JPS56107400A - Memory test device - Google Patents

Memory test device

Info

Publication number
JPS56107400A
JPS56107400A JP1079680A JP1079680A JPS56107400A JP S56107400 A JPS56107400 A JP S56107400A JP 1079680 A JP1079680 A JP 1079680A JP 1079680 A JP1079680 A JP 1079680A JP S56107400 A JPS56107400 A JP S56107400A
Authority
JP
Japan
Prior art keywords
memory
address
information
block
defective
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
JP1079680A
Other languages
Japanese (ja)
Inventor
Kenichi Mitsuoka
Akio Nieta
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.)
Advantest Corp
Original Assignee
Advantest Corp
Takeda Riken Industries 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 Advantest Corp, Takeda Riken Industries Co Ltd filed Critical Advantest Corp
Priority to JP1079680A priority Critical patent/JPS56107400A/en
Publication of JPS56107400A publication Critical patent/JPS56107400A/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
    • G11C29/56—External testing equipment for static stores, e.g. automatic test equipment [ATE]; Interfaces therefor

Landscapes

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

Abstract

PURPOSE:To reduce the defective analysis time, by referencing only the memory content of failed memory corresponding to the defect generating blocks, through the concentrated storage of inblock defective at the auxiliary memory, by blocking the memory address to be tested. CONSTITUTION:The memory to be tested 2 is accessed via the address generator 1, the readout information is compared at a theoretical comparator 4 fed with expected pattern, voltage comparator 3, and defective information is written in the failed memory 5. On the other hand, the address information from the delay circuit 6 is block-divided at the blocking circuit 10, and the defect in the address block generated with defects is concentratedly stored in the auxiliary memory 9. Thus, when the information of the memory 9 is read out, whether or not the presence of defects in the address block is discriminated, and when the memory content of the memory 5 corresponding to this block is read out, defect analysis can be made in a short time without reading out all the memory content of the memory 5.
JP1079680A 1980-01-30 1980-01-30 Memory test device Pending JPS56107400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1079680A JPS56107400A (en) 1980-01-30 1980-01-30 Memory test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1079680A JPS56107400A (en) 1980-01-30 1980-01-30 Memory test device

Publications (1)

Publication Number Publication Date
JPS56107400A true JPS56107400A (en) 1981-08-26

Family

ID=11760300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1079680A Pending JPS56107400A (en) 1980-01-30 1980-01-30 Memory test device

Country Status (1)

Country Link
JP (1) JPS56107400A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267976A (en) * 1988-09-02 1990-03-07 Advantest Corp Memory testing apparatus
JP2008186579A (en) * 2008-03-24 2008-08-14 Advantest Corp Memory-testing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267976A (en) * 1988-09-02 1990-03-07 Advantest Corp Memory testing apparatus
JP2008186579A (en) * 2008-03-24 2008-08-14 Advantest Corp Memory-testing device
JP4691125B2 (en) * 2008-03-24 2011-06-01 株式会社アドバンテスト Memory test equipment

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