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    參數(shù)資料
    型號: TMS370C686AYYZ
    英文描述: Microcontroller
    中文描述: 微控制器
    文件頁數(shù): 40/48頁
    文件大?。?/td> 711K
    代理商: TMS370C686AYYZ
    TMS370Cx36
    8-BIT MICROCONTROLLER
    SPNS039B – JANUARY 1996 – REVISED FEBRUARY 1997
    40
    POST OFFICE BOX 1443
    HOUSTON, TEXAS 77251–1443
    external clocking requirements for clock divided by 4 (see Note 9 and Figure 16)
    NO.
    PARAMETER
    MIN
    MAX
    UNIT
    1
    tw(Cl)
    tr(Cl)
    tf(CI)
    td(CIH-SCL)
    CLKIN
    Pulse duration, XTAL2/CLKIN (see Note 10)
    20
    ns
    2
    Rise time, XTAL2/CLKIN
    30
    ns
    3
    Fall time, XTAL2/CLKIN
    30
    ns
    4
    Delay time, XTAL2/CLKIN rise to SYSCLK fall
    100
    ns
    Crystal operating frequency
    Internal system clock operating frequency
    2
    20
    MHz
    SYSCLK
    0.5
    5
    MHz
    SYSCLK = CLKIN/4
    NOTES:
    9. For VIL and VIH, refer to recommended operating conditions.
    10. This pulse may be either a high pulse, as illustrated below, which extends from the earliest valid high to the final valid high in an
    XTAL2/CLKIN cycle or a low pulse, which extends from the earliest valid low to the final valid low in an XTAL2/CLKIN cycle.
    XTAL2/CLKIN
    3
    2
    1
    4
    SYSCLK
    Figure 16. External Clock Timing for Divide-by-4
    external clocking requirements for clock divided by 1 (PLL) (see Note 9 and Figure 17)
    NO.
    1
    PARAMETER
    MIN
    20
    MAX
    UNIT
    ns
    tw(Cl)
    tr(Cl)
    tf(CI)
    td(CIH-SCH)
    CLKIN
    Pulse duration, XTAL2/CLKIN (see Note 10)
    2
    Rise time, XTAL2/CLKIN
    30
    ns
    3
    Fall time, XTAL2/CLKIN
    30
    ns
    4
    Delay time, XTAL2/CLKIN rise to SYSCLK rise
    100
    ns
    Crystal operating frequency
    Internal system clock operating frequency
    2
    5
    MHz
    SYSCLK
    2
    5
    MHz
    SYSCLK = CLKIN/1
    NOTES:
    9. For VIL and VIH, refer to recommended operating conditions.
    10. This pulse can be either a high pulse, as illustrated below, which extends from the earliest valid high to the final valid high in an
    XTAL2/CLKIN cycle or a low pulse, which extends from the earliest valid low to the final valid low in an XTAL2/CLKIN cycle.
    4
    3
    2
    1
    XTAL2/CLKIN
    SYSCLK
    Figure 17. External Clock Timing for Divide-by-1
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