Connect with us

What kind of IC is this?

Discussion in 'General Electronics Discussion' started by tj107us, Sep 3, 2012.

  1. tj107us

    tj107us

    48
    0
    Apr 23, 2011
    I was cleaning up in my electronics lab today and found this IC. Does anyone know what it is? I tried Googling it but no results. Looks like some early processor for a computer but im not sure!!


    Jake
     

    Attached Files:

  2. john monks

    john monks

    693
    1
    Mar 9, 2012
    This looks like an EPROM.
    Pull the tape off and you probably see some numbers under in.
    Take a look at the underside.
     
  3. tj107us

    tj107us

    48
    0
    Apr 23, 2011
    here is some more pics.
     

    Attached Files:

  4. tj107us

    tj107us

    48
    0
    Apr 23, 2011
    john your were right!! and its make by AMD.
     
  5. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,174
    2,690
    Jan 21, 2010
    It's an eprom. Under that sticker you'll find a quartz window through which you can see the chip itself. UV light will erase the data stored on it so it can be re-written.

    It may be something like 4k x 8 bits or something similar.

    The actual part number is not visible, so I can't tell. The number of legs narrows it down a bit though.

    edit: it's a 2716 (2k x 8)
     
    Last edited: Sep 3, 2012
  6. tj107us

    tj107us

    48
    0
    Apr 23, 2011
    so holding it up to a fluoresecent light will erase it? is that the reason for the sticker over the window?
     
  7. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,174
    2,690
    Jan 21, 2010
    I think a normal Fluro will erase it in about 10 years.

    Bright sunlight, in several hours, the correct UV source, a couple of minutes.

    Google should tell you.
     
  8. Jotto

    Jotto

    120
    0
    Aug 24, 2012
    That is a very old one, newer ones will also have speed on them now. Just use a ultra violet lamp and erase for about 10-30 minutes. Not worth a lot at the moment, but I think in a few years they will increase in price. Most are just manufacturing one shot eeproms now. I have thousands of these up to 8meg. You will need a burner that can verify if the chip is good or bad with zero sum check.
     
  9. tj107us

    tj107us

    48
    0
    Apr 23, 2011
    What can you program on them
     
  10. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,174
    2,690
    Jan 21, 2010
    Any combination of 2048 bytes.

    They don't do anything except store data. And by today's standards, not a lot of that.
     
  11. tj107us

    tj107us

    48
    0
    Apr 23, 2011
    So what are they used for?
     
  12. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,174
    2,690
    Jan 21, 2010
    They store data. 2K was once a relatively large amount of data.
     
  13. tj107us

    tj107us

    48
    0
    Apr 23, 2011
    i wrote 4 letters(abcd) in notepad and saved it, and that was 2kb. What kind of data is only 4 letters that can be stored on the EPROM? Or does notepad take X amount of data to tell what the file is?
     
  14. amidis86

    amidis86

    47
    0
    Jul 17, 2012
    it should bin file that size 2kb. You can try willem programmer software to look what inside 2kb file that can burn into 2716. The address will start 00000000 to 000007f0. And it use hex code not abcd. same like 27c256 - 32kb used in honda obd1 ecu to control ecu
     
    Last edited: Sep 5, 2012
  15. tj107us

    tj107us

    48
    0
    Apr 23, 2011
    hey i went back one the notepad, it does take a lot data to make 2kb.
     
  16. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,174
    2,690
    Jan 21, 2010
    The minimum size file on disk for your computer may be 2k. The actual data is 4 bytes (or maybe up to 20(ish) if you're using a multi-byte file format)
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-