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  • 參數(shù)資料
    型號: TMS370C642FNL
    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): 24/48頁
    文件大?。?/td> 711K
    代理商: TMS370C642FNL
    TMS370Cx36
    8-BIT MICROCONTROLLER
    SPNS039B – JANUARY 1996 – REVISED FEBRUARY 1997
    24
    POST OFFICE BOX 1443
    HOUSTON, TEXAS 77251–1443
    analog-to-digital converter 1 module
    The analog-to-digital converter 1 (ADC1) module is an 8-bit, successive approximation converter with internal
    sample-and-hold circuitry. The module has four multiplexed analog input channels that allow the processor to
    convert the voltage levels from up to eight different sources. The ADC1 module features include the following:
    Minimum conversion time: 32.8
    μ
    s at 5-MHz SYSCLK
    Ten external pins:
    Eight analog-input channels (AN0–AN7), any of which can be software-configured as digital inputs
    (E0–E7) when not needed as analog channels
    AN1–AN7 also can be configured as positive-input voltage reference.
    V
    CC3
    : ADC1 module high-voltage reference input
    V
    SS3
    : ADC1 module low-voltage reference input
    The ADDATA register, which contains the digital result of the last ADC1 conversion.
    ADC1 operations can be accomplished through either interrupt-driven or polled algorithms.
    Six ADC1 module control registers located in the control-register frame beginning at address 1070h
    The ADC1 module control registers are listed in Table 15.
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    P07E
    á
    BIT 7
    á
    P07D
    Port E Input Enable Register
    AD
    BIT 6
    BIT 5
    SELECT2
    BIT 4
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    BIT 3
    REF VOLT
    SELECT0
    BIT 2
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    BIT 1
    AD INPUT
    SELECT1
    BIT 0
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    REG
    ADDATA
    ADENA
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    P070
    PF
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    P07C
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    ADCTL
    CONVERT
    á
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    REF VOLT
    á
    ááá
    REF VOLT
    á
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    AD INPUT
    á
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    á
    ADIN
    áá
    á
    áá
    P073
    á
    á
    Port E Data Input Register
    áá
    P07F
    AD STEST
    AD ESPEN
    P071
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    FLAG
    á
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    ENA
    á
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    ADSTAT
    to
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    ADPRI
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