KR20080076918A - 타겟 재지정 메모리 셀 중복성을 갖는 메모리 - Google Patents
타겟 재지정 메모리 셀 중복성을 갖는 메모리 Download PDFInfo
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- KR20080076918A KR20080076918A KR1020087013050A KR20087013050A KR20080076918A KR 20080076918 A KR20080076918 A KR 20080076918A KR 1020087013050 A KR1020087013050 A KR 1020087013050A KR 20087013050 A KR20087013050 A KR 20087013050A KR 20080076918 A KR20080076918 A KR 20080076918A
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices
- G11C29/80—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout
- G11C29/81—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout using a hierarchical redundancy scheme
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/04—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS
- G11C16/0483—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells having several storage transistors connected in series
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/10—Programming or data input circuits
- G11C16/14—Circuits for erasing electrically, e.g. erase voltage switching circuits
- G11C16/16—Circuits for erasing electrically, e.g. erase voltage switching circuits for erasing blocks, e.g. arrays, words, groups
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices
- G11C29/785—Masking faults in memories by using spares or by reconfiguring using programmable devices with redundancy programming schemes
- G11C29/787—Masking faults in memories by using spares or by reconfiguring using programmable devices with redundancy programming schemes using a fuse hierarchy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices
- G11C29/80—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout
- G11C29/808—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout using a flexible replacement scheme
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2229/00—Indexing scheme relating to checking stores for correct operation, subsequent repair or testing stores during standby or offline operation
- G11C2229/70—Indexing scheme relating to G11C29/70, for implementation aspects of redundancy repair
- G11C2229/76—Storage technology used for the repair
- G11C2229/763—E-fuses, e.g. electric fuses or antifuses, floating gate transistors
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices
- G11C29/80—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout
- G11C29/816—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout for an application-specific layout
- G11C29/82—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout for an application-specific layout for EEPROMs
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- For Increasing The Reliability Of Semiconductor Memories (AREA)
- Read Only Memory (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
Description
Claims (23)
- 비휘발성 메모리 어레이에 있어서,결함이 있는 셀 및 결함이 없는 셀들을 포함하는 메모리 셀들의 제1 행;상기 메모리 어레이에서 다른 곳으로부터 재배치된 데이터만을 포함하는 중복된 행인 메모리 셀들의 제2 행; 을 포함하며상기 결함이 있는 셀이 상기 제2 행의 중복된 셀에 개별적으로 맵핑되어 상기 결함이 있는 셀에 저장될 데이터가 상기 중복된 셀, 상기 결함이 있는 셀 및 동일한 열의 상기 중복된 셀에 저장되는데, 상기 제2 행은 상기 제1 행의 결함이 없는 셀들로부터 맵핑된 데이터를 포함하지 않는, 비휘발성 메모리 어레이.
- 제 1항에 있어서, 결함이 있다고 여겨지며 데이터를 저장하지 않는 제3 행을 더 포함하며, 상기 제3 행에 대한 모든 데이터는 중복된 행인 제4 행에 저장되는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 2항에 있어서, 상기 제3 행은 임계수를 초과하는 다수의 결함이 있는 셀들을 갖기 때문에 결함이 있다고 여겨지는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 1항에 있어서, 상기 결함이 있는 셀 및 상기 중복된 셀은 동일한 블록에 있으며 개별적으로 삭제가능하지 않은 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 4항에 있어서, 상기 결함이 있는 셀을 상기 중복된 셀로 맵핑하는 것은 상기 메모리 어레이의 다른 블록에 기록되는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 1항에 있어서, 상기 제2 행은 상기 제1 행과 다른 행들에서 결함이 있는 셀들로부터 맵핑된 부가적인 데이터를 포함하는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 1항에 있어서, 상기 결함이 있는 셀을 상기 중복된 셀로 맵핑하는 것이 상기 비휘발성 메모리 어레이 외부에 기록되는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 1항에 있어서, 상기 결함이 있는 셀을 상기 중복된 셀로 맵핑하는 것은 퓨즈 또는 안티퓨즈를 사용하여 영구적으로 기록되는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 1항에 있어서, 상기 메모리 어레이가 NAND 구조를 갖는 것을 특징으로 하 는 비휘발성 메모리 어레이.
- 제 1항에 있어서, 상기 제1 또는 제2 행의 개별적인 셀이 2비트 이상의 데이터를 포함하는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 1항에 있어서, 상기 결함이 있는 셀로 액세스가 시도될 때, 상기 중복된 셀이 대신 액세스되는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 11항에 있어서, 상기 결함이 있는 셀로의 액세스가 시도될 때, 상기 결함이 있는 셀의 열 및 행 둘 다는 상기 결함이 있는 셀이 결함이 있다는 것을 결정하기 위해 결함 맵에 비교되는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 12항에 있어서, 상기 열 및 행은 상기 메모리 어레이에 연결된 전용 상태 머신에 의해 상기 결함 맵과 비교되는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 제 12항에 있어서, 상기 열 및 행은 다른 메모리 관리 기능들을 또한 수행하는 제어기에 의해 상기 결함 맵과 비교되는 것을 특징으로 하는 비휘발성 메모리 어레이.
- 새로운 메모리 칩을 위한 개시 절차 동안 중복된 셀들의 하나 이상의 중복된 행들 및 하나 이상의 결함이 있는 셀들을 갖는 비휘발성 메모리 어레이를 테스트하여 정정하는 방법에 있어서,상기 메모리 어레이에서 하나 이상의 결함이 있는 셀을 검출하는 단계; 및결함이 없는 제1 행의 셀들에 상기 중복된 행의 임의의 다른 교체 셀들을 할당하지 않고, 상기 제1 행의 결함이 있는 셀을 교체하기 위해서 상기 중복된 행의 교체 셀을 개별적으로 할당하는 단계를 포함하는데, 상기 결함이 있는 셀 및 상기 교체 셀은 워드 라인에 의해 연결되는, 방법.
