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Altera_Forum
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16 years ago

EPCS controller access serial flash memory

Hi guys, I have the schematic of the NIOS processor which has been sent by the client in which he has a STM M25p32 serial flash memory.......whereas in the system.h file produced from the give...
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Altera_Forum
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16 years ago

maheshv_1203,

I have a board that's a CycloneIII with NiosII in there and an Atmel 32Mbits serial Flash connected to Active Serial pins for FPGA configuration. I just found out by experimentation that flashing via SFL or via NiosII Flash Programmer does not work for this 32Mbits flash. When I dropped in an EPCS16 device, both methods work. So if you have to go with non-Altera, try using a Flash with same density of a supported EPCS, and try to go with Numonyx (ST Micro) since they make Altera's EPCS devices.