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    Part number
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    1. Home/
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    3. Memory ICs/
    4. Storage/
    5. 25CS640-E/ST Microchip

    25CS640-E/ST [Microchip]

    25CS640-E/ST
    25CS640-E/ST

    Part No:

    25CS640-E/ST

    Category:

    Storage

    Manufacturer:

    Microchip

    Description:

    The 25CS640 provides 64Kbits of Serial EEPROM utilizing the Serial Peripheral Interface (SPI) compatible bus. The device is organized as 8,192 bytes of 8 bits each and is optimized for use in consumer, industrial and automotive applications where reliable and dependable nonvolatile memory storage is essential.

    Stock Status:

    Available for RFQ

    Pricing:

    Request Volume Pricing

    Quote Response:

    Within 24 Hours

    Shipping:

    In-stock parts ship in 1–2 business days

    Specification

    Type
    Product FAQ

    1. Is 25CS640-E/ST available for RFQ?

    Yes. 25CS640-E/ST by Microchip is available for RFQ. Submit your required quantity and our team will confirm real-time stock, lead time, and volume pricing.

    2. Why is there no fixed price for 25CS640-E/ST?

    Pricing for 25CS640-E/ST can vary by order quantity, market availability, date code, packaging, and delivery destination. Request a quote to receive the latest volume pricing.

    3. What are the key specifications of 25CS640-E/ST?

    25CS640-E/ST is a Microchip Storage with Operating Temperature: -40°C ~ +150°C and Absolute Max Voltage: 6.25V. Review the product details or submit an RFQ if you need confirmation before purchase.

    4. How fast can I get a quote for 25CS640-E/ST?

    Our sales team usually responds within 24 hours after receiving your RFQ. The quote may include stock status, unit price, lead time, shipping options, and available alternatives.

    5. How soon can 25CS640-E/ST be shipped?

    If stock is confirmed, in-stock parts can usually ship within 1–2 business days. Final lead time depends on quantity, stock source, and delivery destination.

    6. Can you suggest alternatives to 25CS640-E/ST?

    Yes. If 25CS640-E/ST is unavailable, obsolete, or does not meet your required lead time, we can help check similar Microchip Storage parts or compatible alternatives.

    RFQ

    Part Number:

    25CS640-E/ST

    Manufacturer:

    Microchip

    Looking for Pricing? Contact us for volume pricing.

    IMPORTANT NOTICE

    Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

    Featured Product
    Parameter
    ESD Protection
    >4000V
    Data Retention
    >200 years
    Write Cycle Time
    4ms
    Standby Current
    1.0µA
    Clock Frequency
    20MHz
    Supply Voltage
    1.7V ~ 5.5V
    Operating Temperature
    -40°C ~ +150°C
    Package
    8-Lead MSOP, 8-Lead SOIC, 8-Lead TSSOP, 8-Pad UDFN, 8-Pad Wettable Flanks VDFN
    Absolute Max Voltage
    6.25V
    Ecc
    1-bit per 4-byte
    Memory Size
    64 Kbit (8192 x 8)
    Page Size
    32 bytes
    Read Current
    3.0mA
    Serial Number
    128-bit
    User Programmable Id
    32 bytes
    Uvlo Max
    4.8V
    Uvlo Min
    1.4V
    Write Current
    5.0mA
    Write Cycles
    >4 million

    Products Detail

    The 25CS640 is a 64-Kbit SPI serial EEPROM organized as 8,192 x 8 bits. It features a configurable write protection scheme (Legacy or Enhanced mode), a security register with factory-programmed 128-bit serial number and user-programmable 32-byte ID page, built-in ECC for reliability, undervoltage lockout detection, and JEDEC SPI Manufacturer Read ID support. It operates from 1.7V to 5.5V with high-speed clock frequencies up to 20MHz, offers low-power consumption, and is AEC-Q100 qualified for automotive applications.

    Key Features

    • 64-Kbit EEPROM (8,192x8), 32-byte page size
    • Backward compatible with 25AA640A/25LC640A and AT25C640B
    • Security register with 128-bit serial number and 32-byte user-programmable ID
    • Built-in ECC
    • Undervoltage lockout
    • JEDEC SPI ID support
    • High-speed clock (20MHz/10MHz/5MHz)
    • Legacy and Enhanced write protection modes
    • Low-power (1.7V-5.5V, 5mA write, 3mA read, 1µA standby)
    • High reliability (4M cycles, 200-year retention, >4kV ESD)
    • Temperature ranges: Industrial (-40°C to +85°C), Extended (-40°C to +125°C), Extended (-40°C to +150°C)
    • AEC-Q100 qualified

    Application scenarios

    • Consumer electronics
    • industrial control
    • automotive
    Shipping & Warranty

    Fast Dispatch: Ships in 5-7 days(in-stock parts within 1-2 days)

    Unishop Global Export: 1-7 days, $40.00

    Guaranteed Delivery: Door-to-door in 30 days

    Compliant Worldwide Shipping: DHL, FedEx, SF, and UPS.

    Feature

    • 30-Day Guarantee
      30-Day Guarantee
    • Fasted Delivery
      Fasted Delivery
    • Hassle-Free Returns
      Hassle-Free Returns
    • Secure payment method
      Secure payment method

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