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Interfacing between cyclone 2 and M45PE80 flash

Altera_Forum
Honored Contributor II
‎03-19-2008 01:00 PM
1,074 Views

We have on board M45PE80 serial flash which is connected to cyclone 2 throughout SPI bus.  

 

On some boards M45PE80 flash works perfectly, while on other boards it works for 1 or 2 months or less and then it stops working. M45PE80 flash not responded, although fpga cyclone 2 correctly generates timing. I was surprised when I press with finger on the 

M45PE80 it starts to work again. On some boards M45PE80 never works. The changing spi bus frequency does not influence design. 

 

Interfacing between cyclone 2 and M45PE80 flash is done according http://www.propox.com/download/docs/evbst7_disk_en.pdf( without serial termination) 

 

Thanx, Amir
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Altera_Forum
Honored Contributor II
‎03-19-2008 01:03 PM
368 Views

I forgot to write question :)  

 

Does anybody have experience with M45PE80 or interfacing this chip?
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