Overwriting data in the internal flash

[nicolas-jb]

Posted on June 12, 2007 at 12:54

Overwriting data in the internal flash

[nicolas-jb]

Posted on June 12, 2007 at 12:07

Hi

I work on the ST10F273M

I would like to know if it's possible to overwrite data in the internal flash (without writing '1' in place of '0 ')?

for exemple, if there is this data ''0xAAAAFFFF'' written in the internal flash, can i overwrite it with the data ''0xAAAA5555'' ?

thank you

Nicolas

[najoua]

Posted on June 12, 2007 at 12:54

Hi nico456,

Yes, it is possible to overwrite data in the internal flash.

The principle is to replace ones with zeros. For example, 0xAAAAFFFF can be overwritten by 0xAAAA5555, 0xAAAA4444, 0x88883333 etc...

0xAAAAFFFF can not be overwritten for example by 0xBBBBFFFF. To write 0xBBBBFFFF, the location must be erased before (becomes 0xFFFFFFFF).

Hope this was clear,

Regards,

Najoua.