JPS56111191A - Read only memory device - Google Patents

Read only memory device

Info

Publication number
JPS56111191A
JPS56111191A JP1315380A JP1315380A JPS56111191A JP S56111191 A JPS56111191 A JP S56111191A JP 1315380 A JP1315380 A JP 1315380A JP 1315380 A JP1315380 A JP 1315380A JP S56111191 A JPS56111191 A JP S56111191A
Authority
JP
Japan
Prior art keywords
mosfets
fets
lines
bit
current
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.)
Pending
Application number
JP1315380A
Other languages
Japanese (ja)
Inventor
Takashi Osone
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1315380A priority Critical patent/JPS56111191A/en
Publication of JPS56111191A publication Critical patent/JPS56111191A/en
Pending 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)

Abstract

PURPOSE:To reduce the power consumption, by connecting the specific line of bit lines of ROM reading out the information by the presence of MOSFETs in matrix arragement to load elements. CONSTITUTION:MOSFETs 23-25 of an ROM22 are connected to bit lines 26', 26... 26'', and the gate is controlled with the Y decoder outputs 1.... Load FETs 20, 21 fed with the chip selection signal CS are connected to the lines 26', 26'', and a switching MOSFET40 to ground is connected via MOSFETs 29, 32 in X selection MOSFETs 27-33. For example, when the output 1, X selection signal Ao, and anti-A1' and A2' are selected to a high level, a current flows from an FET20 via FETs 27 of ON-state, lines 26', 26'', are respectively at low and high level, and the bit content of an ROM23 is read in via the NAND gate 34, and the total consumption current is 2.5 times the current fed to FETs 20 and 21, thus the power consumption can be decreased in comparison with 7.5 times in case of the provision of load elements every bit-line.
JP1315380A 1980-02-05 1980-02-05 Read only memory device Pending JPS56111191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1315380A JPS56111191A (en) 1980-02-05 1980-02-05 Read only memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1315380A JPS56111191A (en) 1980-02-05 1980-02-05 Read only memory device

Publications (1)

Publication Number Publication Date
JPS56111191A true JPS56111191A (en) 1981-09-02

Family

ID=11825213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1315380A Pending JPS56111191A (en) 1980-02-05 1980-02-05 Read only memory device

Country Status (1)

Country Link
JP (1) JPS56111191A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214499A (en) * 1984-04-10 1985-10-26 Matsushita Electric Ind Co Ltd semiconductor equipment
EP0763830A3 (en) * 1995-09-13 1998-10-21 Siemens Aktiengesellschaft Arrangement of memory cells in matrix form

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214499A (en) * 1984-04-10 1985-10-26 Matsushita Electric Ind Co Ltd semiconductor equipment
EP0763830A3 (en) * 1995-09-13 1998-10-21 Siemens Aktiengesellschaft Arrangement of memory cells in matrix form

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