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JPS5537634A - Integrated-circuit device - Google Patents

Integrated-circuit device

Info

Publication number
JPS5537634A
JPS5537634A JP11011878A JP11011878A JPS5537634A JP S5537634 A JPS5537634 A JP S5537634A JP 11011878 A JP11011878 A JP 11011878A JP 11011878 A JP11011878 A JP 11011878A JP S5537634 A JPS5537634 A JP S5537634A
Authority
JP
Japan
Prior art keywords
circuit
test
line
code
rom1
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
JP11011878A
Other languages
Japanese (ja)
Inventor
Tomoji Nukiyama
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 JP11011878A priority Critical patent/JPS5537634A/en
Publication of JPS5537634A publication Critical patent/JPS5537634A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)

Abstract

PURPOSE: To make it possible to check easily a process control code by building a memory part and a method of checking its contents on the same chip and by allowing the memory part to have the process control code and a test code, which are combined.
CONSTITUTION: Integrated-circuit device 8 consists of incorporated ROM1, detection circuit 2, holding circuit 3 set by a detection signal, terminal 4 which transfers an output signal from circuit 3, test circuit 5 which controls a test function, and control gates 6 and 7. For example, level "1" is written to a test code as to a line where there are odd-numbered levels "1" in bits constituting an instruction set to each line of ROM1, so that every line will have even-numbered levels "1" set without fail. By a test instruction from circuit 5, code data is read out to circuit 2 at every line of ROM1 and through a comparsion, it is decided whether the number of levels "1" is odd or even; when it is odd, an error in memory data is detected and a detection signal is outputted to circuit 3, thereby outputting a signal indicating the existence of the error to terminal 4 for a constant period.
COPYRIGHT: (C)1980,JPO&Japio
JP11011878A 1978-09-06 1978-09-06 Integrated-circuit device Pending JPS5537634A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11011878A JPS5537634A (en) 1978-09-06 1978-09-06 Integrated-circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11011878A JPS5537634A (en) 1978-09-06 1978-09-06 Integrated-circuit device

Publications (1)

Publication Number Publication Date
JPS5537634A true JPS5537634A (en) 1980-03-15

Family

ID=14527485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11011878A Pending JPS5537634A (en) 1978-09-06 1978-09-06 Integrated-circuit device

Country Status (1)

Country Link
JP (1) JPS5537634A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57207347A (en) * 1981-06-16 1982-12-20 Mitsubishi Electric Corp Semiconductor device
JPS60193056A (en) * 1984-03-14 1985-10-01 Nec Corp Single chip microcomputer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57207347A (en) * 1981-06-16 1982-12-20 Mitsubishi Electric Corp Semiconductor device
JPS60193056A (en) * 1984-03-14 1985-10-01 Nec Corp Single chip microcomputer

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