18524686 A JP18524686 A JP 18524686A JP H053080 B2 JPH053080 B2 JP H053080B2
Authority
JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP18524686A
Other versions
JPS6342100A (en
Inventor
Yasuo Suzuki
Yasuaki Suzuki
Hiroshi Hirao
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP18524686A priority Critical patent/JPH053080B2/ja
Publication of JPS6342100A publication Critical patent/JPS6342100A/ja
Publication of JPH053080B2 publication Critical patent/JPH053080B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11CSTATIC STORES
    • G11C11/00Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/56Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
    • G11C11/5692Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency read-only digital stores using storage elements with more than two stable states
JP18524686A 1986-08-08 1986-08-08 Expired - Fee Related JPH053080B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18524686A JPH053080B2 (ja) 1986-08-08 1986-08-08

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP18524686A JPH053080B2 (ja) 1986-08-08 1986-08-08
EP87307026A EP0257891B1 (en) 1986-08-08 1987-08-07 Read only memory device
DE8787307026T DE3783100T2 (de) 1986-08-08 1987-08-07 Festwertspeicheranordnung.
US07/082,696 US4809224A (en) 1986-08-08 1987-08-07 Read only memory device with memory cells each storing one of three states
KR1019870008694A KR900008636B1 (ko) 1986-08-08 1987-08-08 각각이 3상태중 하나를 기억하는 메모리셀을 갖춘 판독전용기억(rom)장치

Publications (2)

Publication Number Publication Date
JPS6342100A JPS6342100A (en) 1988-02-23
JPH053080B2 true JPH053080B2 (ja) 1993-01-13

Family

ID=16167446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18524686A Expired - Fee Related JPH053080B2 (ja) 1986-08-08 1986-08-08

Country Status (5)

Country Link
US (1) US4809224A (ja)
EP (1) EP0257891B1 (ja)
JP (1) JPH053080B2 (ja)
KR (1) KR900008636B1 (ja)
DE (1) DE3783100T2 (ja)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07105146B2 (ja) * 1988-07-29 1995-11-13 三菱電機株式会社 不揮発性記憶装置
JPH02260298A (en) * 1989-03-31 1990-10-23 Oki Electric Ind Co Ltd Non-volatile multilevel memory device
US5289406A (en) * 1990-08-28 1994-02-22 Mitsubishi Denki Kabushiki Kaisha Read only memory for storing multi-data
US5218569A (en) * 1991-02-08 1993-06-08 Banks Gerald J Electrically alterable non-volatile memory with n-bits per memory cell
US6353554B1 (en) 1995-02-27 2002-03-05 Btg International Inc. Memory apparatus including programmable non-volatile multi-bit memory cell, and apparatus and method for demarcating memory states of the cell
US6002614A (en) * 1991-02-08 1999-12-14 Btg International Inc. Memory apparatus including programmable non-volatile multi-bit memory cell, and apparatus and method for demarcating memory states of the cell
US5412601A (en) * 1992-08-31 1995-05-02 Nippon Steel Corporation Non-volatile semiconductor memory device capable of storing multi-value data in each memory cell
JPH06139786A (ja) * 1992-10-27 1994-05-20 Fujitsu Ltd 電気的消去及び書込み可能rom
US5309389A (en) * 1993-08-27 1994-05-03 Honeywell Inc. Read-only memory with complementary data lines
EP0724266B1 (en) * 1995-01-27 2001-12-12 STMicroelectronics S.r.l. Successive approximation method for sensing multiple-level non-volatile memory cells and sensing circuit using such method
US5528534A (en) * 1995-03-21 1996-06-18 At&T Corp. High-density read-only memory employing multiple bit-line interconnection
EP0734024B1 (en) * 1995-03-23 2000-01-26 STMicroelectronics S.r.l. Sensing circuit for serial dichotomic sensing of multiple-levels non-volatile memory cells
US5841874A (en) * 1996-08-13 1998-11-24 Motorola, Inc. Ternary CAM memory architecture and methodology
JP3093655B2 (ja) * 1996-09-27 2000-10-03 日本電気アイシーマイコンシステム株式会社 多値マスクromのワード線駆動方法及びその駆動回路
JPH10326494A (ja) * 1997-03-24 1998-12-08 Seiko Epson Corp 半導体記憶装置
US5847991A (en) * 1997-05-20 1998-12-08 Tong; Hing S. System for recording voice as analog values programmed into single bit cells EEPROMs or flash EEPROM
KR100295135B1 (ko) * 1997-12-31 2001-07-12 윤종용 멀티-비트 셀 구조를 갖는 비휘발성 메모리 장치
IL130821A (en) * 1998-07-07 2004-01-04 Dsp Group Ltd Two bit per cell rom using a two phase current sense

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US32401A (en) * 1861-05-21 Strickland kneass
JPS5856199B2 (ja) * 1980-09-25 1983-12-13 Tokyo Shibaura Electric Co
US4404655A (en) * 1981-01-28 1983-09-13 General Instrument Corporation Data sense apparatus for use in multi-threshold read only memory
US4449203A (en) * 1981-02-25 1984-05-15 Motorola, Inc. Memory with reference voltage generator
EP0136119B1 (en) * 1983-09-16 1988-06-29 Fujitsu Limited Plural-bit-per-cell read-only memory
DE3569929D1 (en) * 1985-02-08 1989-06-08 Huels Chemische Werke Ag Coupling agent for the preparation of vulcanisates having a good filler-rubber adhesion

Also Published As

Publication number Publication date
EP0257891A2 (en) 1988-03-02
EP0257891A3 (en) 1990-04-11
JPS6342100A (en) 1988-02-23
US4809224A (en) 1989-02-28
KR900008636B1 (ko) 1990-11-26
DE3783100D1 (de) 1993-01-28
EP0257891B1 (en) 1992-12-16
KR880003335A (ko) 1988-05-16
DE3783100T2 (de) 1993-04-22

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees