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help needed to identify an IC

Discussion in 'Electronic Basics' started by Jerry, Feb 8, 2007.

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  1. Jerry

    Jerry Guest

    Hello, I have an IC I want to identify. Here's the problem. I have a
    machine that uses a Xenon pulsed arc light, the markings have been
    ground off by the vendor of the machine. The ic is mounted on a small
    pcb with a four pin connector and to be replaced when the bulb is
    replaced to reset a use counter. The IC appears to be used to count the
    bulb usage somehow and trigger an indicator when the bulb needs to be
    replaced. The (non US) machine vendor is no longer in business and I
    can't get the ic board anymore. The bulbs are std and readily available
    so I want to either reset or replace the ic board.

    The IC is an 8 pin DIL with a semicircle notch at one end. With
    semicircle marker at the top, all the left hand (four) pins and pin 2
    down from the marker on the right side are wired together and onward to
    one of the connector pins. The remaining three pins on the right, 1,3,4
    down from the semicircle marker each go to one of the remaining pins on
    the connector.

    I've not yet opened up the machine to see what the board connects to.

    Any ideas appreciated..
  2. Andrew Holme

    Andrew Holme Guest

    Sounds like an I2C EEPROM.
  3. Guest

    Why not do without the IC board and install an hour meter to show time
  4. Jamie

    Jamie Guest

    it's a PIC or AVR tiny chip..
  5. Colin

    Colin Guest

    At first I thought PIC, but it would not be connected as described by you.
    It is almost certainly a EEPROM, such as 24C16 or similar.
    However, just changing it is unlikely to help.
    It was probably preprogrammed by the manufacturer before installation as
    most of them are.
  6. Jerry

    Jerry Guest

    Thanks to all who replied. It is an I2C eeprom, I think a 24Cxx. I'm
    going to try and make a reader/programmer and see if I can't read what's
    on there and figure out what the programming might be.

    thanks again
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