DE19882265B4 - Flash-Speicher-VDS-Kompensationstechniken zum Verringern von Programmierschwankungen - Google Patents
Flash-Speicher-VDS-Kompensationstechniken zum Verringern von Programmierschwankungen Download PDFInfo
- Publication number
- DE19882265B4 DE19882265B4 DE19882265T DE19882265T DE19882265B4 DE 19882265 B4 DE19882265 B4 DE 19882265B4 DE 19882265 T DE19882265 T DE 19882265T DE 19882265 T DE19882265 T DE 19882265T DE 19882265 B4 DE19882265 B4 DE 19882265B4
- Authority
- DE
- Germany
- Prior art keywords
- source
- volatile memory
- voltage
- memory cell
- bit line
- 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.)
- Expired - Fee Related
Links
- 230000015654 memory Effects 0.000 title claims abstract description 389
- 238000000034 method Methods 0.000 title claims description 29
- 230000006870 function Effects 0.000 claims description 8
- 230000001419 dependent effect Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 description 223
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009897 systematic effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000005689 Fowler Nordheim tunneling Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000002784 hot electron Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- G11C16/30—Power supply circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Read Only Memory (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/828,873 US5798966A (en) | 1997-03-31 | 1997-03-31 | Flash memory VDS compensation techiques to reduce programming variability |
| US08/828,873 | 1997-03-31 | ||
| PCT/US1998/001599 WO1998044510A1 (en) | 1997-03-31 | 1998-01-28 | Flash memory vds compensation techniques to reduce programming variability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE19882265T1 DE19882265T1 (de) | 2000-05-25 |
| DE19882265B4 true DE19882265B4 (de) | 2005-02-10 |
Family
ID=25252981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19882265T Expired - Fee Related DE19882265B4 (de) | 1997-03-31 | 1998-01-28 | Flash-Speicher-VDS-Kompensationstechniken zum Verringern von Programmierschwankungen |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5798966A (enExample) |
| JP (1) | JP4173555B2 (enExample) |
| KR (1) | KR100313746B1 (enExample) |
| CN (1) | CN100392759C (enExample) |
| AU (1) | AU6252398A (enExample) |
| DE (1) | DE19882265B4 (enExample) |
| TW (1) | TW425557B (enExample) |
| WO (1) | WO1998044510A1 (enExample) |
| ZA (1) | ZA981131B (enExample) |
Families Citing this family (101)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60041050D1 (de) * | 2000-07-18 | 2009-01-22 | St Microelectronics Srl | Verfahren und Schaltung zum Ändern der Schwellenspannungen von nichtflüchtigen Speicherzellen |
| US7247304B2 (en) * | 2001-08-23 | 2007-07-24 | Genmab A/S | Methods of treating using anti-IL-15 antibodies |
| EP1331644B1 (en) * | 2001-12-28 | 2007-03-14 | STMicroelectronics S.r.l. | Regulation method for the source voltage in a nonvolatile memory cell during programming and corresponding program circuit |
| US6781884B2 (en) * | 2002-03-11 | 2004-08-24 | Fujitsu Limited | System for setting memory voltage threshold |
| JP2004110871A (ja) * | 2002-09-13 | 2004-04-08 | Fujitsu Ltd | 不揮発性半導体記憶装置 |
| US6639824B1 (en) * | 2002-09-19 | 2003-10-28 | Infineon Technologies Aktiengesellschaft | Memory architecture |
| KR100550790B1 (ko) * | 2003-03-07 | 2006-02-08 | 주식회사 하이닉스반도체 | 플래시 메모리용 드레인 펌프 |
| US6909638B2 (en) * | 2003-04-30 | 2005-06-21 | Freescale Semiconductor, Inc. | Non-volatile memory having a bias on the source electrode for HCI programming |
| US6891758B2 (en) * | 2003-05-08 | 2005-05-10 | Micron Technology, Inc. | Position based erase verification levels in a flash memory device |
| KR100688494B1 (ko) * | 2003-07-10 | 2007-03-02 | 삼성전자주식회사 | 플래시 메모리 장치 |
| JP4278140B2 (ja) * | 2003-09-03 | 2009-06-10 | シャープ株式会社 | 半導体記憶装置 |
| US7009887B1 (en) * | 2004-06-03 | 2006-03-07 | Fasl Llc | Method of determining voltage compensation for flash memory devices |
| KR100606173B1 (ko) * | 2004-08-24 | 2006-08-01 | 삼성전자주식회사 | 불휘발성 메모리 장치의 초기화 상태를 검증하는 방법 및장치 |
| US7218570B2 (en) * | 2004-12-17 | 2007-05-15 | Sandisk 3D Llc | Apparatus and method for memory operations using address-dependent conditions |
| JP4746326B2 (ja) * | 2005-01-13 | 2011-08-10 | 株式会社東芝 | 不揮発性半導体記憶装置 |
| KR100714485B1 (ko) * | 2005-08-23 | 2007-05-07 | 삼성전자주식회사 | 비휘발성 반도체 메모리 장치 |
| KR100735010B1 (ko) | 2005-09-08 | 2007-07-03 | 삼성전자주식회사 | 플래시 메모리 장치 및 그것을 위한 전압 발생회로 |
| US20070140019A1 (en) * | 2005-12-21 | 2007-06-21 | Macronix International Co., Ltd. | Method and apparatus for operating a string of charge trapping memory cells |
| KR101333503B1 (ko) * | 2006-02-03 | 2013-11-28 | 삼성전자주식회사 | 프로그램 셀의 수에 따라 프로그램 전압을 조절하는 반도체메모리 장치 및 그것의 프로그램 방법 |
| US7313018B2 (en) * | 2006-03-08 | 2007-12-25 | Macronix International Co., Ltd. | Methods and apparatus for a non-volatile memory device with reduced program disturb |
| WO2007132456A2 (en) | 2006-05-12 | 2007-11-22 | Anobit Technologies Ltd. | Memory device with adaptive capacity |
| US8156403B2 (en) | 2006-05-12 | 2012-04-10 | Anobit Technologies Ltd. | Combined distortion estimation and error correction coding for memory devices |
| US8050086B2 (en) * | 2006-05-12 | 2011-11-01 | Anobit Technologies Ltd. | Distortion estimation and cancellation in memory devices |
| US8060806B2 (en) * | 2006-08-27 | 2011-11-15 | Anobit Technologies Ltd. | Estimation of non-linear distortion in memory devices |
| US7975192B2 (en) | 2006-10-30 | 2011-07-05 | Anobit Technologies Ltd. | Reading memory cells using multiple thresholds |
| WO2008068747A2 (en) | 2006-12-03 | 2008-06-12 | Anobit Technologies Ltd. | Automatic defect management in memory devices |
| US8151166B2 (en) | 2007-01-24 | 2012-04-03 | Anobit Technologies Ltd. | Reduction of back pattern dependency effects in memory devices |
| WO2008111058A2 (en) | 2007-03-12 | 2008-09-18 | Anobit Technologies Ltd. | Adaptive estimation of memory cell read thresholds |
| US8001320B2 (en) | 2007-04-22 | 2011-08-16 | Anobit Technologies Ltd. | Command interface for memory devices |
| US8429493B2 (en) * | 2007-05-12 | 2013-04-23 | Apple Inc. | Memory device with internal signap processing unit |
| US8234545B2 (en) | 2007-05-12 | 2012-07-31 | Apple Inc. | Data storage with incremental redundancy |
| JP4504397B2 (ja) * | 2007-05-29 | 2010-07-14 | 株式会社東芝 | 半導体記憶装置 |
| US8259497B2 (en) * | 2007-08-06 | 2012-09-04 | Apple Inc. | Programming schemes for multi-level analog memory cells |
| US8174905B2 (en) | 2007-09-19 | 2012-05-08 | Anobit Technologies Ltd. | Programming orders for reducing distortion in arrays of multi-level analog memory cells |
| US8000141B1 (en) | 2007-10-19 | 2011-08-16 | Anobit Technologies Ltd. | Compensation for voltage drifts in analog memory cells |
| WO2009050703A2 (en) | 2007-10-19 | 2009-04-23 | Anobit Technologies | Data storage in analog memory cell arrays having erase failures |
| US8068360B2 (en) | 2007-10-19 | 2011-11-29 | Anobit Technologies Ltd. | Reading analog memory cells using built-in multi-threshold commands |
| US8270246B2 (en) | 2007-11-13 | 2012-09-18 | Apple Inc. | Optimized selection of memory chips in multi-chips memory devices |
| US8225181B2 (en) * | 2007-11-30 | 2012-07-17 | Apple Inc. | Efficient re-read operations from memory devices |
| US8209588B2 (en) | 2007-12-12 | 2012-06-26 | Anobit Technologies Ltd. | Efficient interference cancellation in analog memory cell arrays |
| US8456905B2 (en) * | 2007-12-16 | 2013-06-04 | Apple Inc. | Efficient data storage in multi-plane memory devices |
| US8085586B2 (en) | 2007-12-27 | 2011-12-27 | Anobit Technologies Ltd. | Wear level estimation in analog memory cells |
| US8156398B2 (en) | 2008-02-05 | 2012-04-10 | Anobit Technologies Ltd. | Parameter estimation based on error correction code parity check equations |
| US8230300B2 (en) | 2008-03-07 | 2012-07-24 | Apple Inc. | Efficient readout from analog memory cells using data compression |
| US8400858B2 (en) | 2008-03-18 | 2013-03-19 | Apple Inc. | Memory device with reduced sense time readout |
| US8059457B2 (en) | 2008-03-18 | 2011-11-15 | Anobit Technologies Ltd. | Memory device with multiple-accuracy read commands |
| JP2009301691A (ja) * | 2008-06-17 | 2009-12-24 | Renesas Technology Corp | 不揮発性半導体記憶装置 |
| JP2010055735A (ja) * | 2008-07-31 | 2010-03-11 | Panasonic Corp | 半導体記憶装置 |
| US8498151B1 (en) | 2008-08-05 | 2013-07-30 | Apple Inc. | Data storage in analog memory cells using modified pass voltages |
| US8949684B1 (en) | 2008-09-02 | 2015-02-03 | Apple Inc. | Segmented data storage |
| US8169825B1 (en) | 2008-09-02 | 2012-05-01 | Anobit Technologies Ltd. | Reliable data storage in analog memory cells subjected to long retention periods |
| US8482978B1 (en) | 2008-09-14 | 2013-07-09 | Apple Inc. | Estimation of memory cell read thresholds by sampling inside programming level distribution intervals |
| US8000135B1 (en) | 2008-09-14 | 2011-08-16 | Anobit Technologies Ltd. | Estimation of memory cell read thresholds by sampling inside programming level distribution intervals |
| US8239734B1 (en) | 2008-10-15 | 2012-08-07 | Apple Inc. | Efficient data storage in storage device arrays |
| US8261159B1 (en) | 2008-10-30 | 2012-09-04 | Apple, Inc. | Data scrambling schemes for memory devices |
| US8094509B2 (en) * | 2008-10-30 | 2012-01-10 | Spansion Llc | Apparatus and method for placement of boosting cell with adaptive booster scheme |
| US8208304B2 (en) | 2008-11-16 | 2012-06-26 | Anobit Technologies Ltd. | Storage at M bits/cell density in N bits/cell analog memory cell devices, M>N |
| KR20100058166A (ko) * | 2008-11-24 | 2010-06-03 | 삼성전자주식회사 | 불휘발성 메모리 장치 및 그것을 포함하는 메모리 시스템 |
| US8248831B2 (en) | 2008-12-31 | 2012-08-21 | Apple Inc. | Rejuvenation of analog memory cells |
| US8397131B1 (en) | 2008-12-31 | 2013-03-12 | Apple Inc. | Efficient readout schemes for analog memory cell devices |
| KR20100084285A (ko) * | 2009-01-16 | 2010-07-26 | 삼성전자주식회사 | 셀의 위치를 고려하여 니어-셀과 파-셀간 동작 전압의 차이를 보상하는 반도체 메모리 장치, 그를 포함하는 메모리 카드 및 메모리 시스템 |
| US8924661B1 (en) | 2009-01-18 | 2014-12-30 | Apple Inc. | Memory system including a controller and processors associated with memory devices |
| JP5468023B2 (ja) * | 2009-02-06 | 2014-04-09 | パナソニック株式会社 | 不揮発性半導体メモリ |
| US8228701B2 (en) * | 2009-03-01 | 2012-07-24 | Apple Inc. | Selective activation of programming schemes in analog memory cell arrays |
| US8832354B2 (en) | 2009-03-25 | 2014-09-09 | Apple Inc. | Use of host system resources by memory controller |
| US8259506B1 (en) | 2009-03-25 | 2012-09-04 | Apple Inc. | Database of memory read thresholds |
| US8238157B1 (en) | 2009-04-12 | 2012-08-07 | Apple Inc. | Selective re-programming of analog memory cells |
| US8479080B1 (en) | 2009-07-12 | 2013-07-02 | Apple Inc. | Adaptive over-provisioning in memory systems |
| US8004875B2 (en) * | 2009-07-13 | 2011-08-23 | Seagate Technology Llc | Current magnitude compensation for memory cells in a data storage array |
| US8495465B1 (en) | 2009-10-15 | 2013-07-23 | Apple Inc. | Error correction coding over multiple memory pages |
| JP5259552B2 (ja) | 2009-11-02 | 2013-08-07 | 株式会社東芝 | 不揮発性半導体記憶装置及びその駆動方法 |
