TWI346957B - Method, system, and memory device for generating soft bits in flash memories - Google Patents

Method, system, and memory device for generating soft bits in flash memories

Info

Publication number
TWI346957B
TWI346957B TW096112562A TW96112562A TWI346957B TW I346957 B TWI346957 B TW I346957B TW 096112562 A TW096112562 A TW 096112562A TW 96112562 A TW96112562 A TW 96112562A TW I346957 B TWI346957 B TW I346957B
Authority
TW
Taiwan
Prior art keywords
memory device
flash memories
soft bits
generating soft
generating
Prior art date
Application number
TW096112562A
Other languages
English (en)
Other versions
TW200746156A (en
Inventor
Mark Murin
Mark Shlick
Original Assignee
Sandisk Il Ltd
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
Application filed by Sandisk Il Ltd filed Critical Sandisk Il Ltd
Publication of TW200746156A publication Critical patent/TW200746156A/zh
Application granted granted Critical
Publication of TWI346957B publication Critical patent/TWI346957B/zh

Links

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
    • G11C11/56—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
    • G11C11/5642—Sensing or reading circuits; Data output circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Read Only Memory (AREA)
TW096112562A 2006-04-11 2007-04-10 Method, system, and memory device for generating soft bits in flash memories TWI346957B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74460106P 2006-04-11 2006-04-11
US11/651,483 US7502254B2 (en) 2006-04-11 2007-01-10 Method for generating soft bits in flash memories

Publications (2)

Publication Number Publication Date
TW200746156A TW200746156A (en) 2007-12-16
TWI346957B true TWI346957B (en) 2011-08-11

Family

ID=38453638

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096112562A TWI346957B (en) 2006-04-11 2007-04-10 Method, system, and memory device for generating soft bits in flash memories

Country Status (3)

Country Link
US (2) US7502254B2 (zh)
TW (1) TWI346957B (zh)
WO (1) WO2007116393A2 (zh)

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US7971127B2 (en) * 2007-03-31 2011-06-28 Sandisk Technologies Inc. Guided simulated annealing in non-volatile memory error correction control
US7966550B2 (en) 2007-03-31 2011-06-21 Sandisk Technologies Inc. Soft bit data transmission for error correction control in non-volatile memory
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US7656707B2 (en) * 2007-12-14 2010-02-02 Intel Corporation Systems and methods for discrete channel decoding of LDPC codes for flash memory
US8433980B2 (en) * 2008-06-23 2013-04-30 Sandisk Il Ltd. Fast, low-power reading of data in a flash memory
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US20100220514A1 (en) * 2009-03-02 2010-09-02 Lyric Semiconductor, Inc. Storage devices with soft processing
US8458114B2 (en) * 2009-03-02 2013-06-04 Analog Devices, Inc. Analog computation using numerical representations with uncertainty
US8179731B2 (en) * 2009-03-27 2012-05-15 Analog Devices, Inc. Storage devices with soft processing
US8027195B2 (en) 2009-06-05 2011-09-27 SanDisk Technologies, Inc. Folding data stored in binary format into multi-state format within non-volatile memory devices
US8102705B2 (en) 2009-06-05 2012-01-24 Sandisk Technologies Inc. Structure and method for shuffling data within non-volatile memory devices
US20110002169A1 (en) 2009-07-06 2011-01-06 Yan Li Bad Column Management with Bit Information in Non-Volatile Memory Systems
US8468294B2 (en) 2009-12-18 2013-06-18 Sandisk Technologies Inc. Non-volatile memory with multi-gear control using on-chip folding of data
US20110153912A1 (en) 2009-12-18 2011-06-23 Sergey Anatolievich Gorobets Maintaining Updates of Multi-Level Non-Volatile Memory in Binary Non-Volatile Memory
US8144512B2 (en) 2009-12-18 2012-03-27 Sandisk Technologies Inc. Data transfer flows for on-chip folding
US8725935B2 (en) 2009-12-18 2014-05-13 Sandisk Technologies Inc. Balanced performance for on-chip folding of non-volatile memories
KR101618311B1 (ko) 2010-02-08 2016-05-04 삼성전자주식회사 플래시 메모리 장치 및 그것의 읽기 방법
KR101635506B1 (ko) 2010-03-29 2016-07-04 삼성전자주식회사 데이터 저장 시스템 및 그것의 읽기 방법
US8417876B2 (en) 2010-06-23 2013-04-09 Sandisk Technologies Inc. Use of guard bands and phased maintenance operations to avoid exceeding maximum latency requirements in non-volatile memory systems
CN107093464A (zh) 2010-07-13 2017-08-25 桑迪士克科技有限责任公司 后台存储器系统接口的动态优化
US8464135B2 (en) 2010-07-13 2013-06-11 Sandisk Technologies Inc. Adaptive flash interface
US9069688B2 (en) 2011-04-15 2015-06-30 Sandisk Technologies Inc. Dynamic optimization of back-end memory system interface
US9342446B2 (en) 2011-03-29 2016-05-17 SanDisk Technologies, Inc. Non-volatile memory system allowing reverse eviction of data updates to non-volatile binary cache
US9032269B2 (en) 2011-07-22 2015-05-12 Sandisk Technologies Inc. Systems and methods of storing data
US8775901B2 (en) 2011-07-28 2014-07-08 SanDisk Technologies, Inc. Data recovery for defective word lines during programming of non-volatile memory arrays
US9030870B2 (en) * 2011-08-26 2015-05-12 Micron Technology, Inc. Threshold voltage compensation in a multilevel memory
US8842473B2 (en) 2012-03-15 2014-09-23 Sandisk Technologies Inc. Techniques for accessing column selecting shift register with skipped entries in non-volatile memories
US8681548B2 (en) 2012-05-03 2014-03-25 Sandisk Technologies Inc. Column redundancy circuitry for non-volatile memory
US20140071761A1 (en) 2012-09-10 2014-03-13 Sandisk Technologies Inc. Non-volatile storage with joint hard bit and soft bit reading
US9490035B2 (en) 2012-09-28 2016-11-08 SanDisk Technologies, Inc. Centralized variable rate serializer and deserializer for bad column management
US9076506B2 (en) 2012-09-28 2015-07-07 Sandisk Technologies Inc. Variable rate parallel to serial shift register
US8897080B2 (en) 2012-09-28 2014-11-25 Sandisk Technologies Inc. Variable rate serial to parallel shift register
US10468096B2 (en) 2012-10-15 2019-11-05 Seagate Technology Llc Accelerated soft read for multi-level cell nonvolatile memories
US9190174B2 (en) 2012-11-30 2015-11-17 Micron Technology, Inc. Determining soft data from a hard read
US9116822B2 (en) 2012-12-07 2015-08-25 Micron Technology, Inc. Stopping criteria for layered iterative error correction
US9076545B2 (en) 2013-01-17 2015-07-07 Sandisk Tecnologies Inc. Dynamic adjustment of read voltage levels based on memory cell threshold voltage distribution
US9065483B2 (en) 2013-01-21 2015-06-23 Micron Technology, Inc. Determining soft data using a classification code
US9229848B2 (en) 2013-01-21 2016-01-05 Micron Technology, Inc. Determining soft data for fractional digit memory cells
JP2014157650A (ja) * 2013-02-18 2014-08-28 Toshiba Corp 半導体記憶装置
US9384128B2 (en) 2014-04-18 2016-07-05 SanDisk Technologies, Inc. Multi-level redundancy code for non-volatile memory controller
US9934872B2 (en) 2014-10-30 2018-04-03 Sandisk Technologies Llc Erase stress and delta erase loop count methods for various fail modes in non-volatile memory
US9224502B1 (en) 2015-01-14 2015-12-29 Sandisk Technologies Inc. Techniques for detection and treating memory hole to local interconnect marginality defects
US10032524B2 (en) 2015-02-09 2018-07-24 Sandisk Technologies Llc Techniques for determining local interconnect defects
US9564219B2 (en) 2015-04-08 2017-02-07 Sandisk Technologies Llc Current based detection and recording of memory hole-interconnect spacing defects
US9269446B1 (en) 2015-04-08 2016-02-23 Sandisk Technologies Inc. Methods to improve programming of slow cells
US10474525B2 (en) * 2015-08-11 2019-11-12 Sandisk Technologies Llc Soft bit techniques for a data storage device
CN113113076B (zh) * 2017-08-08 2024-07-26 慧荣科技股份有限公司 解码方法及相关的闪存控制器与电子装置
US10636504B2 (en) 2017-10-31 2020-04-28 Sandisk Technologies Llc Read verify for improved soft bit information for non-volatile memories with residual resistance
US11004508B2 (en) * 2019-08-30 2021-05-11 Sandisk Technologies Llc One selector one resistor RAM threshold voltage drift and offset voltage compensation methods

