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Altera_Forum
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12 years ago

Cyclone IV E Unused I/O configuration

Hi, We are using Cyclone IV E EP4CE30F23C8 in our design. Based on Cyclone device pin connection guidelines document(PCG-01008.pdf), all unused signals we have left them unconnected on th...
Altera_Forum's avatar
Altera_Forum
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12 years ago

I suggest to stay with the Quartus default for most FPGA families - tristated with weak pull-up. Leaving unconnected inputs floating can cause increased supply currents.