| US8677054B1 (en) | 2009-12-16 | 2014-03-18 | Apple Inc. | Memory management schemes for non-volatile memory devices |
| US8694814B1 (en) | 2010-01-10 | 2014-04-08 | Apple Inc. | Reuse of host hibernation storage space by memory controller |
| US8572311B1 (en) | 2010-01-11 | 2013-10-29 | Apple Inc. | Redundant data storage in multi-die memory systems |
| KR101644979B1 (ko) * | 2010-02-01 | 2016-08-03 | 삼성전자주식회사 | 불휘발성 메모리 장치 및 그것의 읽기 방법 |
| US8619489B2 (en) | 2010-04-30 | 2013-12-31 | Stmicroelectronics S.R.L. | Driving circuit for memory device |
| US8694853B1 (en) | 2010-05-04 | 2014-04-08 | Apple Inc. | Read commands for reading interfering memory cells |
| US8572423B1 (en) | 2010-06-22 | 2013-10-29 | Apple Inc. | Reducing peak current in memory systems |
| US8595591B1 (en) | 2010-07-11 | 2013-11-26 | Apple Inc. | Interference-aware assignment of programming levels in analog memory cells |
| US9104580B1 (en) | 2010-07-27 | 2015-08-11 | Apple Inc. | Cache memory for hybrid disk drives |
| US8767459B1 (en) | 2010-07-31 | 2014-07-01 | Apple Inc. | Data storage in analog memory cells across word lines using a non-integer number of bits per cell |
| US8856475B1 (en) | 2010-08-01 | 2014-10-07 | Apple Inc. | Efficient selection of memory blocks for compaction |
| US8694854B1 (en) | 2010-08-17 | 2014-04-08 | Apple Inc. | Read threshold setting based on soft readout statistics |
| JP5502773B2 (ja) * | 2011-02-01 | 2014-05-28 | 株式会社東芝 | 不揮発性半導体記憶装置 |
| WO2012039511A1 (en) * | 2010-09-24 | 2012-03-29 | Kabushiki Kaisha Toshiba | Nonvolatile semiconductor memory device |
| US9021181B1 (en) | 2010-09-27 | 2015-04-28 | Apple Inc. | Memory management for unifying memory cell conditions by using maximum time intervals |
| US8923040B2 (en) * | 2013-01-30 | 2014-12-30 | Taiwan Semiconductor Manufacturing Co., Ltd. | Accommodating balance of bit line and source line resistances in magnetoresistive random access memory |
| US9202579B2 (en) * | 2013-03-14 | 2015-12-01 | Sandisk Technologies Inc. | Compensation for temperature dependence of bit line resistance |
| JP6149598B2 (ja) * | 2013-08-19 | 2017-06-21 | ソニー株式会社 | 記憶制御装置、記憶装置、情報処理システムおよび記憶制御方法 |
| US9633742B2 (en) | 2014-07-10 | 2017-04-25 | Sandisk Technologies Llc | Segmentation of blocks for faster bit line settling/recovery in non-volatile memory devices |
| US9728262B2 (en) * | 2015-10-30 | 2017-08-08 | Sandisk Technologies Llc | Non-volatile memory systems with multi-write direction memory units |
| CN106297887B (zh) * | 2016-07-27 | 2020-05-19 | 深圳市航顺芯片技术研发有限公司 | 一种提升eeprom存储器编程精度的升压电路及其方法 |
| JP7031672B2 (ja) * | 2017-09-01 | 2022-03-08 | ソニーグループ株式会社 | メモリコントローラ、メモリシステムおよび情報処理システム |
| US10199100B1 (en) * | 2017-09-28 | 2019-02-05 | Inston Inc. | Sensing circuit and memory using thereof |
| CN110718257A (zh) * | 2018-07-11 | 2020-01-21 | 西安格易安创集成电路有限公司 | 一种电压偏置电路及方法 |
| US10755788B2 (en) | 2018-11-06 | 2020-08-25 | Sandisk Technologies Llc | Impedance mismatch mitigation scheme that applies asymmetric voltage pulses to compensate for asymmetries from applying symmetric voltage pulses |
| US10910064B2 (en) * | 2018-11-06 | 2021-02-02 | Sandisk Technologies Llc | Location dependent impedance mitigation in non-volatile memory |
| US10650898B1 (en) * | 2018-11-06 | 2020-05-12 | Sandisk Technologies Llc | Erase operation in 3D NAND flash memory including pathway impedance compensation |
| US11205480B1 (en) * | 2020-09-11 | 2021-12-21 | Micron Technology, Inc. | Ramp-based biasing in a memory device |
| US11556416B2 (en) | 2021-05-05 | 2023-01-17 | Apple Inc. | Controlling memory readout reliability and throughput by adjusting distance between read thresholds |
