JPS5258330A - Read only memory - Google Patents

Read only memory

Info

Publication number
JPS5258330A
JPS5258330A JP13437175A JP13437175A JPS5258330A JP S5258330 A JPS5258330 A JP S5258330A JP 13437175 A JP13437175 A JP 13437175A JP 13437175 A JP13437175 A JP 13437175A JP S5258330 A JPS5258330 A JP S5258330A
Authority
JP
Japan
Prior art keywords
read
memory
rom
prevent
output
Prior art date
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.)
Granted
Application number
JP13437175A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5740595B2 (zh
Inventor
Masaaki Ueno
Norimasa Yamada
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13437175A priority Critical patent/JPS5258330A/ja
Publication of JPS5258330A publication Critical patent/JPS5258330A/ja
Publication of JPS5740595B2 publication Critical patent/JPS5740595B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
    • G11C17/08—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements
    • G11C17/10—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements in which contents are determined during manufacturing by a predetermined arrangement of coupling elements, e.g. mask-programmable ROM
    • G11C17/12—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements in which contents are determined during manufacturing by a predetermined arrangement of coupling elements, e.g. mask-programmable ROM using field-effect devices
    • G11C17/126—Virtual ground arrays

Landscapes

  • Read Only Memory (AREA)
JP13437175A 1975-11-07 1975-11-07 Read only memory Granted JPS5258330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13437175A JPS5258330A (en) 1975-11-07 1975-11-07 Read only memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13437175A JPS5258330A (en) 1975-11-07 1975-11-07 Read only memory

Publications (2)

Publication Number Publication Date
JPS5258330A true JPS5258330A (en) 1977-05-13
JPS5740595B2 JPS5740595B2 (zh) 1982-08-28

Family

ID=15126810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13437175A Granted JPS5258330A (en) 1975-11-07 1975-11-07 Read only memory

Country Status (1)

Country Link
JP (1) JPS5258330A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101797A (ja) * 1983-11-07 1985-06-05 Hitachi Ltd 半導体記憶回路装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5766187U (zh) * 1980-10-09 1982-04-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101797A (ja) * 1983-11-07 1985-06-05 Hitachi Ltd 半導体記憶回路装置

Also Published As

Publication number Publication date
JPS5740595B2 (zh) 1982-08-28

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