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  • 參數(shù)資料
    型號: ST901T
    廠商: 意法半導(dǎo)體
    英文描述: HIGH VOLTAGE IGNITION COIL DRIVER NPN POWER DARLINGTON
    中文描述: 高壓點火線圈驅(qū)動達林頓NPN電源
    文件頁數(shù): 176/199頁
    文件大?。?/td> 2813K
    代理商: ST901T
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    ST90158 - EIGHT-CHANNEL ANALOG TO DIGITAL CONVERTER (A/D)
    ANALOG TO DIGITAL CONVERTER
    (Cont’d)
    CONTROL LOGIC REGISTER (CLR)
    The Control Logic Register (CLR) manages the
    A/D converter logic. Writing to this register will
    cause the current conversion to be aborted and
    the autoscan logic to be re-initialized.
    CONTROL LOGIC REGISTER (CLR)
    R253
    - Read/Write
    Register Page: 63
    Reset Value: 0000 0000 (00h)
    7
    Bit 7:5 =
    SC[2:0]:
    Start Conversion Address
    .
    These 3 bits define the starting analog input chan-
    nel (Autoscan mode). The first channel addressed
    by SC[2:0] is converted, then the channel number
    is incremented for the successive conversion, until
    channel 7 (111) is converted. When SC2, SC1 and
    SC0 are all set, only channel 7 will be converted.
    Bit 4 =
    EXTG
    :
    External Trigger Enable
    .
    This bit is set and cleared by software.
    0: External trigger disabled.
    1: External trigger enabled. Allows a conversion
    sequence to be started on the subsequent edge
    of the external signal applied to the EXTRG pin
    (when enabled as an Alternate Function).
    Bit 3 =
    INTG
    :
    Internal Trigger Enable
    .
    This bit is set and cleared by software.
    0: Internal trigger disabled.
    1: Internal trigger enabled. Allows a conversion se-
    quence to be started, synchronized by an inter-
    nal signal (On-chip Event signal) from a Multi-
    function Timer peripheral.
    Both External and Internal Trigger inputs are inter-
    nally ORed, thus avoiding Hardware conflicts;
    however, the correct procedure is to enable only
    one alternate synchronization input at a time.
    Note:
    The effect of either synchronization mode is
    to set the START/STOP bit, which is reset by hard-
    ware when in SINGLE mode, at the end of each
    sequence of conversions.
    Requirements: The External Synchronisation In-
    put must receive a low level pulse longer than an
    INTCLK period and, for both External and On-Chip
    Event synchronisation, the repetition period must
    be greater than the time required for the selected
    sequence of conversions.
    Bit 2 =
    POW
    :
    Power Up/Power Down.
    This bit is set and cleared by software.
    0: Power down mode: all power-consuming logic is
    disabled, thus selecting a low power idle mode.
    1: Power up mode: the A/D converter logic and an-
    alog circuitry is enabled.
    Bit 1 =
    CONT
    :
    Continuous/Single
    .
    0: Single Mode: a single sequence of conversions
    is initiated whenever an external (or internal)
    trigger occurs, or when the ST bit is set by soft-
    ware.
    1: Continuous Mode: the first sequence of conver-
    sions is started, either by software (by setting
    the ST bit), or by hardware (on an internal or ex-
    ternal trigger, depending on the setting of the
    INTG and EXTG bits); a continuous conversion
    sequence is then initiated.
    Bit 0 =
    ST
    :
    Start/Stop.
    0: Stop conversion. When the A/D converter is
    running in Single Mode, this bit is hardware re-
    set at the end of a sequence of conversions.
    1: Start a sequence of conversions.
    0
    SC2
    SC1
    SC0
    EXT
    G
    INTG POW
    CON
    T
    ST
    9
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