At 22:50 02.7.1997 -0500, you wrote:
>Hola,
>        I saw in a previous post that there are a few options when it
>comes to temporary data storage. Serial EEPROM's and FRAM's...
>        All that I've read about serial EEPROM's is that they are a
>little slow to finish the write cycle.. I am planning on using it in
>a data logging situation that will need to write at about 100 data
>bytes per second.

100 / 16 = 6.25 pages per second >>> = 160 mS Sample Time per page x 16
bytes. Where is the problem?

Hi,

year ago, i've make a project to log 16 channels analog data (x 16 bg).
I've used 8 pc x 24C65 seeprom. There is only 5ms write cik. per page of 16
bytes. Sample frequency in my project was 100 measuring per sec, that is 50
stores per sec. ( 800 bytes )  Also i've add ADPCM compression to increase
capacity.
But don't forget that the typical endurance of eeprom is 1 000 000 E/W !
Now i'm planning to use any Memory Card bigger then 512 KB, with serial
protocol, but which type?
Any suggestion...?


Chris B.

>        I have some EEPROMs but have not seen any suppliers for the
>FRAM memory that was mentioned.. I've done a web search to no avail..
>        Could someone point me in the right direction ?
>        Thanks in advance !!
>
>                                James Holbrook
>
>