Chip ID

Discussion in 'Electronics Resources' started by CircuitSurfer, Sep 19, 2009.

  1. CircuitSurfer

    Thread Starter New Member

    Sep 19, 2009
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    I looked all over trying to identify these chips but hit the wall. If someone can please tell me I would appreceate it.
     
  2. rjenkins

    AAC Fanatic!

    Nov 6, 2005
    1,015
    69
    It appears to be a processor (or full custom chip) made by Macronix Semiconductor, with either program or function designed by General Instrument, as it has their copyright.

    Macronix only advertise memory chips, but they make custom ICs for other companies - eg. they make some of the chips in the Nintendo Gamecube.
    More info here:
    http://www.nintendoworldreport.com/specialArt.cfm?artid=1800

    Probably the only way you will get one is as a spare for whatever it was used in, if anyone sells them at all.
     
  3. CircuitSurfer

    Thread Starter New Member

    Sep 19, 2009
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    Do you think this chip can be reprogrammed? Is it an EPROM?
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
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    282
    That is not at all likely. Processors with internal EPROM always have a means of preventing either reading out the code, or reprogramming it. Even if you could get to it, it would not work as external memory to another device.
     
  5. CircuitSurfer

    Thread Starter New Member

    Sep 19, 2009
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    I was under the impression that I can use this chip instead of a PIC.
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
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    Well, if you have the data sheet, the programmer, and so on, maybe. That depends on your being able to program the IC, and what external functions are possible without support chips for the I/O.

    Life might be simpler with a Z80 or 6502, as they are still available, and so are the support chips. They have free assemblers, too. Check for the TASM online.
     
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