參數(shù)資料
    型號: TMS370C642ANA
    元件分類: 8位微控制器
    英文描述: 8-BIT MICROCONTROLLER
    中文描述: 8位微控制器
    文件頁數(shù): 38/48頁
    文件大?。?/td> 711K
    代理商: TMS370C642ANA
    TMS370Cx36
    8-BIT MICROCONTROLLER
    SPNS039B – JANUARY 1996 – REVISED FEBRUARY 1997
    38
    POST OFFICE BOX 1443
    HOUSTON, TEXAS 77251–1443
    External
    Clock Signal
    XTAL1
    XTAL2/CLKIN
    C2
    (see Note A)
    C1
    (see Note A)
    Crystal/Ceramic
    Resonator
    (see Note B)
    XTAL1
    XTAL2/CLKIN
    C3
    (see Note A)
    NOTES: A. The values of C1 and C2 are typically 15 pF and C3 value is typically 50 pF. See the manufacturer’s recommendations for ceramic
    resonators.
    B. The crystal/ceramic resonator frequency is four times the reciprocal of the system clock period.
    Figure 11.
    Recommended Crystal/Clock Connections
    1.2 k
    20 pF
    VO
    Load Voltage
    Case 1: VO = VOH = 2.4 V; Load Voltage = 0 V
    Case 2: VO = VOL = 0.4 V; Load Voltage = 2.1 V
    NOTE A: All measurements are made with the pin loading as shown unless otherwise noted. All measurements are made with XTAL2/CLKIN
    driven by an external square wave signal with a 50% duty cycle and rise and fall times less than 10 ns unless otherwise stated.
    Figure 12. Typical Output Load Circuit (See Note A)
    VCC
    GND
    300
    20
    I/O
    Pin Data
    Output
    Enable
    VCC
    GND
    INT1
    6 k
    20
    30
    Figure 13. Typical Buffer Circuitry
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