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Altera_Forum
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14 years ago

HAL API for CFI FLASH write

Hello, My custom design is done with a ARRIAI-IGX FPGA connected to a 512Mbits CFI FLASH with blocks of 128ko. I have implemented a NIOS CPU in order to write/read to/from the CFI FLASH. ...
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Altera_Forum
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14 years ago

You can separate out the 'erase' and 'write' operations.

The only way you can change a bit from a 0 to a 1 is via the full 128k erase.

NOR flash will let you do any number of separate writes than convert bits from 1 to 0 - you can actually write the same location multiple times.

NAND flash has additional error correction areas for each sector - so there is a small limit (maybe 4) on the number of writes.

Not sure what the 'CFI' flash is.

Don't know what the Altera supplied functions actually let you do.