KR100527402B1 - 디디알 동기식메모리의 지연고정루프 장치 - Google Patents
디디알 동기식메모리의 지연고정루프 장치 Download PDFInfo
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- KR100527402B1 KR100527402B1 KR10-2000-0029691A KR20000029691A KR100527402B1 KR 100527402 B1 KR100527402 B1 KR 100527402B1 KR 20000029691 A KR20000029691 A KR 20000029691A KR 100527402 B1 KR100527402 B1 KR 100527402B1
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- South Korea
- Prior art keywords
- output
- delay
- receiving
- delay line
- clock
- Prior art date
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- Expired - Fee Related
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- 239000000872 buffer Substances 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 230000005855 radiation Effects 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 11
- 239000004065 semiconductor Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 abstract description 9
- 230000001360 synchronised effect Effects 0.000 description 20
- 238000010586 diagram Methods 0.000 description 18
- 230000003139 buffering effect Effects 0.000 description 6
- 230000003111 delayed effect Effects 0.000 description 5
- 230000001934 delay Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C8/00—Arrangements for selecting an address in a digital store
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1051—Data output circuits, e.g. read-out amplifiers, data output buffers, data output registers, data output level conversion circuits
- G11C7/1066—Output synchronization
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
- G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
- G11C11/4063—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing
- G11C11/407—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing for memory cells of the field-effect type
- G11C11/4076—Timing circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1072—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers for memories with random access ports synchronised on clock signal pulse trains, e.g. synchronous memories, self timed memories
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management
- G11C7/222—Clock generating, synchronizing or distributing circuits within memory device
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Dram (AREA)
Abstract
Description
Claims (7)
- 반도체 메모리 장치의 지연고정루프에 있어서,클럭을 양(+)입력으로 입력받고 반전된 클럭(CLKB)을 음(-) 입력으로 입력받아 버퍼링하는 제1차동증폭기;클럭을 음(-)입력으로 입력받고 반전된 클럭(CLKB)을 양(+) 입력으로 입력받아 버퍼링하는 제2차동증폭기;상기 제1 및 제2 차동증폭기의 출력을 입력받아 보상하고자하는 스큐만큼 시간 지연을 시키기 위한 딜레이부;상기 딜레이부의 출력을 입력받아 제1방향으로 시간 지연을 조절하기 위한 측정 딜레이 라인;상기 측정 딜레이 라인과 상기 제1차동증폭기의 출력을 입력받아 시간지연이 조절된 딜레이만큼 클록이 입력되도록 하기 위한 위상 비교기;상기 위상 비교기의 출력과 상기 제1차동증폭기의 출력을 입력받아서 제2방향으로 시간 지연을 조절하기 위한 변이 딜레이 라인;상기 변이 딜레이 라인으로부터의 출력과 상기 제2차동증폭기의 출력을 입력받아서 상기 측정 딜레이 라인과 같은 딜레이만큼 지연하기 위한 복사 딜레이 라인;상기 변이 딜레이 라인과 복사 딜레이 라인으로부터 출력을 입력받아 지연고정루프 클록신호를 출력하기 위한 출력버퍼를 포함하여 이루어진 지연고정루프.
- 제 1 항에 있어서,상기 측정 딜레이 라인은,상기 딜레이부의 출력과 전원전압을 입력받는 제1난드게이트와,상기 제1난드게이트의 출력을 입력받는 제1 인버터를 첫번째 단으로 구비하는 것을 특징으로 하는 지연고정루프.
- 제 2 항에 있어서,상기 측정 딜레이 라인은,상기 제1 인버터의 출력과 전원전압을 입력받는 제2난드게이트와,상기 제2난드게이트의 출력을 입력받는 제2 인버터를 두번째 단으로 구비하는 것을 특징으로 하는 지연고정루프.
- 제 3 항에 있어서,상기 위상비교기는,상기 제1난드게이트의 출력과 상기 제1차동증폭기의 출력을 입력받는 D-플립플롭과,상기 D-플립플롭의 출력과 다음단의 D-플립플롭의 반전된 출력을 입력받는 제3난드게이트를 첫번째 단으로 구비하는 것을 특징으로 하는 지연고정루프.
- 제 4 항에 있어서,상기 측정 딜레이 라인은,상기 제2 인버터의 출력과 상기 제3난드게이트의 출력을 입력받는 제4난드게이트와,상기 제4난드게이트의 출력을 입력받는 제3 인버터를 세번째 단으로 구비하는 것을 특징으로 하는 지연고정루프.
- 제 5 항에 있어서,상기 변이 딜레이 라인은,상기 제3난드게이트의 출력과 상기 제1차동증폭기의 출력을 입력받는 제1노아게이트와,상기 제1노아게이트의 출력을 입력받는 제4 인버터와,상기 제4 인버터의 출력과 다음단으로부터의 변이 딜레이 라인의 출력을 입력받는 제5난드게이트와,상기 제5난드게이트의 출력을 입력받는 제5 인버터를 첫번째 단으로 구비하는 것을 특징으로 하는 지연고정루프.
- 제 6 항에 있어서,상기 복사 딜레이 라인은,상기 제2차동증폭기의 출력과 상기 제3난드게이트의 출력을 입력받는 제2노아게이트와,상기 제2노아게이트의 출력을 입력받는 제6 인버터와,상기 제6 인버터의 출력과 다음단의 복사 딜레이 라인의 출력을 입력받는 제6난드게이트와,상기 제6난드게이트의 출력을 입력받는 인버터를 첫번째 단으로 구비하는 것을 특징으로 하는 지연고정루프.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2000-0029691A KR100527402B1 (ko) | 2000-05-31 | 2000-05-31 | 디디알 동기식메모리의 지연고정루프 장치 |
US09/867,812 US6396322B1 (en) | 2000-05-31 | 2001-05-30 | Delay locked loop of a DDR SDRAM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2000-0029691A KR100527402B1 (ko) | 2000-05-31 | 2000-05-31 | 디디알 동기식메모리의 지연고정루프 장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20010108782A KR20010108782A (ko) | 2001-12-08 |
KR100527402B1 true KR100527402B1 (ko) | 2005-11-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR10-2000-0029691A Expired - Fee Related KR100527402B1 (ko) | 2000-05-31 | 2000-05-31 | 디디알 동기식메모리의 지연고정루프 장치 |
Country Status (2)
Country | Link |
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US (1) | US6396322B1 (ko) |
KR (1) | KR100527402B1 (ko) |
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2000
- 2000-05-31 KR KR10-2000-0029691A patent/KR100527402B1/ko not_active Expired - Fee Related
-
2001
- 2001-05-30 US US09/867,812 patent/US6396322B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR20010108782A (ko) | 2001-12-08 |
US20020031042A1 (en) | 2002-03-14 |
US6396322B1 (en) | 2002-05-28 |
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