- 제 15항에 있어서, 제2 행의 결함이 있는 셀들의 수를 임계수와 비교하고 상기 제2 행을 교체하기 위해 전체 부가적인 중복된 행을 할당함으로써 상기 제2 행이 결함이 있다는 것을 결정하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 15항에 있어서, 퓨즈 또는 안티퓨즈의 영구적인 변화를 야기함으로써 상기 교체 셀의 할당을 기록하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 15항에 있어서, 비휘발성 메모리에서 상기 교체 셀의 할당을 기록하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- NAND 셀들의 스트링이 두 개의 선택 게이트들 사이에 직렬로 연결되는, 비휘 발성 NAND 유형 플래시 메모리 어레이에서 메모리 셀들의 스트링을 교체하는 방법에 있어서,제1 행의 메모리 셀들의 제1 스트링이 결함이 있는 스트링이라는 것을 결정하는 단계; 및상기 제1 행의 다른 스트링들을 중복된 행으로 맵핑하지 않고 상기 메모리 셀들의 제1 스트링들을 상기 중복된 행의 메모리 셀들의 제2 스트링으로 맵핑하는 단계를 포함하는, 방법.
- 제 19항에 있어서, 상기 메모리 셀들의 제1 스트링은 적어도 하나의 결함이 있는 셀을 포함하기 때문에 결함이 있는 스트링이라 결정되는 것을 특징으로 하는 는 방법.
- 제 19항에 있어서, 상기 메모리 셀들의 제1 스트링은 결함이 있는 셀들만을 포함하기 때문에 결함이 있는 스트링이라 결정되는 것을 특징으로 하는 방법.
- 제 19항에 있어서, 상기 제1 스트링 및 상기 제2 스트링은 둘 다 동일한 블록에 있는 것을 특징으로 하는 방법.
- 제 19항에 있어서, 상기 제1 스트링 및 상기 제2 스트링이 공통 워드 라인들을 공유하는 것을 특징으로 하는 방법.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US11/270,410 | 2005-11-08 | ||
US11/270,198 | 2005-11-08 | ||
US11/270,198 US7379330B2 (en) | 2005-11-08 | 2005-11-08 | Retargetable memory cell redundancy methods |
US11/270,410 US7447066B2 (en) | 2005-11-08 | 2005-11-08 | Memory with retargetable memory cell redundancy |
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KR20080076918A true KR20080076918A (ko) | 2008-08-20 |
KR101021165B1 KR101021165B1 (ko) | 2011-03-15 |
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KR1020087013050A KR101021165B1 (ko) | 2005-11-08 | 2006-11-01 | 타겟 재지정 메모리 셀 중복성을 갖는 메모리 |
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US (2) | US7379330B2 (ko) |
EP (1) | EP1946326A1 (ko) |
JP (1) | JP5297195B2 (ko) |
KR (1) | KR101021165B1 (ko) |
TW (1) | TWI354992B (ko) |
WO (1) | WO2007056651A1 (ko) |
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KR100530930B1 (ko) * | 2004-05-11 | 2005-11-23 | 주식회사 하이닉스반도체 | 낸드 플래시 메모리 장치의 멀티-i/o 리페어 방법 및그의 낸드 플래시 메모리 장치 |
JP4102338B2 (ja) * | 2004-07-20 | 2008-06-18 | 株式会社東芝 | 半導体記憶装置 |
US7116590B2 (en) * | 2004-08-23 | 2006-10-03 | Micron Technology, Inc. | Memory address repair without enable fuses |
US7379330B2 (en) | 2005-11-08 | 2008-05-27 | Sandisk Corporation | Retargetable memory cell redundancy methods |
-
2005
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- 2005-11-08 US US11/270,410 patent/US7447066B2/en active Active
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2006
- 2006-11-01 KR KR1020087013050A patent/KR101021165B1/ko active IP Right Grant
- 2006-11-01 EP EP06839668A patent/EP1946326A1/en not_active Withdrawn
- 2006-11-01 JP JP2008540301A patent/JP5297195B2/ja active Active
- 2006-11-01 WO PCT/US2006/060453 patent/WO2007056651A1/en active Application Filing
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101716865B1 (ko) * | 2016-04-29 | 2017-03-15 | 고려대학교 산학협력단 | 주 메모리의 에러 셀 회피를 위한 스택 및 힙 메모리 관리 장치 및 그 방법 |
WO2017188620A1 (ko) * | 2016-04-29 | 2017-11-02 | 고려대학교 산학협력단 | 주 메모리의 에러 셀 회피를 위한 가상 메모리 관리 장치 및 그 방법 |
Also Published As
Publication number | Publication date |
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TW200733115A (en) | 2007-09-01 |
JP5297195B2 (ja) | 2013-09-25 |
WO2007056651A1 (en) | 2007-05-18 |
KR101021165B1 (ko) | 2011-03-15 |
EP1946326A1 (en) | 2008-07-23 |
JP2009515289A (ja) | 2009-04-09 |
TWI354992B (en) | 2011-12-21 |
US7447066B2 (en) | 2008-11-04 |
US20070103978A1 (en) | 2007-05-10 |
US20070103977A1 (en) | 2007-05-10 |
US7379330B2 (en) | 2008-05-27 |
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