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    參數(shù)資料
    型號: MC68HC11A8BCFN2
    廠商: MOTOROLA INC
    元件分類: 微控制器/微處理器
    英文描述: HCMOS Single-Chip Microcontroller
    中文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC52
    封裝: PLASTIC, LCC-52
    文件頁數(shù): 98/158頁
    文件大?。?/td> 776K
    代理商: MC68HC11A8BCFN2
    MOTOROLA
    9-18
    RESETS, INTERRUPTS, AND LOW POWER MODES
    MC68HC11A8
    TECHNICAL DATA
    9
    the actual recovery sequence differs depending on the state of the X bit. If the X bit is
    clear, the MCU starts up with the stacking sequence leading to normal service of the
    XIRQ request. If the X bit is set, then processing will continue with the instruction im-
    mediately following the STOP instruction and no XIRQ interrupt service routine is re-
    quested. A reset will always result in an exit from the STOP mode, and the start of
    MCU operation is determined by the reset vector.
    SYMBOLS:
    DATA
    I
    l/O
    Hl ADD
    LO ADD
    ADD/DATA =Low byte of the address multiplexed with data.
    OD
    =Open drain output, ( ) current output state.
    SS
    =Steady state, output pin stays in current state.
    SP-8
    =Address output during WAI period following WAI instruction, stack point-
    er value, at time of WAI, minus 8.
    !!!
    =XTAL is output but not normally usable for any output function beyond
    crystal drive.
    Since the oscillator is stopped in the STOP mode, a restart delay of 4064 clock cycle
    times may be required to allow oscillator stabilization. If the internal oscillator is being
    used, this delay is required; however, if a stable external oscillator is being used, a
    control bit in the OPTION register may be used (DLY = 0) to give a delay of four cycles.
    =Current data present.
    =Input pin, if ( ) associated then this is required input state.
    =Input/output pin, state determined by data direction register.
    =High byte of the address.
    =Low byte of the address.
    Table 9-7 Pin State Summary for RESET, STOP, and WAIT
    Pins
    Single Chip Modes
    RESET
    Expanded Modes
    WAIT
    WAIT
    STOP
    RESET
    STOP
    Output Only
    E
    XTAL!!!
    STRB/RW
    PA3-PA6
    PB0-PB7
    Input/Output
    RESET
    MODA/LIR
    MODB/V
    STBY
    STRA/AS
    PA7
    PC0-PC7
    PD0-PD5
    Input Only
    EXTAL
    IRQ
    XIRQ
    PA0-PA2
    PE0-PE7
    V
    RH
    -V
    RL
    Active E
    Active
    0
    0
    0
    Active E
    Active
    SS
    SS
    SS
    0
    1
    Active E
    Active
    1
    0
    Hl ADD
    Active E
    Active
    1
    SS
    Hl ADD
    0
    1
    1
    SS
    SS
    SS
    SS
    Hl ADD
    I (0)
    I (0)
    I
    I
    I (0)
    I (1)
    I
    I
    OD (1)
    l (V
    STBY
    )
    I (STRA)
    I/O
    I/O
    I/O
    OD (1)
    l (V
    STBY
    )
    I (STRA)
    I/O
    I/O
    I/O
    OD (1)
    l (V
    STBY
    )
    Active AS
    l/O
    OD (1)
    l (V
    STBY
    )
    0
    I/O
    LO ADD
    I/O
    I (MODB)
    I (STRA)
    I
    I
    I
    I (MODES)
    Active AS
    I
    ADD/DATA SP-8/DATA
    I
    I/O
    Input Clock or Connect to Crystal with XTAL
    Terminate Unused Inputs to V
    DD
    Terminate Unused Inputs to V
    DD
    Terminate Unused Inputs to V
    DD
    or V
    SS
    If Not Used, External Drive Not Required
    If Not Used, External Drive Not Required
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    相關(guān)代理商/技術(shù)參數(shù)
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