TW200502971A - Tracking cells for a memory system - Google Patents

Tracking cells for a memory system

Info

Publication number
TW200502971A
TW200502971A TW093116691A TW93116691A TW200502971A TW 200502971 A TW200502971 A TW 200502971A TW 093116691 A TW093116691 A TW 093116691A TW 93116691 A TW93116691 A TW 93116691A TW 200502971 A TW200502971 A TW 200502971A
Authority
TW
Taiwan
Prior art keywords
tracking cells
memory system
cells
data
tracking
Prior art date
Application number
TW093116691A
Other languages
English (en)
Other versions
TWI244089B (en
Inventor
Daniel C Guterman
Stephen J Gross
Shahzad Khalid
Geoffrey S Gongwer
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
Application filed by Sandisk Corp filed Critical Sandisk Corp
Publication of TW200502971A publication Critical patent/TW200502971A/zh
Application granted granted Critical
Publication of TWI244089B publication Critical patent/TWI244089B/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
    • 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
    • G11C16/26—Sensing or reading circuits; Data output circuits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C16/00—Erasable programmable read-only memories
    • 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
    • G11C16/349—Arrangements for evaluating degradation, retention or wearout, e.g. by counting erase cycles
    • 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
TW093116691A 2003-06-13 2004-06-10 Tracking cells for a memory system TWI244089B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/461,244 US7237074B2 (en) 2003-06-13 2003-06-13 Tracking cells for a memory system

Publications (2)

Publication Number Publication Date
TW200502971A true TW200502971A (en) 2005-01-16
TWI244089B TWI244089B (en) 2005-11-21

Family

ID=33511212

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093116691A TWI244089B (en) 2003-06-13 2004-06-10 Tracking cells for a memory system

Country Status (8)

Country Link
US (5) US7237074B2 (zh)
EP (1) EP1636802B1 (zh)
JP (1) JP4681559B2 (zh)
KR (1) KR101049580B1 (zh)
CN (1) CN1826659B (zh)
AT (1) ATE535912T1 (zh)
TW (1) TWI244089B (zh)
WO (1) WO2004114313A2 (zh)

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