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EPCS16 write one byte more than once

Altera_Forum
Honored Contributor II
‎01-11-2012 04:44 PM
1,177 Views

Hi, 

 

I'm trying to use the EPCS16 as storage memory for few bytes. 

The configuration is: Use Mega Function ALTASMI_PARALLEL without NIOS. 

I managed to read and write one byte the first time.  

When I try to rewrite in the same address the data keep the same. 

 

It is known any single byte write limitation? 

 

I'm using Quartus 11.0. 

 

Best Regards, 

Manpsilva
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Altera_Forum
Honored Contributor II
‎01-11-2012 06:37 PM
434 Views

Review the serial flash datasheet: After erasing a 512 kbit sector, you can only change data bits from '1' to '0' when wrring one or multiple bytes with a page program command.

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Altera_Forum
Honored Contributor II
‎01-12-2012 10:38 AM
434 Views

Thanks, that explains a lot! 

 

But I can't find on the Datasheet I have... 

 

Best Regards, 

M
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