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Altera_Forum's avatar
Altera_Forum
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15 years ago

cyclone III vcca = 1.2v

because vcca connect 1.2v(must connect 2.5v) .jtag can't be successful; I use EP3C16F484I7 ,package BGA , anybody can give me some advices ?
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

The datasheet clearly specifies a VCCD_PLL voltage range. 2.5V must be expected to damage the chip, because it exceeds the absolute maximum rating of 1.8V.