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programming PIC16F84

Discussion in 'Electronic Basics' started by [email protected], Sep 7, 2006.

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  1. Guest


    i m new to programming PIC microcontrollers.......recently i built the
    JDM multi pic programmer and tried to program showing "verify failed
    at address 0000h" what might be the problem?? plz help me.........
  2. Byron A Jeff

    Byron A Jeff Guest

    What voltages do you have at the PIC programming socket for clock, data,
    and MCLR?

    JDMs often fail on modern PCs because few modern PCs actually generate
    RS232 voltages off their serial ports. JDM programmers depend on that
    -12V to 12V swing to operate properly.

    Take a read around my Trivial PIC programmer site for insight into the
    voltage, testing, and which part to choose issue.

    I would suggest ditching the 16F84, upgrading to a 16F88, 16F648A, or 16F628A
    and building a simple parallel port programmer.

    Good luck,

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