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    參數(shù)資料
    型號: M34250M2-086FP
    廠商: Mitsubishi Electric Corporation
    英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
    中文描述: 單芯片4位微機的CMOS
    文件頁數(shù): 25/58頁
    文件大?。?/td> 331K
    代理商: M34250M2-086FP
    MITSUBISHI
    ELECTRIC
    25
    MITSUBISHI MICROCOMPUTERS
    4250 Group
    SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
    Fig. 22 Power-on reset circuit example
    (2) Internal state at reset
    Table 11 shows port state at reset, and Figure 23 shows
    internal state at reset (they are retained after system is released
    from reset).
    Table 11 Port state at reset
    Name
    D
    0
    , D
    1
    , D
    2
    /C, D
    3
    /K
    S
    0
    –S
    3
    G
    0
    /INT, G
    1
    /T
    OUT
    G
    2
    , G
    3
    F
    0
    , F
    1
    Note: Output latch is set to “1.”
    The contents of timers, registers, flags and RAM except shown
    in Figure 23 are undefined, so set the initial value to them.
    State
    High impedance
    (Note)
    Function
    D
    0
    , D
    1
    , D
    2
    /C, D
    3
    /K
    S
    0
    –S
    3
    G
    0
    /INT, G
    1
    G
    2
    , G
    3
    F
    0
    , F
    1
    (1) Power-on reset
    Reset can be automatically performed at power on (power-on
    reset) by connecting a resistor, a diode, and a capacitor to
    RESET
    pin. Connect
    RESET
    pin and the external circuit at the
    shortest distance.
    V
    DD
    V
    DD
    RESET pin voltage
    Internal reset signal
    Power-on
    RESET
    pin
    This symbol represents a parasitic diode.
    Note: Applied potential to RESET pin
    must be 7 V or less.
    Internal reset
    signal
    Reset state
    Reset released
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