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  • 參數(shù)資料
    型號: MC8641DVU1333HB
    廠商: FREESCALE SEMICONDUCTOR INC
    元件分類: 微控制器/微處理器
    英文描述: MICROPROCESSOR, CBGA1023
    封裝: 33 X 33 MM, ROHS COMPLIANT, CERAMIC, BGA-1023
    文件頁數(shù): 58/140頁
    文件大?。?/td> 1484K
    代理商: MC8641DVU1333HB
    MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 0
    24
    Freescale Semiconductor
    DDR and DDR2 SDRAM
    6.2.2
    DDR SDRAM Output AC Timing Specifications
    Table 21. DDR SDRAM Output AC Timing Specifications
    At recommended operating conditions.
    Parameter
    Symbol 1
    Min
    Max
    Unit
    Notes
    MCK[n] cycle time, MCK[n]/MCK[n] crossing
    tMCK
    310
    ns
    2
    MCK duty cycle
    600 MHz
    533 MHz
    400 MHz
    tMCKH/tMCK
    47.5
    47
    52.5
    53
    %
    8
    9
    ADDR/CMD output setup with respect to MCK
    tDDKHAS
    ns
    3
    600 MHz
    1.10
    7
    533 MHz
    1.48
    7
    400 MHz
    1.95
    ADDR/CMD output hold with respect to MCK
    tDDKHAX
    ns
    3
    600 MHz
    1.10
    7
    533 MHz
    1.48
    7
    400 MHz
    1.95
    MCS[n] output setup with respect to MCK
    tDDKHCS
    ns
    3
    600 MHz
    1.10
    7
    533 MHz
    1.48
    7
    400 MHz
    1.95
    MCS[n] output hold with respect to MCK
    tDDKHCX
    ns
    3
    600 MHz
    1.10
    7
    533 MHz
    1.48
    7
    400 MHz
    1.95
    MCK to MDQS Skew
    tDDKHMH
    –0.6
    0.6
    ns
    4
    MDQ/MECC/MDM output setup with respect
    to MDQS
    tDDKHDS,
    tDDKLDS
    ps
    5
    600 MHz
    500
    7
    533 MHz
    590
    7
    400 MHz
    700
    MDQ/MECC/MDM output hold with respect to
    MDQS
    tDDKHDX,
    tDDKLDX
    ps
    5
    600 MHz
    500
    7
    533 MHz
    590
    7
    400 MHz
    700
    MDQS preamble start
    tDDKHMP
    –0.5
    × tMCK – 0.6 –0.5 × tMCK +0.6
    ns
    6
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