DE602006012170D1 - Löschen eines nichtflüchtigen speichers unter verwendung veränderlicher wortleitungsbedingungen zum ausgleichen langsamer schreibender speicherzellen - Google Patents

Löschen eines nichtflüchtigen speichers unter verwendung veränderlicher wortleitungsbedingungen zum ausgleichen langsamer schreibender speicherzellen

Info

Publication number
DE602006012170D1
DE602006012170D1 DE602006012170T DE602006012170T DE602006012170D1 DE 602006012170 D1 DE602006012170 D1 DE 602006012170D1 DE 602006012170 T DE602006012170 T DE 602006012170T DE 602006012170 T DE602006012170 T DE 602006012170T DE 602006012170 D1 DE602006012170 D1 DE 602006012170D1
Authority
DE
Germany
Prior art keywords
memory cells
erase
cells
word lines
compensate
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.)
Active
Application number
DE602006012170T
Other languages
English (en)
Inventor
Masaaki Higashitani
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.)
SanDisk Corp
Original Assignee
SanDisk Corp
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
Priority claimed from US11/296,032 external-priority patent/US7403428B2/en
Application filed by SanDisk Corp filed Critical SanDisk Corp
Publication of DE602006012170D1 publication Critical patent/DE602006012170D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
    • G11C16/3436—Arrangements for verifying correct programming or erasure
    • G11C16/344—Arrangements for verifying correct erasure or for detecting overerased cells
    • G11C16/3445—Circuits or methods to verify correct erasure of nonvolatile memory cells
    • 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
    • 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
    • G11C11/56—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
    • G11C11/5621—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency using charge storage in a floating gate
    • G11C11/5628—Programming or writing circuits; Data input circuits
    • 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
    • G11C11/56—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
    • G11C11/5621—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency using charge storage in a floating gate
    • G11C11/5628—Programming or writing circuits; Data input circuits
    • G11C11/5635—Erasing circuits
    • 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
    • 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
    • G11C16/08—Address circuits; Decoders; Word-line control circuits
    • 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
    • G11C16/12—Programming voltage switching circuits
    • 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
    • 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
    • G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
    • G11C16/3404—Convergence or correction of memory cell threshold voltages; Repair or recovery of overerased or overprogrammed cells
    • 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
    • G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
    • G11C16/3404—Convergence or correction of memory cell threshold voltages; Repair or recovery of overerased or overprogrammed cells
    • G11C16/3409—Circuits or methods to recover overerased nonvolatile memory cells detected during erase verification, usually by means of a "soft" programming step
    • 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
    • G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
    • G11C16/3436—Arrangements for verifying correct programming or erasure
    • G11C16/344—Arrangements for verifying correct erasure or for detecting overerased cells
    • G11C16/345—Circuits or methods to detect overerased nonvolatile memory cells, usually during erasure verification
    • 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
    • G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
    • G11C16/3436—Arrangements for verifying correct programming or erasure
    • G11C16/3454—Arrangements for verifying correct programming or for detecting overprogrammed cells
    • 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
    • G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
    • G11C16/3436—Arrangements for verifying correct programming or erasure
    • G11C16/3468—Prevention of overerasure or overprogramming, e.g. by verifying whilst erasing or writing
    • 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
    • G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
    • G11C16/3436—Arrangements for verifying correct programming or erasure
    • G11C16/3468—Prevention of overerasure or overprogramming, e.g. by verifying whilst erasing or writing
    • G11C16/3472—Circuits or methods to verify correct erasure of nonvolatile memory cells whilst erasing is in progress, e.g. by detecting onset or cessation of current flow in cells and using the detector output to terminate erasure
    • 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
    • G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
    • G11C16/3436—Arrangements for verifying correct programming or erasure
    • G11C16/3468—Prevention of overerasure or overprogramming, e.g. by verifying whilst erasing or writing
    • G11C16/3477—Circuits or methods to prevent overerasing of nonvolatile memory cells, e.g. by detecting onset or cessation of current flow in cells and using the detector output to terminate erasing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C8/00—Arrangements for selecting an address in a digital store
    • G11C8/08—Word line control circuits, e.g. drivers, boosters, pull-up circuits, pull-down circuits, precharging circuits, for word lines
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C2211/00—Indexing scheme relating to digital stores characterized by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C2211/56—Indexing scheme relating to G11C11/56 and sub-groups for features not covered by these groups
    • G11C2211/562—Multilevel memory programming aspects
    • G11C2211/5621—Multilevel programming verification
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C2216/00—Indexing scheme relating to G11C16/00 and subgroups, for features not directly covered by these groups
    • G11C2216/12—Reading and writing aspects of erasable programmable read-only memories
    • G11C2216/18—Flash erasure of all the cells in an array, sector or block simultaneously

