Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Parallel Flash memory access failed

Hello, I am designing a simple system with a 4CE40 and a Spansion flash memory (S29GL512 : 64MB in 16bits organisation). But when I make a "hello world" software, it fails at "checking" step. H...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Hi Neptunus,

Actually, the flash device was dead. That was the root cause of my problem.

After changing the device, my design worked normally. Here are the timings I used :

Setup : 80ns

Wait : 160ns

Hold : 80ns

But that timings depend on the flash device itself. In case you have a doubt, please have a look on its datasheet timings.

Regards,

Cyril