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Altera_Forum's avatar
Altera_Forum
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13 years ago

User data in the system EEPROM

Hello, please advise if it is possible to have a part of the system EPCS64SI16 to contain user accessible/erasable/writeable data. FPGA chip used is EP3C25. Is it reliable/supported configuration? Th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

I assume you already noticed that EPCS flash memory can be only erased in pages. As another point, the Quartus programmer is usually erasing it completely when updating the FPGA configuration, which may be unwanted if you intend to keep calibration data, module identities etc. across FPGA software updates.

There are several possible reasons to prefer an additional I2C or SPI EEPROM for parameter storage.