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  2. 參數(shù)資料
    型號: MPC875CVR66
    廠商: Freescale Semiconductor
    文件頁數(shù): 13/84頁
    文件大?。?/td> 0K
    描述: IC MPU POWERQUICC 66MHZ 256PBGA
    標(biāo)準(zhǔn)包裝: 60
    系列: MPC8xx
    處理器類型: 32-位 MPC8xx PowerQUICC
    速度: 66MHz
    電壓: 3.3V
    安裝類型: 表面貼裝
    封裝/外殼: 256-BGA
    供應(yīng)商設(shè)備封裝: 256-PBGA(23x23)
    包裝: 托盤
    MPC875/MPC870 PowerQUICC Hardware Specifications, Rev. 4
    20
    Freescale Semiconductor
    Bus Signal Timing
    B25
    CLKOUT rising edge to OE,
    WE(0:3)/BS_B[0:3] asserted
    (MAX = 0.00
    × B1 + 9.00)
    9.00
    9.00
    ns
    B26
    CLKOUT rising edge to OE negated
    (MAX = 0.00
    × B1 + 9.00)
    2.00
    9.00
    2.00
    9.00
    2.00
    9.00
    2.00
    9.00
    ns
    B27
    A(0:31) and BADDR(28:30) to CS asserted
    GPCM ACS = 10, TRLX = 1
    (MIN = 1.25
    × B1 – 2.00)
    35.90
    29.30
    16.90
    13.60
    ns
    B27a
    A(0:31) and BADDR(28:30) to CS asserted
    GPCM ACS = 11, TRLX = 1
    (MIN = 1.50
    × B1 – 2.00)
    43.50
    35.50
    20.70
    16.75
    ns
    B28
    CLKOUT rising edge to WE(0:3)/BS_B[0:3]
    negated GPCM write access CSNT = 0
    (MAX = 0.00
    × B1 + 9.00)
    9.00
    9.00
    9.00
    9.00
    ns
    B28a
    CLKOUT falling edge to WE(0:3)/BS_B[0:3]
    negated GPCM write access TRLX = 0,
    CSNT = 1, EBDF = 0
    (MAX = 0.25
    × B1 + 6.80)
    7.60
    14.30
    6.30
    13.00
    3.80
    10.50
    3.13
    9.93
    ns
    B28b
    CLKOUT falling edge to CS negated GPCM
    write access TRLX = 0, CSNT = 1 ACS = 10 or
    ACS = 11, EBDF = 0
    (MAX = 0.25
    × B1 + 6.80)
    14.30
    13.00
    10.50
    9.93
    ns
    B28c
    CLKOUT falling edge to WE(0:3)/BS_B[0:3]
    negated GPCM write access TRLX = 0,
    CSNT = 1 write access TRLX = 0, CSNT = 1,
    EBDF = 1 (MAX = 0.375
    × B1 + 6.6)
    10.90
    18.00
    10.90
    18.00
    5.20
    12.30
    4.69
    11.29
    ns
    B28d
    CLKOUT falling edge to CS negated GPCM
    write access TRLX = 0, CSNT = 1, ACS = 10
    or ACS = 11, EBDF = 1
    (MAX = 0.375
    × B1 + 6.6)
    18.00
    18.00
    12.30
    11.30
    ns
    B29
    WE(0:3)/BS_B[0:3] negated to D(0:31) High-Z
    GPCM write access, CSNT = 0, EBDF = 0
    (MIN = 0.25
    × B1 – 2.00)
    5.60
    4.30
    1.80
    1.13
    ns
    B29a
    WE(0:3)/BS_B[0:3] negated to D(0:31) High-Z
    GPCM write access, TRLX = 0, CSNT = 1,
    EBDF = 0 (MIN = 0.50
    × B1 – 2.00)
    13.20
    10.50
    5.60
    4.25
    ns
    B29b
    CS negated to D(0:31) High-Z GPCM write
    access, ACS = 00, TRLX = 0 and CSNT = 0
    (MIN = 0.25
    × B1 – 2.00)
    5.60
    4.30
    1.80
    1.13
    ns
    B29c
    CS negated to D(0:31) High-Z GPCM write
    access, TRLX = 0, CSNT = 1, ACS = 10 or
    ACS = 11, EBDF = 0 (MIN = 0.50
    × B1 – 2.00)
    13.20
    10.50
    5.60
    4.25
    ns
    Table 10. Bus Operation Timings (continued)
    Num
    Characteristic
    33 MHz
    40 MHz
    66 MHz
    80 MHz
    Unit
    Min
    Max
    Min
    Max
    Min
    Max
    Min
    Max
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