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Read Only Memory (AREA)
  • Semiconductor Memories (AREA)
  • Non-Volatile Memory (AREA)
DE602006012170T 2005-03-31 2006-03-29 Löschen eines nichtflüchtigen speichers unter verwendung veränderlicher wortleitungsbedingungen zum ausgleichen langsamer schreibender speicherzellen Active DE602006012170D1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US66704305P 2005-03-31 2005-03-31
US11/296,032 US7403428B2 (en) 2005-03-31 2005-12-06 Systems for erasing non-volatile memory utilizing changing word line conditions to compensate for slower erasing memory cells
US11/295,755 US7430138B2 (en) 2005-03-31 2005-12-06 Erasing non-volatile memory utilizing changing word line conditions to compensate for slower erasing memory cells
PCT/US2006/011651 WO2006124122A2 (en) 2005-03-31 2006-03-29 Erasing non-volatile memory utilizing changing word line conditions to compensate for slower frasing memory cells

Publications (1)

Publication Number Publication Date
DE602006012170D1 true DE602006012170D1 (de) 2010-03-25

Family

ID=37074447

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602006012170T Active DE602006012170D1 (de) 2005-03-31 2006-03-29 Löschen eines nichtflüchtigen speichers unter verwendung veränderlicher wortleitungsbedingungen zum ausgleichen langsamer schreibender speicherzellen

Country Status (8)

Country Link
EP (1) EP1864292B1 (de)
JP (1) JP4762305B2 (de)
KR (1) KR100909720B1 (de)
CN (1) CN101199024B (de)
AT (1) ATE457518T1 (de)
DE (1) DE602006012170D1 (de)
TW (1) TWI319878B (de)
WO (1) WO2006124122A2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101062032B1 (ko) 2006-10-13 2011-09-05 샌디스크 코포레이션 비휘발성 메모리에서의 분할된 소거 및 소거 검증
US7639540B2 (en) 2007-02-16 2009-12-29 Mosaid Technologies Incorporated Non-volatile semiconductor memory having multiple external power supplies
KR100960479B1 (ko) * 2007-12-24 2010-06-01 주식회사 하이닉스반도체 플래시 메모리 장치 및 동작 방법
JP4975794B2 (ja) 2009-09-16 2012-07-11 株式会社東芝 不揮発性半導体記憶装置
KR101972167B1 (ko) * 2012-05-29 2019-04-24 에스케이하이닉스 주식회사 반도체 메모리 장치 및 그것의 동작 방법
KR102218735B1 (ko) 2014-01-21 2021-02-23 삼성전자주식회사 불휘발성 메모리 장치를 포함하는 메모리 시스템 및 그것의 소거 방법
US9652381B2 (en) * 2014-06-19 2017-05-16 Sandisk Technologies Llc Sub-block garbage collection
JP5952366B2 (ja) 2014-10-02 2016-07-13 ウィンボンド エレクトロニクス コーポレーション 高信頼性不揮発性半導体メモリ
JP5883494B1 (ja) * 2014-11-19 2016-03-15 ウィンボンド エレクトロニクス コーポレーション 不揮発性半導体記憶装置
KR102347182B1 (ko) 2015-09-04 2022-01-04 삼성전자주식회사 메모리 장치, 메모리 시스템, 상기 메모리 장치의 동작 방법 및 상기 메모리 시스템의 동작 방법
CN105976867A (zh) * 2016-07-06 2016-09-28 北京兆易创新科技股份有限公司 一种存储单元的擦除方法
KR102545044B1 (ko) * 2018-06-01 2023-06-19 삼성전자주식회사 비휘발성 메모리 장치의 데이터 소거 방법 및 이를 수행하는 비휘발성 메모리 장치
KR20220019547A (ko) * 2020-08-10 2022-02-17 삼성전자주식회사 불휘발성 메모리 장치를 포함하는 메모리 시스템 및 이의 소거 방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5625600A (en) * 1995-05-05 1997-04-29 United Microelectronics Corporation Flash memory array with self-limiting erase
US5995417A (en) * 1998-10-20 1999-11-30 Advanced Micro Devices, Inc. Scheme for page erase and erase verify in a non-volatile memory array
US6198662B1 (en) * 1999-06-24 2001-03-06 Amic Technology, Inc. Circuit and method for pre-erasing/erasing flash memory array
WO2001045113A1 (en) * 1999-12-17 2001-06-21 Advanced Micro Devices, Inc. Method to provide a reduced constant e-field during erase of eeproms for reliability improvement
KR100414146B1 (ko) * 2000-06-27 2004-01-13 주식회사 하이닉스반도체 플래쉬 메모리 소자의 소거 방법
US6452840B1 (en) * 2000-10-21 2002-09-17 Advanced Micro Devices, Inc. Feedback method to optimize electric field during channel erase of flash memory devices
JP4005895B2 (ja) * 2002-09-30 2007-11-14 株式会社東芝 不揮発性半導体メモリ装置

Also Published As

Publication number Publication date
EP1864292B1 (de) 2010-02-10
KR20080044203A (ko) 2008-05-20
JP2008536249A (ja) 2008-09-04
ATE457518T1 (de) 2010-02-15
JP4762305B2 (ja) 2011-08-31
WO2006124122A3 (en) 2006-12-28
CN101199024A (zh) 2008-06-11
EP1864292A2 (de) 2007-12-12
WO2006124122A2 (en) 2006-11-23
CN101199024B (zh) 2010-09-01
TW200703339A (en) 2007-01-16
TWI319878B (en) 2010-01-21
KR100909720B1 (ko) 2009-07-29

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