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Altera_Forum's avatar
Altera_Forum
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16 years ago

Power consumption of device configuration

Hello,

I need to know how much power is needed to configure an FPGA. I can't find any doc about this, so I want to use a 1k resistor connected to VCCint and measure voltage. But maybe you know more accurate way, or you know any documentation? I use Cyclone III EP3C25F256C8 and passive serial mode.

thanks,

Sz.

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    It's an unusual problem, I guess you have to measure it yourself. An 1k series resistor may involve a too large voltage drop during startup and possibly prevent the initialisation. I suggest to use reasonable resitance values for current measurement and as sensitive voltmeter. You can refer to some Dev. Kits that have a power supply current measurement implemented.