KR950010723B1 - 스캔패스기능이 부가된 플립플롭 - Google Patents
스캔패스기능이 부가된 플립플롭 Download PDFInfo
- Publication number
- KR950010723B1 KR950010723B1 KR1019910010433A KR910010433A KR950010723B1 KR 950010723 B1 KR950010723 B1 KR 950010723B1 KR 1019910010433 A KR1019910010433 A KR 1019910010433A KR 910010433 A KR910010433 A KR 910010433A KR 950010723 B1 KR950010723 B1 KR 950010723B1
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- South Korea
- Prior art keywords
- terminal
- signal
- mosfet
- test
- data
- Prior art date
Links
- 238000012360 testing method Methods 0.000 claims description 42
- 238000010586 diagram Methods 0.000 description 8
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/2236—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test CPU or processors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/693—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/037—Bistable circuits
- H03K3/0372—Bistable circuits of the primary-secondary type
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Quality & Reliability (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
Description
Claims (2)
- 페루프를 형성하면서 서로 입력과 출력이 접속된 조합회로의 인버터(29)와 클럭드인버터(26)로 이루어진 래치회로를 갖춘 플립플롭과, 데이터단자(D)와, 클럭신호 또는 그 반전신호(ø,/ø)단자 및 테스트인에이블신호 또는 그 반전신호단자(T,/T)에 게이트단자가 각각 접속되고, 전원단자와 상기 조합회로의 인버터의 입력단자와의 사이에 직렬로 접속되어 있는 3개의 p형 MOSFET로 이루어진 제1MOSFET(1st), 데이터단자(D)와, 클럭반전신호(/ø,ø)단자 및, 테스트인에이블반전신호 또는 테스트인에이블신호단자(/T,T)에 게이트단자가 각각 접속되고, 접지단자와 상기 조합회로의 인버터의 입력단자와의 사이에 직렬로 접속되어 있는 3개의 n형 MOSFET로 이루어진 제2MOSFET(2nd), 테스트스캔단자(S)와, 클럭신호 또는 그 반전신호(ø,/ø)단자 및, 테스트인에이블신호 또는 그 반전신호단자(T,/T)에 게이트단자가 각각 접속되고, 전원단자와 상기 조합회로의 인버터의 입력단자와의 사이에 직렬로 접속되어 있는 3개의 p형 MOSFET로 이루어진 제3MOSFET(3rd) 및, 테스트스캔단자(S)와, 클럭반전신호 또는 클럭신호(/ø,ø)단자 및, 테스트인에이블반전신호 또는 테스트인에이블신호단자(T,/T)에 게이트단자가 각각 접속되고, 접지단자와 상기 조합회로의 인버터의 입력단자와의 사이에 직렬로 접속되어 잇는 3개의 n형 MOSFET로 이루어진 제4MOSFET(4th)를 구비하고서, 상기 제1,제2,제3,제4MOSFET(1st,2nd,3rd,4th)의 채널타입과, 그들의 게이트단자, 상기 테스트인에이블단자, 클럭단자, 그들의 반전신호단자 및, 테스트스캔단자와 테이터 단자와의 접속관계가 상기 테스트인에이블신호단자가 활성화시에는 테스트스캔신호를 상기 래치회로에 출력함과 더불어, 비활성화시에는 데이터신호르 상기 래치회로에 출력하도록 된 것을 특징으로 하는 스캔패스기능이 부가된 플립플롭.
- 제 1 항에 있어서, 상기 전원단자와 상기 조합회로의 인버터의 입력단자와의 사이에 상기 제1MOSFET와 직렬로 접속되어 있는 제5MOSFET(5th)와, 상기 접지단자와 상기 조합회로의 인버터의 입력단자와의 사이에 상기 제2MOSFET와 직렬로 접속되어 있는 제6MOSFET(6th), 상기 플립플롭의 출력단자(Q)와, 클럭신호 또는 클럭반전신호(ø,/ø)단자, 테스트인에이블신호 또는 테스트인에이블반전신호단자(T,/T) 및, 데이터인에이블 또는 그 반전신호단자(/E,E)에 게이트단자가 각각 접속되고, 접원단자와 상기 조합회로의 인버터의 입력단자와의 사이에 직렬로 접속되어 있는 4개의 p형 MOSFET로 이루어진 제7MOSFET(7th) 및, 상기 플립플롭의 출력단자(Q)와, 클럭반전신호 또는 클럭신호(/ø,ø)단자, 테스트인에이블반전신호 또는 테스트인에이블신호단자(/T,T) 및, 데이터인에이블반전신호 또는 데이터인에이블신호단자(/E,E)에 게이트단자가 각각 접속되고, 접지단자와 상기 조합회로의 인버터의 입력단자와의 사이에 직렬로 접속되어 있는 4개의 n형 MOSFET로 이루어진 제8MOSFET(8th)를 구비하고서, 상기 제5,제6,제7,제8MOSFET(5th,6th,7th,8th)의 채널타입과, 그들의 게이트단자, 상기 테스트인에이블단자, 데이터인에이블단자, 클럭단자 및, 그들의 반전신호단자와 상기 플립플롭의 출력단자와의 접속관계가 상기 데이터인에이블신호단자가 비활성화시에는 데이터신호 대신에 플립플롭의 출력을 상기 래치회로에 출력하도록 된 것을 특징으로 하는 스캔패스기능이 부가된 플립플롭.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2164230A JPH0792495B2 (ja) | 1990-06-25 | 1990-06-25 | スキャンパス付きフリップフロップ |
JP02-164230 | 1990-06-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920001850A KR920001850A (ko) | 1992-01-30 |
KR950010723B1 true KR950010723B1 (ko) | 1995-09-22 |
Family
ID=15789147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910010433A KR950010723B1 (ko) | 1990-06-25 | 1991-06-24 | 스캔패스기능이 부가된 플립플롭 |
Country Status (3)
Country | Link |
---|---|
US (1) | US5173626A (ko) |
JP (1) | JPH0792495B2 (ko) |
KR (1) | KR950010723B1 (ko) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9111179D0 (en) * | 1991-05-23 | 1991-07-17 | Motorola Gmbh | An implementation of the ieee 1149.1 boundary-scan architecture |
JP3134450B2 (ja) * | 1992-02-17 | 2001-02-13 | 日本電気株式会社 | マイクロプロセッサ |
JP2985554B2 (ja) * | 1993-02-03 | 1999-12-06 | 日本電気株式会社 | 記憶回路 |
