help needed for memory card?

[yviswanathbe]

sandisk oem mmc manual

Hi,
I need a help in memory card(1GB) with spi interfacing.

I want to store values displaying in the voltmeter continuously in the memory(i have choosen memory card) till i complete the measurements.
After measurement has been completed i will be connecting this menory card to the PC and i will be retreiving values which are stored in the memory card.This is my idea.

can anybody suggest me some memory cards with spi interfacing

or

memory chips (with upto 1GB storage capacity) which is compatible with spi interfacing.

Thanks & Regards,
viswanath

 

[Eugen_E]

i2c sd memory card

SD cards or MMC cards can be interfaced on SPI.

Use a microcontroller and implement or use a library for FAT16 or FAT32. You can create a file, and write values. The file can be readed from the card on PC.

 

[yviswanathbe]

toshiba sd memory card pdf

Hi,
Thanx 4 Replying.

Can we directly interface the card to the microcontroller r we need any support controllers we need put in between Microcontroller and card.

Can you suggest me some companies who sells these types of cards(SD or MMC).
I googled some(SANDISK etc) but i dint find the datasheets.

n

libraries (FAT32 r FAT64) for microcontroller ,how to start implementing?give me some idea.....

Thanx & Regards,
viswanath.

 

[Eugen_E]

The card is connected directly to uC, if the uC is powered at 3.3V. If it is powered with 5V, you need a simple level conversion with resistors or zener, or a HVC buffer.


http://elm-chan.org/fsw/ff/00index_e.html

 

[yviswanathbe]

Hi,
Thanks for your valuable information.

One more thing where can we get connectors for these cards?(i mean mating slots to insert these cards).
provide me some vendors list.
I am planing to go for Sandisk SD card?
Give me suggesions.

Thanks In Advance.

Regards,
Viswanath.

 

[ckshivaram]

u can interface the memory card u use in mobile to interface with controller. or u can u SD card also to store the data. better you interface it to 32 bit controller, as 8bit will not be that fast when u try to read the contents of the card. In long run 8 bit controller fails.

 

[yviswanathbe]

Thanks Shiva,

I am going to use Silabs C8051F005(8-bit controller),Because my application is to measure and store the value.

I want to interface SD card or MMC Card to the above Microcontroller.

Do all the SD cards used in the mobile suports SPI interfacing?

I have seen SANDISK & TRANSCEND SD cards available in the market?

Can i use these cards to interface with microcontroller(My Controler is silabsC8051F005, it supports SPI,I2C)?

Where can i get the Technical datasheets for these cards?

Please Suggest me.

Thanks in advance.

Regards,
Viswanath.

 

[ckshivaram]

SD cards briefly talk about their security features and the need to pay the "Secure Digital People" for specs on the device and perhaps even some proprietary information on how to talk to the chip such that it will actually store and retrieve data.

So I suggest you to go for MMC card.

Go to Sandisk's website, and get the MultiMediaCard spec in the OEM
section. Develop your software against the MMC spec. If your
software follows the MMC spec, it will talk to an SD card without
changes. You don't need to know anything about the security features,
and you don't need the SD card spec. The only difference will be that
you'll need an SD-compatible slot, since the SD card is thicker.

**broken link removed** Sandisk SD card product manual
**broken link removed** MiniSD card
**broken link removed** Older SD card
specs

Using SDCard and SDIO with the Intel? PXA250 MMC Controller Application Note
https://www.intel.com/design/pca/applicationsprocessors/applnots/278533-001.htm
Toshiba SD card specification
**broken link removed**

 

[microtoad]

Thanks Shiva,

I am going to use Silabs C8051F005(8-bit controller),Because my application is to measure and store the value.

I want to interface SD card or MMC Card to the above Microcontroller.

Do all the SD cards used in the mobile suports SPI interfacing?

I have seen SANDISK & TRANSCEND SD cards available in the market?

Can i use these cards to interface with microcontroller(My Controler is silabsC8051F005, it supports SPI,I2C)?

Where can i get the Technical datasheets for these cards?

Please Suggest me.

Thanks in advance.

Regards,
Viswanath.

hi
i just want to ask if you have succed on this project ??
interfacing c8051f005 and a sdcard

thanks