JPS57178542A - Integrated circuit - Google Patents

Integrated circuit

Info

Publication number
JPS57178542A
JPS57178542A JP56064686A JP6468681A JPS57178542A JP S57178542 A JPS57178542 A JP S57178542A JP 56064686 A JP56064686 A JP 56064686A JP 6468681 A JP6468681 A JP 6468681A JP S57178542 A JPS57178542 A JP S57178542A
Authority
JP
Japan
Prior art keywords
signals
pin
integrated circuit
circuit
inputted
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
JP56064686A
Other languages
Japanese (ja)
Inventor
Yasuharu Tanaka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56064686A priority Critical patent/JPS57178542A/en
Publication of JPS57178542A publication Critical patent/JPS57178542A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/22Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/26Functional testing
    • G06F11/267Reconfiguring circuits for testing, e.g. LSSD, partitioning

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To increase the rate of defective detection by providing a control pin and gate circuits, and setting logical values of some or all of input and output signals in an integrated circuit to 0 or 1 fixedly. CONSTITUTION:To gate circuits 41...4n, output signals 21...2n from another circuit 2 are inputted. An integrated circuit 1 is provided with a control pin 3, and a control signal 31 inputted from the pin 3 is inputted to the circuits 41...4n in common. The circuits 41...4n ANDs the signals 21...2n, and signal 31 to send out output signals 411...4n1. Those signals are connected to the output pins 51...5n of the circuit 1. When a voltage having a level ''0'' is applied to the pin 3, voltages with the ''0'' are developed at the pins 51...5n. When a voltage having a ''1'' is applied to the pin 3, on the other hand, signals voltages of signals 21...2n of the circuit 2 are developed at the pins 51...5n. Thus, the rate of defective detection is improved.
JP56064686A 1981-04-28 1981-04-28 Integrated circuit Pending JPS57178542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56064686A JPS57178542A (en) 1981-04-28 1981-04-28 Integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56064686A JPS57178542A (en) 1981-04-28 1981-04-28 Integrated circuit

Publications (1)

Publication Number Publication Date
JPS57178542A true JPS57178542A (en) 1982-11-02

Family

ID=13265278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56064686A Pending JPS57178542A (en) 1981-04-28 1981-04-28 Integrated circuit

Country Status (1)

Country Link
JP (1) JPS57178542A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897843A (en) * 1981-12-08 1983-06-10 Hitachi Ltd Integrated circuit
JPS6034027A (en) * 1983-08-04 1985-02-21 Nec Corp Semiconductor device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897843A (en) * 1981-12-08 1983-06-10 Hitachi Ltd Integrated circuit
JPH0221146B2 (en) * 1981-12-08 1990-05-11 Hitachi Ltd
JPS6034027A (en) * 1983-08-04 1985-02-21 Nec Corp Semiconductor device

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