once more flash problem

Altera_Forum · ‎07-20-2009

Hello guys, I have once more a problem with my flash ram.

It's no problem to read out the cfi table. (see screen.jpg)

So I think there are no connection, communication and timing errors.

But to upload a programm into the flash ram doesn't work.

I read in ALTERA flash ram troubleshooting guide about a "FLASH TEST" routine, but I didn't find it. Could somebody explain me where it is?

I hope somebody has an idea to solve this problem.

Any help would be great, thanks.

Manuel

Altera_Forum · ‎07-21-2009

For all who are interested in flash memory problems...

Some devices can optionally used in 8 or 16 bit data mode. In my case I use the 8 bit mode. If you can read out your cfi table, you can be sure that your flash device is correct implemented.

But be carefully, on top of this information, you can find a sentence, in my case "found cfi table in 16 bit mode".

This tells the programmer in which mode do you use your flash ram. but in my case was this a wrong information.

You should write your flash in command line mode with the parameter --width=8 ;)

By the way, my flash device is called AT48BV163D