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  • 參數(shù)資料
    型號: MC68HC705P6ACP
    廠商: MOTOROLA INC
    元件分類: 微控制器/微處理器
    英文描述: HCMOS Microcontroller Unit
    中文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
    封裝: PLASTIC, DIP-28
    文件頁數(shù): 84/130頁
    文件大小: 1541K
    代理商: MC68HC705P6ACP
    EPROM
    Advance Information
    MC68HC705P6A
    Rev. 2.0
    84
    EPROM
    MOTOROLA
    EPROM device should be positioned about one inch from the UV lamp.
    An erased EPROM byte will read as $00.
    10.4 EPROM Programming Sequence
    The bootloader software goes through a complete write cycle of the
    EPROM including the MOR. This is followed by a verify cycle which
    continually branches in a loop if an error is found. A sample routine to
    program a byte of EPROM is shown in
    Table 10-1
    .
    NOTE:
    To avoid damage to the MCU, V
    DD
    must be applied to the MCU before
    V
    PP
    .
    10.5 EPROM Registers
    Three registers are associated with the EPROM: the EPROM
    programming register (EPROG) and the two mask option registers
    (MOR). The EPROG register controls the actual programming of the
    EPROM bytes and the MOR. The MOR registers control the six mask
    options found on the ROM version of this MCU (MC68HC05P6), the
    EPROM security feature, and eight additional port A interrupt options.
    10.6 EPROM Programming Register (EPROG)
    This register is used to program the EPROM array. Only the ELAT and
    EPGM bits are available.
    Table 10-1
    shows the location of each bit in the
    EPROG register and the state of these bits coming out of reset. All the
    bits in the EPROG register are cleared by reset.
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    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
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