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US6456528B1 (en) * 2001-09-17 2002-09-24 Sandisk Corporation Selective operation of a multi-state non-volatile memory system in a binary mode
JP2003257187A (ja) * 2002-02-28 2003-09-12 Hitachi Ltd 不揮発性メモリ、ｉｃカード及びデータ処理装置
US6751766B2 (en) * 2002-05-20 2004-06-15 Sandisk Corporation Increasing the effectiveness of error correction codes and operating multi-level memory systems by using information about the quality of the stored data
JP3889699B2 (ja) * 2002-11-29 2007-03-07 株式会社東芝 不揮発性半導体記憶装置及びそのデータ書き込み方法
US7023735B2 (en) * 2003-06-17 2006-04-04 Ramot At Tel-Aviv University Ltd. Methods of increasing the reliability of a flash memory
US7372731B2 (en) * 2003-06-17 2008-05-13 Sandisk Il Ltd. Flash memories with adaptive reference voltages
US7149121B2 (en) * 2005-01-26 2006-12-12 Macronix International Co., Ltd. Method and apparatus for changing operating conditions of nonvolatile memory
US7502254B2 (en) 2006-04-11 2009-03-10 Sandisk Il Ltd Method for generating soft bits in flash memories
US7286412B1 (en) * 2006-05-09 2007-10-23 Macronix International Co., Ltd. Method and apparatus to improve nonvolatile memory data retention
US7539059B2 (en) * 2006-12-29 2009-05-26 Intel Corporation Selective bit line precharging in non volatile memory

Also Published As

Publication number Publication date
US20070237006A1 (en) 2007-10-11
TW200746156A (en) 2007-12-16
US8059463B2 (en) 2011-11-15
WO2007116393A3 (en) 2007-11-22
US20090168516A1 (en) 2009-07-02
US7502254B2 (en) 2009-03-10
WO2007116393A2 (en) 2007-10-18

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MM4A Annulment or lapse of patent due to non-payment of fees