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Altera_Forum's avatar
Altera_Forum
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20 years ago

16-bit flash as code storage

hello we are want to use internal flash of EPC4 as code storage for nios. this is 16 bit memory. so what is the proper connection for address line and settings in SOPC builder. nios flash...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Hello m_fox,

For getting more information about the EPC4 you have to look into the datasheet of the MT28F400B3from Micron (http://download.micron.com/pdf/datasheets/flash/boot_block/f45.pdf

) because this one is inside the EPC4. IMHO the EPC4 must be used in Word-Mode (BYTE# = Vcc). So A0 of the Flash is for word-wide-adressing and the A1 of the Nios must be connected with A0 of the Flash.

BTW: If you are planning a new design It would be easier and much cheaper to use the actual devices like Cyclone II and Statix II with state-of-the-art serial configuration devices (e.g. EPCS4).

Regards,

niosIIuser