secondary storage for mcu

[sijincool]

i iam in a position to deal with a good amount of data with micro controller.
can anyone pls advice me a good storage system.that can be used faith flly to store strings,pictures,and audio type files.

how is fat16 sd card and eeproms??

which one is recomended.

and how should i implement the memmory management unit?

pls help,though this may be dump question.

 

[srizbf]

as you want to store pictures eeprom is not suitable.

better use sd card.

what microcontroller do you use?

srizbf
12thjune2010

 

[sijincool]

i use pic18f452.

what about the memmory management?

 

[amraldo]

SD card is used with an assosciation of a file system. You will see images as files.
--
Amr

 

[sijincool]

u mean fat16 and fat32.

would i be able to address the data by the name of the file and forget about the address locations.just as we do in windows???

could u pls help me to give an idea about maximum addressable locations....

like support upto 2GB,4GB etc.

i am using pic18f452 as the controller.

 

[srizbf]

you may interface sd card to PIC with suitable interface.
google for PIC related sd interface.

what you are reading is files only .
there is no address mapping as you expect.

when you read the files you will get into PIC memory.

srizbf
19thjune2010

 

[sahin5002]

Hi. Can you tell me the difference between SD and MMC card.

 

[srizbf]

MMC is the 1st generation . and SD cards are second generation based on MMC .

both have same size.

SD cards have write-protect switch . MMCs don't.

upto 4GB FAT12/16 file system is used in SD cards.
beyond FAT32 file sytems.

SDCards are widely used in digital cameras.
so cost is very low.

srizbf
20thjune2010