US5416362A (en) * | 1993-09-10 | 1995-05-16 | Unisys Corporation | Transparent flip-flop |
JP2882272B2 (ja) * | 1994-02-17 | 1999-04-12 | 日本電気株式会社 | ラッチ回路 |
US5510732A (en) * | 1994-08-03 | 1996-04-23 | Sun Microsystems, Inc. | Synchronizer circuit and method for reducing the occurrence of metastability conditions in digital systems |
US5469079A (en) * | 1994-09-13 | 1995-11-21 | Texas Instruments Incorporated | Flip-flop for use in LSSD gate arrays |
US5612632A (en) * | 1994-11-29 | 1997-03-18 | Texas Instruments Incorporated | High speed flip-flop for gate array |
US5663669A (en) * | 1994-12-14 | 1997-09-02 | International Business Machines Corporation | Circuitry and method for latching information |
US5654660A (en) * | 1995-09-27 | 1997-08-05 | Hewlett-Packard Company | Level shifted high impedance input multiplexor |
US5894434A (en) * | 1995-12-22 | 1999-04-13 | Texas Instruments Incorporated | MOS static memory array |
US5896046A (en) * | 1997-01-27 | 1999-04-20 | International Business Machines Corporation | Latch structure for ripple domino logic |
JP4035923B2 (ja) * | 1999-07-06 | 2008-01-23 | 富士通株式会社 | ラッチ回路 |
US6232799B1 (en) * | 1999-10-04 | 2001-05-15 | International Business Machines Corporation | Method and apparatus for selectively controlling weak feedback in regenerative pass gate logic circuits |
US6779142B1 (en) * | 2000-08-31 | 2004-08-17 | Hewlett-Packard Development Company, L.P. | Apparatus and method for interfacing a high speed scan-path with slow-speed test equipment |
FR2824683B1 (fr) | 2001-05-09 | 2003-10-24 | St Microelectronics Sa | Dispositif electronique de bascule mulitplexe |
JP2005160088A (ja) * | 2003-11-27 | 2005-06-16 | Samsung Electronics Co Ltd | パルスベースフリップフロップ |
TW200535857A (en) * | 2004-04-20 | 2005-11-01 | Innolux Display Corp | Dynamic shift register |
KR100612417B1 (ko) * | 2004-07-21 | 2006-08-16 | 삼성전자주식회사 | 펄스-기반 고속 저전력 게이티드 플롭플롭 회로 |
US7671629B2 (en) * | 2008-04-08 | 2010-03-02 | Freescale Semiconductor, Inc. | Single-supply, single-ended level conversion circuit for an integrated circuit having multiple power supply domains |
US8730404B2 (en) * | 2012-05-31 | 2014-05-20 | Silicon Laboratories Inc. | Providing a reset mechanism for a latch circuit |
TWI543535B (zh) | 2013-10-21 | 2016-07-21 | 創意電子股份有限公司 | 掃描正反器及相關方法 |
US9753086B2 (en) | 2014-10-02 | 2017-09-05 | Samsung Electronics Co., Ltd. | Scan flip-flop and scan test circuit including the same |
KR102368072B1 (ko) * | 2014-10-02 | 2022-02-28 | 삼성전자주식회사 | 스캔 플립플롭 및 상기 스캔 플립플롭을 포함하는 스캔 테스트 회로 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4495628A (en) * | 1982-06-17 | 1985-01-22 | Storage Technology Partners | CMOS LSI and VLSI chips having internal delay testing capability |
US4495629A (en) * | 1983-01-25 | 1985-01-22 | Storage Technology Partners | CMOS scannable latch |
US4540903A (en) * | 1983-10-17 | 1985-09-10 | Storage Technology Partners | Scannable asynchronous/synchronous CMOS latch |
US4806786A (en) * | 1987-11-02 | 1989-02-21 | Motorola, Inc. | Edge set/reset latch circuit having low device count |
US5015875A (en) * | 1989-12-01 | 1991-05-14 | Motorola, Inc. | Toggle-free scan flip-flop |
US5041742A (en) * | 1990-05-09 | 1991-08-20 | Motorola, Inc. | Structured scan path circuit for incorporating domino logic |
-
1990
- 1990-06-25 JP JP2164230A patent/JPH0792495B2/ja not_active Expired - Lifetime
-
1991
- 1991-06-10 US US07/712,541 patent/US5173626A/en not_active Expired - Lifetime
- 1991-06-24 KR KR1019910010433A patent/KR950010723B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US5173626A (en) | 1992-12-22 |
JPH0454471A (ja) | 1992-02-21 |
JPH0792495B2 (ja) | 1995-10-09 |
KR920001850A (ko) | 1992-01-30 |
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