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BrianSune_Froum's avatar
BrianSune_Froum
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5 days ago

Cyclone IV drop in replacement confirmations

Dear Altera, If the BANK VCCIO is 1.8V and the same package but with different LE # FPGA is drop in replace. Where the original pin is a VCCA while different LE size same pin is a IO. With 1.8V on...
Generic Io
Power
Programmable Logic Device
AqidAyman_Altera's avatar
AqidAyman_Altera
Icon for Regular Contributor rankRegular Contributor
2 hours ago

Hi Brian,

 

Can you provide the OPN for both of the devices that you refer here?

 

Regards,

Aqid

BrianSune_Froum's avatar
BrianSune_Froum
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1 hour ago

AqidAyman_Altera​ 

The question is not related to any specific Cyclone IV devices:

The question is about when VCCIO is driven from 1.8V or any voltage under the VCCA, do the input pins are allow to feed in 2.5V or 3.3V as datasheet marked with <3.6V on inputs?

When this question is answered there is no issue on the remains drop-in compatibilities.

Thanks,

Brian