Need help!

Discussion in 'General Electronics Chat' started by R!f@@, Apr 14, 2012.

  1. R!f@@

    Thread Starter AAC Fanatic!

    Apr 2, 2009
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    See the Picture. What is it.

    I need to know what it does and how I can buy it. This is something interesting to u guys too. But first pour down everything abt the chip

    [​IMG]
     
  2. chrisw1990

    Active Member

    Oct 22, 2011
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    ok, its an atmel chip.. but, from the datasheet of the eeprom im using the package top info doesnt seem to resemble any thing compared to the chip name..
    so youll have to either contact them.. or figure it out from wherever you got it..
    so where did you get it?:D
     
  3. R!f@@

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    I cannot give out the source cause this has dollar value..
    All I can say is it came from a Sat box.
    I swapped tht little bugger and the receiver starts to work, so I am on break through again.

    I am too having a hard time figuring it out.

    Do we need to talk about my findings to figure out this bugger.
     
    Last edited: Apr 15, 2012
  4. chrisw1990

    Active Member

    Oct 22, 2011
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    well.. 'tween you n me.. i bet its an eeprom.. and i bet it has some secret black magic written on it which inhibits the box working..
    then again, my just be some programming, not so much magicc..
    <edit>
    and no you dont need to give out your source.. its not gonna help lol
    just contact atmel.. be like "oh i found this component, what is it please?" Texas instruments told me off for doing that.. "this isnt the email for these matters, i will close this issue, the chip is this goodbye" so i sent back "well if you labelled your chips correctly i wouldnt have this problem " w***ers
     
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  5. R!f@@

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    so nobody else got any insight on this chip ..Eh!
     
  6. MrChips

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    As already suggested, I too suspect this an ATMEL EEPROM chip that stores security codes on a sat descrambler. Having a blank chip alone will not help. You still need to know what info to program into the chip.
     
  7. R!f@@

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    This thing does not stores any codes.
    It stores everything I think.

    Is it possible to copy this one?
     
  8. R!f@@

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    OK ...careful study of the data proved that this is an Atmel AT25320B-SSHL chip.

    Any one care to explain me any details of programming this.

    I got 2 corrupt chips and 1 working one.

    Any one care to work with me on this. The datasheet provided above says data can be read.
     
  9. kubeek

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    If you have serial port or a usb-serial converter, you can use http://www.lancos.com/siprogsch.html to read the data and write it to new chips. 25320 spi eeprom seems to be supported. You will have to carefully desolder the working one, programming it in circuit won´t work.
     
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  10. MrChips

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    How do you know that the 2 corrupt chips are truly bad.
    Perhaps they were reprogrammed with new security codes that don't work in that descrambler.
     
  11. t06afre

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    May 11, 2009
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    It is an EEPROM. So it should be possible to read out the content. By the way I think you are wrong about the chip type. Your chip is the AT24C256B 256K (32,768 x 8). Due to the 2EB on the 8-SOIC on the picture you posted.
     
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  12. R!f@@

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    I can't post my findings in an open forum.
    If any one wanna know, you have to chat with me. I am happy to tell any member here what this is all about.

    I know for sure that chips are bad cause I desoldered and soldered them swapping each other to the box
     
  13. R!f@@

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    Are u sure on this ?

    Check page 14 of the attached. the first chip marking and tell me I am wrong abt my assumption.
     
  14. t06afre

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    yes download the datasheet. And look in section describing the chip markings. The chip you suggested use (5BB or something like it) as type marking. 2EB is used on the AT24C256B
     
  15. R!f@@

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    Can u go thru post #13 again please
     
  16. t06afre

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    Please take a look at this document page 14 and the 8-SOIC description
    http://www.atmel.com/Images/doc5279.pdf
    Your chip is marked ATMELH836 so it is made 2008 week 36. The next row is 2EB 1 and this is correct according to the datasheet. The last row is LOT number
     
  17. MrChips

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    I would not be so sure. Each chip is programmed in circuit with unique data when you connect and pay for service.
     
  18. R!f@@

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    Go on..........
     
  19. MrChips

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    I should know. Client asked me to program a copy of a chip. No questions asked. No answer given.
     
  20. R!f@@

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    What's tht suppose to mean?
     
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