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    參數(shù)資料
    型號(hào)： S29GL032A100BFI012
    廠商： Spansion Inc.
    英文描述： 64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    中文描述： 64兆，32兆和16兆位3.0伏只頁(yè)面模式閃存，含有200納米MirrorBit工藝技術(shù)
    文件頁(yè)數(shù)： 47/95頁(yè)
    文件大小： 2389K
    代理商： S29GL032A100BFI012
    September 10, 2007 S29GL-A_00_A11
    S29GL-A
    47
    D a t a
    S h e e t
    7.11
    Secured Silicon Sector Flash Memory Region
    The Secured Silicon Sector feature provides a Flash memory region that enables permanent part
    identification through an Electronic Serial Number (ESN). The Secured Silicon Sector is 256 bytes in length,
    and uses a Secured Silicon Sector Indicator Bit (DQ7) to indicate whether or not the Secured Silicon Sector is
    locked when shipped from the factory. This bit is permanently set at the factory and cannot be changed,
    which prevents cloning of a factory locked part. This ensures the security of the ESN once the product is
    shipped to the field.
    The factory offers the device with the Secured Silicon Sector either customer lockable (standard shipping
    option) or factory locked (contact a Spansion sales representative for ordering information). The customer-
    lockable version is shipped with the Secured Silicon Sector unprotected, allowing customers to program the
    sector after receiving the device. The customer-lockable version also contains the Secured Silicon Sector
    Indicator Bit permanently set to a
    0
    . The factory-locked version is always protected when shipped from the
    factory, and has the Secured Silicon Sector Indicator Bit permanently set to a
    1
    . Thus, the Secured Silicon
    Sector Indicator Bit prevents customer-lockable devices from being used to replace devices that are factory
    locked.
    Note that the ACC function and unlock bypass modes are not available when the Secured Silicon
    Sector is enabled.
    The Secured Silicon sector address space in this device is allocated as follows:
    The system accesses the Secured Silicon Sector through a command sequence (see
    Write Protect (WP#)
    on page 48
    ). After the system writes the Enter Secured Silicon Sector command sequence, it may read the
    Secured Silicon Sector by using the addresses normally occupied by the first sector (SA0). This mode of
    operation continues until the system issues the Exit Secured Silicon Sector command sequence, or until
    power is removed from the device. On power-up, or following a hardware reset, the device reverts to sending
    commands to sector SA0.
    7.11.1
    Customer Lockable: Secured Silicon Sector NOT Programmed or Protected
    At the Factory
    Unless otherwise specified, the device is shipped such that the customer may program and protect the 256-
    byte Secured Silicon sector.
    The system may program the Secured Silicon Sector using the write-buffer, accelerated and/or unlock
    bypass methods, in addition to the standard programming command sequence. See
    Command Definitions
    on page 52
    .
    Programming and protecting the Secured Silicon Sector must be used with caution since, once protected,
    there is no procedure available for unprotecting the Secured Silicon Sector area and none of the bits in the
    Secured Silicon Sector memory space can be modified in any way.
    The Secured Silicon Sector area can be protected using one of the following procedures:
    Write the three-cycle Enter Secured Silicon Sector Region command sequence, and then follow the in-
    system sector protect algorithm as shown in
    Figure 7.2 on page 46
    , except that
    RESET# may be at either
    V
    IH
    or V
    ID
    . This allows in-system protection of the Secured Silicon Sector without raising any device pin to
    a high voltage. Note that this method is only applicable to the Secured Silicon Sector.
    Write the three-cycle Enter Secured Silicon Sector Region command sequence, and then use the alternate
    method of sector protection described in
    Sector Group Protection and Unprotection
    on page 41
    .
    Once the Secured Silicon Sector is programmed, locked and verified, the system must write the Exit Secured
    Silicon Sector Region command sequence to return to reading and writing within the remainder of the array.
    Secured Silicon Sector
    Address Range
    Standard Factory
    Locked
    ExpressFlash
    Factory Locked
    Customer
    Lockable
    x16
    x8
    000000h–000007h
    000000h-00000Fh
    ESN
    ESN or determined
    by customer
    Determined by
    customer
    000008h–00007Fh
    000010h-0000FFh
    Unavailable
    Determined by
    customer
    相關(guān)PDF資料
    PDF描述
    S29GL032A100BFI013 64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    S29GL032A100BFIR10 64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    S29GL032A100BFIR12 64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    S29GL032A100BFIR13 64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    S29GL032A100BFIR20 64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    S29GL032A100BFI013 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    S29GL032A100BFIR10 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    S29GL032A100BFIR12 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    S29GL032A100BFIR13 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
    S29GL032A100BFIR20 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:64 Megabit, 32 Megabit, and 16 Megabit 3.0-Volt only Page Mode Flash Memory Featuring 200 nm MirrorBit Process Technology
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