JPS5580888A - Read only memory circuit - Google Patents

Read only memory circuit

Info

Publication number: JPS5580888A
Authority: JP; Japan
Prior art keywords: comparator; value information; circuit; comparison output; constitution
Prior art date: 1978-12-12
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.): Pending

Application number

JP15442978A

Other languages

English (en)

Inventor

Nobuaki Ieda

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

NTT Inc

Original Assignee

Nippon Telegraph and Telephone Corp

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.)

1978-12-12

Filing date

1978-12-12

Publication date

1980-06-18

1978-12-12 Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp

1978-12-12 Priority to JP15442978A priority Critical patent/JPS5580888A/ja

1980-06-18 Publication of JPS5580888A publication Critical patent/JPS5580888A/ja

Status Pending legal-status Critical Current

Links

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/56—Digital 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
- G11C11/5692—Digital 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
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/56—Digital 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
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/32—Timing circuits
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2211/00—Indexing scheme relating to digital stores characterized by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C2211/56—Indexing scheme relating to G11C11/56 and sub-groups for features not covered by these groups
- G11C2211/563—Multilevel memory reading aspects
- G11C2211/5634—Reference cells

Landscapes

Engineering & Computer Science (AREA)
Computer Hardware Design (AREA)
Dram (AREA)
Read Only Memory (AREA)

JP15442978A 1978-12-12 1978-12-12 Read only memory circuit Pending JPS5580888A (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
JP15442978A JPS5580888A (en)	1978-12-12	1978-12-12	Read only memory circuit

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP15442978A JPS5580888A (en)	1978-12-12	1978-12-12	Read only memory circuit

Publications (1)

Publication Number	Publication Date
JPS5580888A true JPS5580888A (en)	1980-06-18

Family

ID=15583976

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP15442978A Pending JPS5580888A (en)	1978-12-12	1978-12-12	Read only memory circuit

Country Status (1)

Country	Link
JP (1)	JPS5580888A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS58137181A (ja) *	1982-02-05	1983-08-15	Toshiba Corp	半導体メモリ
US5526306A (en) *	1994-02-10	1996-06-11	Mega Chips Corporation	Semiconductor memory device and method of fabricating the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5381024A (en) *	1976-12-27	1978-07-18	Fujitsu Ltd	Semiconductor memory divice
JPS54162934A (en) *	1978-06-13	1979-12-25	Ibm	Read only memory

1978
- 1978-12-12 JP JP15442978A patent/JPS5580888A/ja active Pending

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5381024A (en) *	1976-12-27	1978-07-18	Fujitsu Ltd	Semiconductor memory divice
JPS54162934A (en) *	1978-06-13	1979-12-25	Ibm	Read only memory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS58137181A (ja) *	1982-02-05	1983-08-15	Toshiba Corp	半導体メモリ
US5526306A (en) *	1994-02-10	1996-06-11	Mega Chips Corporation	Semiconductor memory device and method of fabricating the same

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