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    參數(shù)資料
    型號: D80C54-2
    廠商: INTEL CORP
    元件分類: 微控制器/微處理器
    英文描述: CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
    中文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CDIP40
    封裝: CERDIP-40
    文件頁數(shù): 20/23頁
    文件大小: 319K
    代理商: D80C54-2
    8XC52/54/58
    272336–21
    *
    See Table 4 for proper input on these pins
    Figure 10. Programming the EPROM
    PROGRAMMING ALGORITHM
    Refer to Table 4 and Figures 10 and 11 for address,
    data, and control signals set up. To program the
    87C5X the following sequence must be exercised.
    1. Input the valid address on the address lines.
    2. Input the appropriate data byte on the data
    lines.
    3. Activate the correct combination of control sig-
    nals.
    4. Raise EA/V
    PP
    from V
    CC
    to 12.75V
    g
    0.25V.
    5. Pulse ALE/PROG 5 times for the EPROM ar-
    ray, and 25 times for the encryption table and
    the lock bits.
    Repeat 1 through 5 changing the address and data
    for the entire array or until the end of the object file is
    reached.
    PROGRAM VERIFY
    Program verify may be done after each byte or block
    of bytes is programmed. In either case a complete
    verify of the programmed array will ensure reliable
    programming of the 87C5X.
    The lock bits cannot be directly verified. Verification
    of the lock bits is done by observing that their fea-
    tures are enabled.
    272336–22
    Figure 11. Programming Signal’s Waveforms
    20
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