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Altera_Forum
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16 years ago

JTAG configuration error in CycloneIII

Hi The last week I wrote a post about a problem with the configuration of the EP3C5E144C8N cycloneIII FPGA: ------------- I´m trying to program a EP3C5E144C8N FPGA in JTAG mode using a ByteBla...
Altera_Forum's avatar
Altera_Forum
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14 years ago

No the VCCA needs to be at 2.5V. If you connect it to 3.3V you'll probably damage the Cyclone III.

VCCIO is supposed to be on pin 4 of the JTAG connector, not pin 6. Pin 6 isn't used by the blaster in JTAG mode anyway, so I don't think it matters a lot.

I see you are using the E144 package. Did you remember to connect the exposed pad on the bottom of the chip to ground? If you don't do it the component won't work and you won't be able to configure it.