JPS5477544A - Logic circuit - Google Patents

Logic circuit

Info

Publication number
JPS5477544A
JPS5477544A JP13888678A JP13888678A JPS5477544A JP S5477544 A JPS5477544 A JP S5477544A JP 13888678 A JP13888678 A JP 13888678A JP 13888678 A JP13888678 A JP 13888678A JP S5477544 A JPS5477544 A JP S5477544A
Authority
JP
Japan
Prior art keywords
rom
bit
address decoder
select
degree
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
JP13888678A
Other languages
Japanese (ja)
Other versions
JPS5713954B2 (en
Inventor
Hirohito Kawagoe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13888678A priority Critical patent/JPS5477544A/en
Publication of JPS5477544A publication Critical patent/JPS5477544A/en
Publication of JPS5713954B2 publication Critical patent/JPS5713954B2/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
    • G11C17/123—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 comprising cells having several storage transistors connected in series

Abstract

PURPOSE:To increase the degree of integration greatly through the series connection between memory matrix ROM part and the bit select ROM part in the same formation as the longitudinal address decoder. CONSTITUTION:Bit address decoder ROM26 and bit select ROM part 27 are formed at memory matrix ROM part 25 and word address docoder ROM11. Part 27 forms the gate circuit to select one of bit output lines B1-B5, and part 26 can control freely part 27. As a result, the memory cell within part 25 is connected in series to the transistor within part 27 featuring the same formation as the address decoder formed with the longitudinal ROM, thus increasing the degree of integration greatly.
JP13888678A 1978-11-13 1978-11-13 Logic circuit Granted JPS5477544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13888678A JPS5477544A (en) 1978-11-13 1978-11-13 Logic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13888678A JPS5477544A (en) 1978-11-13 1978-11-13 Logic circuit

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP1628075A Division JPS5713079B2 (en) 1975-02-10 1975-02-10

Publications (2)

Publication Number Publication Date
JPS5477544A true JPS5477544A (en) 1979-06-21
JPS5713954B2 JPS5713954B2 (en) 1982-03-20

Family

ID=15232407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13888678A Granted JPS5477544A (en) 1978-11-13 1978-11-13 Logic circuit

Country Status (1)

Country Link
JP (1) JPS5477544A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0338554U (en) * 1989-08-08 1991-04-15

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4917147A (en) * 1972-05-29 1974-02-15
JPS4943559A (en) * 1972-08-31 1974-04-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4917147A (en) * 1972-05-29 1974-02-15
JPS4943559A (en) * 1972-08-31 1974-04-24

Also Published As

Publication number Publication date
JPS5713954B2 (en) 1982-03-20

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