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JPS55123743A - Logic integrated circuit easy to check - Google Patents

Logic integrated circuit easy to check

Info

Publication number
JPS55123743A
JPS55123743AJP3025379AJP3025379AJPS55123743AJP S55123743 AJPS55123743 AJP S55123743AJP 3025379 AJP3025379 AJP 3025379AJP 3025379 AJP3025379 AJP 3025379AJP S55123743 AJPS55123743 AJP S55123743A
Authority
JP
Japan
Prior art keywords
check
inputs
register
outputs
logic
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.)
Granted
Application number
JP3025379A
Other languages
Japanese (ja)
Other versions
JPS6153741B2 (en
Inventor
Yoshihiro Kasuya
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 LtdfiledCriticalNEC Corp
Priority to JP3025379ApriorityCriticalpatent/JPS55123743A/en
Priority to DE3009945Aprioritypatent/DE3009945C2/en
Priority to GB8008774Aprioritypatent/GB2049958B/en
Priority to FR8005815Aprioritypatent/FR2451672A1/en
Priority to US06/130,687prioritypatent/US4366393A/en
Publication of JPS55123743ApublicationCriticalpatent/JPS55123743A/en
Priority to GB08311223Aprioritypatent/GB2125170B/en
Priority to US06/545,608prioritypatent/US4536881A/en
Publication of JPS6153741B2publicationCriticalpatent/JPS6153741B2/ja
Grantedlegal-statusCriticalCurrent

Links

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Abstract

PURPOSE: To improve a check precision by providing a feedback shift register which applies respective outputs of the first to the (M-1)th FF to one inputs of the second to the M-th EXOR circuits correspondingly.
CONSTITUTION: In the regular-structure programmable logic array, EXOR circuits 311...31M use the first to the M-th logic iutput lines as one inputs respectively, and FF321...32M receive outputs of the first to the M-th EXOR circuits respectively. Feedback shift register 3 is provided where outputs of FF321...32M-1 are applied to the other inputs of circuits 312...31M correspondingly, and a check input signal sequence is applied to this register 3. The signal sequence generated on logic output lines in parallel as the result is accumulated in register 3 and is converted to a series sighal sequence and is outputted. As a resulet, logic output lines which cannot be refer to directly from the external are referred to indirectly by an observation terminal, so that the check precision can be improved.
COPYRIGHT: (C)1980,JPO&Japio
JP3025379A1979-03-151979-03-15Logic integrated circuit easy to checkGrantedJPS55123743A (en)

Priority Applications (7)

Application NumberPriority DateFiling DateTitle
JP3025379AJPS55123743A (en)1979-03-151979-03-15Logic integrated circuit easy to check
DE3009945ADE3009945C2 (en)1979-03-151980-03-14 Functionally testable integrated circuit
GB8008774AGB2049958B (en)1979-03-151980-03-14Integrated logic circuit adapted to performance tests
FR8005815AFR2451672A1 (en)1979-03-151980-03-14 INTEGRATED LOGIC CIRCUIT FOR TEST EXECUTION
US06/130,687US4366393A (en)1979-03-151980-03-17Integrated logic circuit adapted to performance tests
GB08311223AGB2125170B (en)1979-03-151983-04-25Integrated logic circuit adapted to performance tests
US06/545,608US4536881A (en)1979-03-151983-10-27Integrated logic circuit adapted to performance tests

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP3025379AJPS55123743A (en)1979-03-151979-03-15Logic integrated circuit easy to check

Publications (2)

Publication NumberPublication Date
JPS55123743Atrue JPS55123743A (en)1980-09-24
JPS6153741B2 JPS6153741B2 (en)1986-11-19

Family

ID=12298539

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP3025379AGrantedJPS55123743A (en)1979-03-151979-03-15Logic integrated circuit easy to check

Country Status (1)

CountryLink
JP (1)JPS55123743A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5988664A (en)*1982-11-081984-05-22インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨンSelf-test set
JPS5988663A (en)*1982-11-081984-05-22インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨンSelf-test method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5988664A (en)*1982-11-081984-05-22インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨンSelf-test set
JPS5988663A (en)*1982-11-081984-05-22インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨンSelf-test method

Also Published As

Publication numberPublication date
JPS6153741B2 (en)1986-11-19

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