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  • 參數(shù)資料
    型號(hào): AM29F040B-55PI
    廠商: Advanced Micro Devices, Inc.
    英文描述: 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
    中文描述: 4兆位(512畝× 8位)的CMOS 5.0伏只,統(tǒng)一部門快閃記憶體
    文件頁(yè)數(shù): 15/36頁(yè)
    文件大?。?/td> 534K
    代理商: AM29F040B-55PI
    November 1, 2006 21445E5
    Am29F040B
    13
    D A T A S H E E T
    Command Definitions
    Table 4. Am29F040B Command Definitions
    Legend:
    X = Don’t care
    RA = Address of the memory location to be read.
    RD = Data read from location RA during read operation.
    PA = Address of the memory location to be programmed.
    Addresses latch on the falling edge of the WE# or CE# pulse,
    whichever happens later.
    PD = Data to be programmed at location PA. Data latches on the
    rising edge of WE# or CE# pulse, whichever happens first.
    SA = Address of the sector to be verified (in autoselect mode) or
    erased. Address bits A18–A16 select a unique sector.
    Notes:
    1. See Table 1 for description of bus operations.
    2. All values are in hexadecimal.
    3. Except when reading array or autoselect data, all bus cycles
    are write operations.
    4. Address bits A18–A11 are don’t cares for unlock and
    command cycles, unless SA or PA required.
    5. No unlock or command cycles required when reading array data.
    6. The Reset command is required to return to reading array
    data when device is in the autoselect mode, or if DQ5 goes
    high (while the device is providing status data).
    7. The fourth cycle of the autoselect command sequence is a
    read cycle.
    8. The data is 00h for an unprotected sector and 01h for a
    protected sector.See “Autoselect Command Sequence” for
    more information.
    9. The system may read and program in non-erasing sectors, or
    enter the autoselect mode, when in the Erase Suspend
    mode. The Erase Suspend command is valid only during a
    sector erase operation.
    10. The Erase Resume command is valid only during the Erase
    Suspend mode.
    Command
    Sequence
    ( Note 1)
    C
    Bus Cycles ( Notes 2– 4)
    First
    Second
    Third
    Fourth
    Fifth
    Sixth
    Addr
    Data
    Addr
    Data
    Addr
    Data
    Addr
    Data
    Addr
    Data
    Addr
    Data
    Read (Note 5)
    1
    RA
    RD
    Reset (Note 6)
    1
    XXX
    F0
    Autoselect
    (Note 7)
    Manufacturer ID
    4
    555
    AA
    2AA
    55
    555
    90
    X00
    01
    Device ID
    4
    555
    AA
    2AA
    55
    555
    90
    X01
    A4
    Sector Protect Verify
    (Note 8)
    4
    555
    AA
    2AA
    55
    555
    90
    SA
    X02
    00
    01
    Program
    4
    555
    AA
    2AA
    55
    555
    A0
    PA
    PD
    Chip Erase
    6
    555
    AA
    2AA
    55
    555
    80
    555
    AA
    2AA
    55
    555
    10
    Sector Erase
    6
    555
    AA
    2AA
    55
    555
    80
    555
    AA
    2AA
    55
    SA
    30
    Erase Suspend (Note 9)
    1
    XXX
    B0
    Erase Resume (Note 10)
    1
    XXX
    30
    相關(guān)PDF資料
    PDF描述
    AM29F040B-55PK 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
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