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  • 參數(shù)資料
    型號(hào): TMS370C456AFNA
    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): 21/48頁
    文件大?。?/td> 711K
    代理商: TMS370C456AFNA
    TMS370Cx36
    8-BIT MICROCONTROLLER
    SPNS039B – JANUARY 1996 – REVISED FEBRUARY 1997
    21
    POST OFFICE BOX 1443
    HOUSTON, TEXAS 77251–1443
    programmable acquisition and control timer (PACT) module (continued)
    The PACT module features include the following:
    Input-capture functions on up to six input pins (CP1 to CP6), depending on the mode selected:
    Mode A: CP1–2 are dedicated capture, CP3–6 are circular buffer capture, and CP6 is also an event pin.
    Mode B: CP1–4 are dedicated capture, CP5–6 are circular buffer capture, and CP6 is also an event pin.
    Multiple timer-driven outputs on eight pins (OP1 to OP8)
    Standard compare command: set or clear an output pin whenever the timer/counter is equal to a certain
    value
    Virtual timers: enable variations of the PWM’s period and provides periodic interrupts to the processor.
    Double event-compare command: comparisons of the 8-bit event counter with two event-compare
    values and the actions that can be performed are based on each value:
    Event-compare 1 matching the event counter: sets or resets the selected output pin (OP1–OP8),
    generates interrupt, and generates a 32-bit capture into the circular buffer.
    Event-compare 2 matching the event counter: sets or resets the selected output pin (OP1–OP8),
    generates interrupt, generates a 32-bit capture into the circular buffer, and resets the 20-bit default
    timer.
    Offset timer definition-time from last event:
    Generates an interrupt when the maximum event count is reached
    Stores the 16-bit virtual timer in the circular buffer on each event
    Stores the 20-bit default timer and 8-bit event counter in the circular buffer when the maximum
    event count is reached
    Resets the 20-bit hardware default timer when the maximum event count is reached.
    Conditional-compare command has a timer-compare value and an event-compare value.
    Generates an interrupt when the event-compare value equals the event counter and the
    timer-compare value equals the last defined timer
    Sets or clears one of the seven output pins (OP1–OP7) when the event compare value equals the
    event counter and the timer-compare value equals the last defined timer
    Baud rate timer definition: runs the mini-serial communications port built into the PACT module.
    Configurable timer overflow rates
    One 8-bit event counter driven by CP6
    Up to 20-bit timer capability
    Interaction between event counter and timer activity
    Register-based organization allowing direct access to timer parameters by the CPU
    18 independent interrupt vectors with two priority levels
    Integrated, configurable watchdog with selectable time-out period
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