IOB IO Standards in Spartan 3

What if I configure some IOB tu use a standard of 1.8v but vcco 3.8v? Will the FPGA be burned?

Thanks in advace for answer Mehdi

Reply to
GaLaKtIkUs™
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oups 3.3v and not 3.8v!

Reply to
GaLaKtIkUs™

"GaLaKtIkUsT" schrieb im Newsbeitrag news: snipped-for-privacy@j33g2000cwa.googlegroups.com...

no

Reply to
Antti Lukats

ok. but will the design work normally? are the io vcco information stored in the bitstream and how does it affect the correct functionning of the fpga?

Reply to
GaLaKtIkUs™

the bitstream contains some parameters that are optimized for given VCCIO standard. the actual VCCIO is supplied externally so settng iostandard to 1.8V and VCCIO to 3.3 will output 3.3V levels. This will not burn the FPGA but some parameters will not be optimal, etc..

Reply to
Antti

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