MDM, DOM, DOC, CF

Hello,

What is endurance of DOM, MDM, DOC and CF ?
For example, I read in data sheet of my MDM (MicroDisk Module) that
it has endurance of 500,000 Program/Erase cycles. If I understand it
correctly, I can write one large file and erase it 500,000 times.
It seems to be not enough for me.
In my project, linux box grabs information from RS232 and stores
it in a file. The other computer connects to linux box, receive
data from file and erase it.
So, if I create, write, read, and erase my file 10 times a minute, there are
about 500,000 cycles a month. Well... does it mean that I have to
change memory module once a month ?
How about endurance of DOM, DOC, and CF ?
What kind of memory will be the best for me in project i shortly
presented above.

Thanks,
Trix.

"Trix" wrote in message
...
Hello,

What is endurance of DOM, MDM, DOC and CF ?
For example, I read in data sheet of my MDM (MicroDisk Module) that
it has endurance of 500,000 Program/Erase cycles. If I understand it
correctly, I can write one large file and erase it 500,000 times.
It seems to be not enough for me.
In my project, linux box grabs information from RS232 and stores
it in a file. The other computer connects to linux box, receive
data from file and erase it.
So, if I create, write, read, and erase my file 10 times a minute, there
are
about 500,000 cycles a month. Well... does it mean that I have to
change memory module once a month ?
How about endurance of DOM, DOC, and CF ?
What kind of memory will be the best for me in project i shortly
presented above.


Around 100k erase cycles is the typical life time of flash RAM (or EEPROMs).
DOC and MDM modules use higher grade parts with 500k cycles.
For frequent changes of data you need RAM or if non-volatility is required
then battery backed RAM.
http://www.samsung.com/Products/Semi...lash/index.htm