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Altera_Forum
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16 years ago

HELP ME about EP2C20Q240C8,PLEASE!

HI ALL I'm using the cycloneII(EP2C20Q240C8).I want to know what the difference the pin 178 and the others.when i use the pin 178 as LVTTL output,it cannot output a wave (frequency about 25MHz whe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

i use altera fpga many years, i will not let the pin be shorted. the unused pin were made as input tri_stated.But when i didn't use the pin178, the chip is normally cool.Meanwhile i have tried two pcb board to test, the result is same.