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5 Replies
- Altera_Forum
Honored Contributor
Read the handbook, and find the number of bits in the configuration file. That determines your flash size (without compression). From that you can select a configuration flash.
The minimum physical package size depends on whether you use Altera's "standard" devices, i.e., SOIC8 or SOIC16, or you use a compatible device. For example, the EPCS devices are re-branded Micron (previously Numonyx) parts; if you read their device identification (opcode 9Fh), the details read back are those of the Micron parts. http://www.micron.com/products/nor-flash/serial-nor-flash If you click on the M25P tab, these are the "classic" SPI flash devices. If you click on the N25Q tab, these are the EPCQ Quad-SPI flash. Spansion S25FL devices can also be used http://www.spansion.com/products/serial-flash/pages/spansion%20fl.aspx If you click on the technical documents tab and scroll down you will find this app note http://www.spansion.com/support/application%20notes/configuring_altera_fpgas_via_spi_flash_an.pdf If you look at the data sheets for these devices, you will find many more packaging options. Cheers, Dave - Altera_Forum
Honored Contributor
Thank's a lot for your answer, Dave!!!
That's what I need! - Altera_Forum
Honored Contributor
Hello Dave,
I've looked though all of the Cyclone V manuals and data sheets and am unable to find where the number of config bits is listed. Can anyone please provide a page number? I tried to generate a JIC file for the 5CEBA2F17 with a EPCS16, but got an error saying the part was too small, yet a designer who no longer works here designed in the EPCS16 saying it would work. - Altera_Forum
Honored Contributor
--- Quote Start --- I've looked though all of the Cyclone V manuals and data sheets and am unable to find where the number of config bits is listed. Can anyone please provide a page number? --- Quote End --- They're listed in the data sheet - Table 57. Uncompressed .rbf Sizes for Cyclone V Devices - p54 of the PDF http://www.altera.com/literature/hb/cyclone-v/cv_51002.pdf --- Quote Start --- I tried to generate a JIC file for the 5CEBA2F17 with a EPCS16, but got an error saying the part was too small, yet a designer who no longer works here designed in the EPCS16 saying it would work. --- Quote End --- The amount of compression possible depends on the complexity of the design; a blinky LED project might compress, but a real-world project might not ... Cheers, Dave - Altera_Forum
Honored Contributor
Dave,
Thank you very much!