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Altera_Forum
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12 years ago

Can I use EPCQ32 with Cyclone III?

Hello, I mistakenly used an EPCS16 (8-pin SOIC) in my design with a Cyclone III EP3C120. Active serial has been working but if I use more than half the chip then my program will probably not fit ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

"Disable EPCS ID Check" is only for configuration purpose.Cyclone II and other older devices (prior to V series) cant recognized EPCQ device ID when this EPCQ is sending data to the FPGA.Thats why disabling the option solved the issue. If used with <EPCS128, there is no need to disable it. Note that Cyclone II was developed long time ago before the EPCQs.