• 參數(shù)資料
    型號(hào): 37C672
    廠商: SMSC Corporation
    英文描述: ENHANCED SUPER I/O CONTROLLER WITH FAST IR
    中文描述: 增強(qiáng)的超級(jí)I / O控制器,快速紅外線
    文件頁數(shù): 28/173頁
    文件大小: 965K
    代理商: 37C672
    APPLICATION
    2.6 Processor mode
    2-66
    3802 GROUP USER’S MANUAL
    Figure 2.6.4, Figure 2.6.5 and Figure 2.6.6 show a standard timing at 8 MHz (No-Wait).
    Fig. 2.6.4 Read-cycle (OE access, SRAM)
    Fig. 2.6.5 Read-cycle (OE access, EPROM)
    Output enabled access time of M5M5256BP
    Data bus setup time before RD of 3802
    td(AH – RD)
    RD pulse width of 3802
    RD delay time after outputting address of 3802
    50 ns (max)
    65 ns (min)
    Address (low-order)
    A0–A7
    (Port P0)
    Address (high-order)
    A8–A14
    (Port P1)
    ,,,,,,,
    Data
    DQ1–DQ8
    (Port P2)
    S
    (A15)
    WR
    “H ”
    “”
    level
    125 ns - 10 ns (min)
    125 ns - 35 ns (min)
    OE
    (RD of 3802)
    td(AH – RD)
    tWL(RD)
    ta(OE)
    tsu(DB – RD)
    :
    tWL(RD)
    :
    ta(OE)
    :
    tsu(DB – RD)
    : RD delay time after outputting address of 3802
    : Output enabled access time of M5M27C256AK
    : Data bus setup time before RD of 3802
    50 ns (max)
    65 ns (min)
    Address (low-order)
    A0–A7
    (Port P0)
    Address (high-order)
    A8–A14
    (Port P1)
    ,,,,,,,
    Data
    D0–D7
    (Port P2)
    WR
    H
    level
    CE
    5.8 ns (max)
    tPHL
    125 ns - 10ns (min)
    125 ns - 35 ns (min)
    OE
    (RD of 3802)
    td(AH – RD)
    tWL(RD)
    ta(OE)
    tsu(DB – RD)
    : RD pulse width of 3802
    ta(OE)
    td(AH – RD)
    tWL(RD)
    tsu(DB – RD)
    tPHL
    Output delay time of 74F04
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