topic Maximum capacity SD Card that LPC 1857 support in LPC Microcontrollers

Maximum capacity SD Card that LPC 1857 support

lpcware — Wed, 15 Jun 2016 18:17:32 GMT

Content originally posted in LPCWare by manoS on Mon Aug 24 22:26:28 MST 2015
Hello,

I am working on a project where I need to store/log some data onto SD Card .
But i cant find in data sheet direct reference to maximum capacity (bytes) of SD Card that can be interfaced.
I need to define maximum size of the SD Card that can be connected to the LPC1857 based system.

I did study a bit on types of SD Cards (https://www.sdcard.org/developers/overview/capacity/) and types of file system format (example MBR/FAT12/FAT32/FAT16/FAT-FS).
The bus width is 32 bits. And so is FIFO buffer width for read and write operation of 32 bits.
Block size is settable 512 bytes to 64k bytes (for LPC1857).

Are these factors influential , that confine/limit the size of the the SD card that can be accessed /connected via LPC1857? If yes how?

So, What / How to determine(s) the maximum capacity of SD Card that LPC1857 can support?

Looking forward for a response.

Re: Maximum capacity SD Card that LPC 1857 support

lpcware — Wed, 15 Jun 2016 18:17:33 GMT

Content originally posted in LPCWare by wmues on Tue Aug 25 05:42:29 MST 2015
There is no limit from a hardware point of view.

Up to 32 GByte, you will get SDHC cards with FAT32 file system. Pretty common stuff.

Over 32 GByte, the SDXC cards will have exFAT file system. You will have to get an exFAT driver and pay royalities to Microsoft.

regards
Wolfgang

Re: Maximum capacity SD Card that LPC 1857 support

lpcware — Wed, 15 Jun 2016 18:17:33 GMT

Content originally posted in LPCWare by manoS on Tue Aug 25 21:31:07 MST 2015
Hello Wolfgang,

That helps!
Thank You :-)