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Altera_Forum's avatar
Altera_Forum
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15 years ago

de2 board minimum voltage

hi

could I operate the de2 board with less then 9 volt ?

13 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    I am having trouble with burning my code into the DE2 board SDRAM (that way I wouldn't need to burn my code every time I shut his power down)

    does any body know how could I do that?
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    And yes I can activate the system with less than 9 [v] but their is a catch

    at 5 [v] min (although the chip himself is working at 1.2 [v] as I was told) the system is comming to life but in order to burn new programs to the board need we need at least 6 [v] and in order to activate all the sensors and motors and even the communication module that is connected to my system the board needed at least 8[v] weird ... but I guess it could change form system to system
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    If you examine the DE2 schematic, you'll notice that the 3.3V switcher LM2676 has a specified minimum inpout voltage of 8V. There's no specification about reduced performanve with lower input voltage. In addition a voltage drop of 0.6..0.8 will be caused by the schottky bridge rectifier.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    thanks ,

    I did examine the schematic (wasn't easy to find) but I didn't thought about the minimum voltage needed to activate the regulator.

    so I guss that's way all of my gpio connections didn't work.

    do you know what do I need to do in order to burn my code into the DE2 memory execpt from switching the switch to prog state ?
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Refer to the user manual chapter "Configuring the EPCS16 in AS Mode"

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    hi

    I followed the manual but when I press start I got this massage

    "Cannot start device configuration because no programming options have been selected for device chain"

    what can I do?
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Hi

    I was successfully burn something nut it's not my code... the altera de2 board have a blue power led on and every of the other green and red and lcd screen is turn on weak

    I tried to erase and burn again but I got the same result
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    The burning process still doesn't work I did everything that was said in the manual but nothing

    In quartus there is no warning and as far as he consider everything is ok

    But I didn't get the code to burn on the card instead all of the lights or turned on in a weak light

    I added a screen shot of the programming window

    Hope someone could help