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I’m working with cyclone III FPGA (EP3C25) and I wanted to know if it’s possible to restore small amount of data inside the FPGA after general power down and power up again? (Without using any external storage devices such as Flash…)
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You cannot store data in the FPGA that will survive a power-cycle. However, the Cyclone III has to configure itself from an external non-volatile memory device, eg., an EPCS device. You can program data into that device. You can then access that data at the next power-on, or if your logic depends on it, you can have logic copy the external data into on-chip SRAM, and then have your logic access it from there.
Cheers,
Dave
