JPS55123743A - Logic integrated circuit easy to check - Google Patents
Logic integrated circuit easy to checkInfo
- Publication number
- JPS55123743A JPS55123743A JP3025379A JP3025379A JPS55123743A JP S55123743 A JPS55123743 A JP S55123743A JP 3025379 A JP3025379 A JP 3025379A JP 3025379 A JP3025379 A JP 3025379A JP S55123743 A JPS55123743 A JP 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
Links
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
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3025379A JPS55123743A (en) | 1979-03-15 | 1979-03-15 | Logic integrated circuit easy to check |
| DE19803009945 DE3009945A1 (en) | 1979-03-15 | 1980-03-14 | INTEGRATED, LOGICAL CIRCUIT WITH FUNCTIONAL TEST |
| FR8005815A FR2451672A1 (en) | 1979-03-15 | 1980-03-14 | INTEGRATED LOGIC CIRCUIT FOR TEST EXECUTION |
| GB8008774A GB2049958B (en) | 1979-03-15 | 1980-03-14 | Integrated logic circuit adapted to performance tests |
| US06/130,687 US4366393A (en) | 1979-03-15 | 1980-03-17 | Integrated logic circuit adapted to performance tests |
| GB08311223A GB2125170B (en) | 1979-03-15 | 1983-04-25 | Integrated logic circuit adapted to performance tests |
| US06/545,608 US4536881A (en) | 1979-03-15 | 1983-10-27 | Integrated logic circuit adapted to performance tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3025379A JPS55123743A (en) | 1979-03-15 | 1979-03-15 | Logic integrated circuit easy to check |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55123743A true JPS55123743A (en) | 1980-09-24 |
| JPS6153741B2 JPS6153741B2 (en) | 1986-11-19 |
Family
ID=12298539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3025379A Granted JPS55123743A (en) | 1979-03-15 | 1979-03-15 | Logic integrated circuit easy to check |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55123743A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5988663A (en) * | 1982-11-08 | 1984-05-22 | 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 |
| JPS5988664A (en) * | 1982-11-08 | 1984-05-22 | 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 |
-
1979
- 1979-03-15 JP JP3025379A patent/JPS55123743A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5988663A (en) * | 1982-11-08 | 1984-05-22 | 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 |
| JPS5988664A (en) * | 1982-11-08 | 1984-05-22 | 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 |
| JPH0150873B2 (en) * | 1982-11-08 | 1989-10-31 | Intaanashonaru Bijinesu Mashiinzu Corp | |
| JPH0150874B2 (en) * | 1982-11-08 | 1989-10-31 | Intaanashonaru Bijinesu Mashiinzu Corp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6153741B2 (en) | 1986-11-19 |
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