| US11847342B2 (en) | 2021-07-28 | 2023-12-19 | Apple Inc. | Efficient transfer of hard data and confidence levels in reading a nonvolatile memory |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5402370A (en) * | 1993-09-10 | 1995-03-28 | Intel Corporation | Circuitry and method for selecting a drain programming voltage for a nonvolatile memory |
| US5440405A (en) * | 1992-09-02 | 1995-08-08 | Ricoh Company, Ltd. | Method and system for error correction using asynchronous digital facsimile protocol |
| US5497354A (en) * | 1994-06-02 | 1996-03-05 | Intel Corporation | Bit map addressing schemes for flash memory |
| US5539690A (en) * | 1994-06-02 | 1996-07-23 | Intel Corporation | Write verify schemes for flash memory with multilevel cells |
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| US5010520A (en) * | 1987-07-29 | 1991-04-23 | Kabushiki Kaisha Toshiba | Nonvolatile semiconductor memory device with stabilized data write characteristic |
| US5077691A (en) * | 1989-10-23 | 1991-12-31 | Advanced Micro Devices, Inc. | Flash EEPROM array with negative gate voltage erase operation |
| US5557572A (en) * | 1992-04-24 | 1996-09-17 | Nippon Steel Corporation | Non-volatile semiconductor memory device |
| US5420370A (en) * | 1992-11-20 | 1995-05-30 | Colorado School Of Mines | Method for controlling clathrate hydrates in fluid systems |
| DE4328581A1 (de) * | 1993-08-25 | 1995-03-02 | Nico Pyrotechnik | Nebelwurfkörper |
| US5422845A (en) * | 1993-09-30 | 1995-06-06 | Intel Corporation | Method and device for improved programming threshold voltage distribution in electrically programmable read only memory array |
| US5477499A (en) * | 1993-10-13 | 1995-12-19 | Advanced Micro Devices, Inc. | Memory architecture for a three volt flash EEPROM |
| US5440505A (en) * | 1994-01-21 | 1995-08-08 | Intel Corporation | Method and circuitry for storing discrete amounts of charge in a single memory element |
-
1997
- 1997-03-31 US US08/828,873 patent/US5798966A/en not_active Expired - Lifetime
-
1998
- 1998-01-28 JP JP54160898A patent/JP4173555B2/ja not_active Expired - Fee Related
- 1998-01-28 CN CNB98803865XA patent/CN100392759C/zh not_active Expired - Fee Related
- 1998-01-28 WO PCT/US1998/001599 patent/WO1998044510A1/en not_active Ceased
- 1998-01-28 AU AU62523/98A patent/AU6252398A/en not_active Abandoned
- 1998-01-28 DE DE19882265T patent/DE19882265B4/de not_active Expired - Fee Related
- 1998-02-11 ZA ZA9801131A patent/ZA981131B/xx unknown
- 1998-02-18 TW TW087102262A patent/TW425557B/zh not_active IP Right Cessation
-
1999
- 1999-09-29 KR KR1019997008899A patent/KR100313746B1/ko not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440405A (en) * | 1992-09-02 | 1995-08-08 | Ricoh Company, Ltd. | Method and system for error correction using asynchronous digital facsimile protocol |
| US5402370A (en) * | 1993-09-10 | 1995-03-28 | Intel Corporation | Circuitry and method for selecting a drain programming voltage for a nonvolatile memory |
| US5497354A (en) * | 1994-06-02 | 1996-03-05 | Intel Corporation | Bit map addressing schemes for flash memory |
| US5539690A (en) * | 1994-06-02 | 1996-07-23 | Intel Corporation | Write verify schemes for flash memory with multilevel cells |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4173555B2 (ja) | 2008-10-29 |
| CN100392759C (zh) | 2008-06-04 |
| KR20010005825A (ko) | 2001-01-15 |
| ZA981131B (en) | 1999-08-11 |
| AU6252398A (en) | 1998-10-22 |
| JP2001517350A (ja) | 2001-10-02 |
| KR100313746B1 (ko) | 2001-11-16 |
| TW425557B (en) | 2001-03-11 |
| CN1251683A (zh) | 2000-04-26 |
| US5798966A (en) | 1998-08-25 |
| DE19882265T1 (de) | 2000-05-25 |
| WO1998044510A1 (en) | 1998-10-08 |
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