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JPS57210500A - Semiconductor storage device - Google Patents

Semiconductor storage device

Info

Publication number
JPS57210500A
JPS57210500A JP56095808A JP9580881A JPS57210500A JP S57210500 A JPS57210500 A JP S57210500A JP 56095808 A JP56095808 A JP 56095808A JP 9580881 A JP9580881 A JP 9580881A JP S57210500 A JPS57210500 A JP S57210500A
Authority
JP
Japan
Prior art keywords
stand
input
memory cell
decoder
normal
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
JP56095808A
Other languages
Japanese (ja)
Inventor
Hiroshi Shinohara
Kenji Anami
Masahiko Yoshimoto
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 JP56095808A priority Critical patent/JPS57210500A/en
Publication of JPS57210500A publication Critical patent/JPS57210500A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/70—Masking faults in memories by using spares or by reconfiguring
    • G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)

Abstract

PURPOSE:To decrease the number of fuses by connecting the input terminal of a stand-by decoder to the input of a normal selecting means, and using a logical NOR circuit whose output terminal is connected to the input of a stand-by selecting means. CONSTITUTION:A stand-by decoder 13 is composed of a logical NOR circuit which has repective input terminals connected to normal word lines 4a-4d and an output terminal connected to the input of a stand-by memory cell 9. A control signal 14 serves to hold the output of the stand-by decoder 13 at a level L upon occasion even when normal memory cell lines 6a, 6c and 6d are not selected, and is obtained from address signals other than chip selection control signals Aphi and Al. Address inputs, and normal memory cell lines 6a, 6c, and 5d, and a stand-by memory cell line 9 have one-to-one correspondence relation.
JP56095808A 1981-06-19 1981-06-19 Semiconductor storage device Pending JPS57210500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56095808A JPS57210500A (en) 1981-06-19 1981-06-19 Semiconductor storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56095808A JPS57210500A (en) 1981-06-19 1981-06-19 Semiconductor storage device

Publications (1)

Publication Number Publication Date
JPS57210500A true JPS57210500A (en) 1982-12-24

Family

ID=14147718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56095808A Pending JPS57210500A (en) 1981-06-19 1981-06-19 Semiconductor storage device

Country Status (1)

Country Link
JP (1) JPS57210500A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018899A (en) * 1983-07-13 1985-01-30 Toshiba Corp Semiconductor memory
JPS6020397A (en) * 1983-07-15 1985-02-01 Toshiba Corp Semiconductor memory
JPS6088941U (en) * 1983-11-25 1985-06-18 日本磁力選鉱株式会社 health treatment equipment
EP0215485A2 (en) * 1985-09-18 1987-03-25 Kabushiki Kaisha Toshiba Semiconductor memory device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018899A (en) * 1983-07-13 1985-01-30 Toshiba Corp Semiconductor memory
JPS6020397A (en) * 1983-07-15 1985-02-01 Toshiba Corp Semiconductor memory
JPS6088941U (en) * 1983-11-25 1985-06-18 日本磁力選鉱株式会社 health treatment equipment
EP0215485A2 (en) * 1985-09-18 1987-03-25 Kabushiki Kaisha Toshiba Semiconductor memory device

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