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AT25640B
DATA SHEET
(12/10/2016)

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AT25640B

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For product comparison, please consider: 25AA640A, 25LC640A
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The Microchip AT25640B is a 64 Kb Serial EEPROM utilizing the industry standard Serial Peripheral Interface (SPI) compatible serial bus. The device is organized as one block of 8192 x 8-bit and is optimized for use in consumer electronics, industrial, medical, and automotive applications where reliable and dependable nonvolatile memory storage is essential. Software write protection allows the user to protect ¼, ½, or the entire memory array. A hardware write protect pin is also provided, which additionally protects against inadvertent writes to the status register. The EEPROM is available in a variety of space-saving packaging options.

 

    Features

        • 8192 x 8-bit (64 Kbit)
        • Serial Peripheral Interface (SPI) Compatible
          • Supports SPI modes 0 and 3
          • Up to 20 MHz clock frequency
        • Self-Timed Erase and Write Cycles (5 ms max.)
        • Low Power Consumption
          • Read current: 6mA (Max) at 5 MHz
          • Write current: 6 mA (Max) at 5 MHz
          • Standby current: 6 μA (Max) at 1.8V, 10 μA (Max) at 5 V
        • Block Write Protection: Protect 1/4, 1/2 or Entire Array
        • More than 1 million erase/write cycles
        • Data retention 100 years
        • Temperature Ranges Available
        • Automotive Grade 1: -40°C to 125°C
        • Automotive Grade 2: -40°C to 105°C
        • Automotive Grade 3 / Industrial: -40°C to 85°C
        • Automotive AECQ-100 Qualified1
        • Factory Programming Available
        • Available in standard packages including 8-lead SOIC, and advanced packages including 8-lead TSSOP, 8-lead 2x3 DFN, and 8-ball VFBGA

        1Consult Automotive datasheet for device specification and ordering part number

    Parameter Name
    Value
    Density
    64 Kbit
    Op. Volt Range (V)
    1.8 to 5.5
    Max. Clock Freq.
    20 MHz
    Page Size (bytes)
    32
    Write Protect
    Quarter, Half, Whole Array
    Temp Range (°C)
    -40°C to +125°C
    Endurance
    1,000,000
    Bus Modes
    SPI
    Documentation
    Data Sheets
    12/10/2016
    885KB
    Data Sheets
    01/01/2015
    832KB
      Application Notes
     
     
     
    AppNote
    04/01/2013
    79KB
    AppNote
    06/01/2008
    108KB
    AppNote
    12/10/2016
    689KB
      Brochures
     
     
     
    Brochures
    04/01/2015
    1209KB
    Brochures
    12/01/2012
    478KB
    Brochures
    11/01/2013
    5255KB
    Brochures
    12/10/2016
    4660KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    AT25640B-MAHL-E
    8
    UDFN
    -40C to +85C
    T/R
    0.47
    0.46
    0.44
    0.41
    0.39
     
    AT25640B-MAHL-T
    8
    UDFN
    -40C to +85C
    T/R
    0.47
    0.46
    0.44
    0.41
    0.39
    AT25640B-SSHL-B
    8
    SOIC
    -40C to +85C
    TUBE
    0.41
    0.40
    0.38
    0.36
    0.34
    AT25640B-SSHL-T
    8
    SOIC
    -40C to +85C
    T/R
    0.41
    0.40
    0.38
    0.36
    0.34
     
    AT25640B-XHL-B
    8
    TSSOP
    -40C to +85C
    TUBE
    0.43
    0.42
    0.40
    0.38
    0.35
    AT25640B-XHLHX-T
    8
    TSSOP
    -40C to +85C
    T/R
    0.48
    0.46
    0.44
    0.42
    0.40
     
    AT25640B-XHL-T
    8
    TSSOP
    -40C to +85C
    T/R
    0.43
    0.42
    0.40
    0.38
    0.35
     

    ** Device not available to purchase online. Please contact a sales office for pricing information.
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    RoHS Information
    Part
    Number
    Device
    Weight
    Shipping
    Weight
    Lead
    Count
    Package
    Type
    Package
    Width
    Solder
    Composition
    JEDEC
    Indicator
    RoHS
     
    China
    EFUP
    AT25640B-SSHL-B
    0.075000
    0.163265
    8
    SOIC
    3.90mm(.150in)
    NiPdAu
    e4
    AT25640B-SSHL-B-899
    0.075000
    0.163265
    8
    SOIC
    3.90mm(.150in)
    NiPdAu
    e4
    AT25640B-SSHL-T
    0.075000
    0.250000
    8
    SOIC
    3.90mm(.150in)
    NiPdAu
    e4
    AT25640B-SSHL-T-537
    0.075000
    0.250000
    8
    SOIC
    3.90mm(.150in)
    NiPdAu
    e4
    AT25640B-SSHL-T-899
    0.075000
    0.250000
    8
    SOIC
    3.90mm(.150in)
    NiPdAu
    e4
    AT25640B-XHLHX-T
    0.035800
    0.199200
    8
    TSSOP
    4.4mm
    NiPdAu
    e4
    AT25640B-XHL-B
    0.035800
    0.190000
    8
    TSSOP
    4.4mm
    NiPdAu
    e4
    AT25640B-XHL-T
    0.035800
    0.199200
    8
    TSSOP
    4.4mm
    NiPdAu
    e4
    AT25640B-MAHL-T
    0.009600
    0.538600
    8
    UDFN
    2x3x0.6mm
    NiPdAu
    e4
    AT25640B-MAHL-E
    0.009600
    0.538600
    8
    UDFN
    2x3x0.6mm
    NiPdAu
    e4
    To see a complete listing of RoHS data for this device, please Click here
    Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.