WO2007039087A3 - Method and circuitry to generate a reference current for reading a memory cell, and device implementing same - Google Patents

Method and circuitry to generate a reference current for reading a memory cell, and device implementing same Download PDF

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Publication number
WO2007039087A3
WO2007039087A3 PCT/EP2006/009070 EP2006009070W WO2007039087A3 WO 2007039087 A3 WO2007039087 A3 WO 2007039087A3 EP 2006009070 W EP2006009070 W EP 2006009070W WO 2007039087 A3 WO2007039087 A3 WO 2007039087A3
Authority
WO
WIPO (PCT)
Prior art keywords
circuitry
reference current
memory cell
reading
generate
Prior art date
Application number
PCT/EP2006/009070
Other languages
French (fr)
Other versions
WO2007039087A2 (en
Inventor
Philippe Bauser
Original Assignee
Innovative Silicon Sa
Philippe Bauser
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 Innovative Silicon Sa, Philippe Bauser filed Critical Innovative Silicon Sa
Priority to EP06805759A priority Critical patent/EP1927111B1/en
Priority to DE602006007155T priority patent/DE602006007155D1/en
Priority to AT06805759T priority patent/ATE433186T1/en
Publication of WO2007039087A2 publication Critical patent/WO2007039087A2/en
Publication of WO2007039087A3 publication Critical patent/WO2007039087A3/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/14—Dummy cell management; Sense reference voltage generators
    • 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
    • G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
    • G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
    • G11C11/4063—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing
    • G11C11/407—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing for memory cells of the field-effect type
    • G11C11/409—Read-write [R-W] circuits 
    • G11C11/4099—Dummy cell treatment; Reference voltage generators

Abstract

There are many inventions disclosed herein. In one aspect, the present inventions are directed to methods and circuitry to control, adjust, determine and/or modify the absolute and/or relative positioning or location (i.e., absolute or relative amount) of reference current which is employed by sensing circuitry to sense the data state of a memory cell during a read operation of one or more memory cells. The control, adjustment, determination and/or modification of the reference current levels may be implemented using many different, distinct and/or diverse techniques and circuitry, including both analog and digital techniques and circuitry.
PCT/EP2006/009070 2005-09-19 2006-09-19 Method and circuitry to generate a reference current for reading a memory cell, and device implementing same WO2007039087A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06805759A EP1927111B1 (en) 2005-09-19 2006-09-19 Method and circuitry to generate a reference current for reading a memory cell, and device implementing same
DE602006007155T DE602006007155D1 (en) 2005-09-19 2006-09-19 METHOD AND CIRCUIT FOR GENERATING A REFERENCE CURRENT FOR READING A MEMORY CELL AND DEVICE THEREWITH
AT06805759T ATE433186T1 (en) 2005-09-19 2006-09-19 METHOD AND CIRCUIT FOR GENERATING A REFERENCE CURRENT FOR READING A MEMORY CELL AND DEVICE THEREFOR

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US71841705P 2005-09-19 2005-09-19
US60/718,417 2005-09-19
US11/515,667 2006-09-05
US11/515,667 US7355916B2 (en) 2005-09-19 2006-09-05 Method and circuitry to generate a reference current for reading a memory cell, and device implementing same

Publications (2)

Publication Number Publication Date
WO2007039087A2 WO2007039087A2 (en) 2007-04-12
WO2007039087A3 true WO2007039087A3 (en) 2007-07-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/009070 WO2007039087A2 (en) 2005-09-19 2006-09-19 Method and circuitry to generate a reference current for reading a memory cell, and device implementing same

Country Status (5)

Country Link
US (2) US7355916B2 (en)
EP (1) EP1927111B1 (en)
AT (1) ATE433186T1 (en)
DE (1) DE602006007155D1 (en)
WO (1) WO2007039087A2 (en)

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