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  • 參數(shù)資料
    型號: MC68HC05J1
    廠商: Motorola, Inc.
    英文描述: HCMOS MICROCONTROLLER UNIT
    中文描述: HCMOS微控制器
    文件頁數(shù): 48/82頁
    文件大小: 327K
    代理商: MC68HC05J1
    MOTOROLA
    8-2
    BOOTLOADER MODE
    MC68HC705J2
    Rev. 2
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    Figure 8-1. Bootloader Circuit
    The bootloader function begins when a rising edge occurs on theRESET pin while
    the IRQ/V
    PP
    pin is at V
    PP
    , the PB1 pin is at logical one, and the PB0 pin is
    grounded.
    The PB2 pin selects the bootloader function, as the following table shows.
    Table 8-1. Bootloader Function Selection
    PB2
    1
    0
    Bootloader Function
    Program and Verify
    Verify
    10
    3
    4
    9
    18
    17
    16
    15
    14
    13
    12
    11
    OSC1
    OSC2
    PA0
    PA1
    PA2
    PA3
    PA4
    PA5
    PA6
    PA7
    RESET
    1 μF
    4 MHz
    10 M
    15 pF
    15 pF
    VPP
    10 k
    VDD
    PB0
    PB1
    PB2
    PB3
    330
    330
    PROGRAM
    VERIFY
    PB5
    PB4
    10 k
    2764
    MC14040B
    A12
    D0
    D1
    D2
    D3
    D4
    D5
    D6
    D7
    CE
    OE
    A0
    A1
    A2
    A3
    A4
    A5
    A6
    A7
    A8
    A9
    A10
    A11
    Q1
    Q2
    Q3
    Q4
    Q5
    Q6
    Q7
    Q8
    Q9
    Q10
    Q11
    Q12
    RST
    CLK
    IRQ/VPP
    10 k
    10 k
    VSS
    1
    2
    3
    CONNECT 2 AND 3 FOR
    MC68HC705J2 NATIVE MODE.
    CONNECT 1 AND 2 FOR
    MC68HC05J1 EMULATION MODE.
    5
    6
    7
    8
    20
    2
    1
    19
    S2
    S1
    MC68JC705J2
    VDD
    VDD
    VDD
    VDD
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