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Altera_Forum
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18 years ago

Cyclone III AS configuration bizarreness

I am using a cyclone III (EP3C25F324C8N) with an EPCS16 configuration device. I am programming the configuration device through the FPGA with the serial flash loader. The problem is that the Cyc...
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Altera_Forum
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17 years ago

I must confess, that I didn't experience any of the said problems with Cyclone III, apart from a case, where a customer connected VCCA to 1.2V by mistake (according to the Cyclone II use). Some reports are sounding really strange, e. g. the screwdriver thing. However, the manual discusses possible problem with non-monotonous VCCA rise and unsuitable connection of configuration pins. To my opinion, the issue may occur only when supplying VCCA by a separate SMPS. When supplying VCCA with a LDO from 3.3V as we did, this can't happen.