It is interesting to note the design trend in mobile devices like phones.
Years ago, it was typical to have a NAND flash controller built into the SoC (like a TI OMAP, Freescale i.MX series or similar).
This is raw Flash memory, and it is up to the SoC plus OS to manage error recovery, remapping bad sectors, etc.
However, in recent years, most mobile devices just use one of their SD interfaces (often 8-bit these days) to access an eMMC chip. This looks just like a SD card, because it has a FTL in it which takes care of a lot of the low level details needed for Flash management.
Some SoCs these days don't even include a NAND Flash controller anymore.
It is interesting to note the design trend in mobile devices like phones.
Years ago, it was typical to have a NAND flash controller built into the SoC (like a TI OMAP, Freescale i.MX series or similar).
This is raw Flash memory, and it is up to the SoC plus OS to manage error recovery, remapping bad sectors, etc.
However, in recent years, most mobile devices just use one of their SD interfaces (often 8-bit these days) to access an eMMC chip. This looks just like a SD card, because it has a FTL in it which takes care of a lot of the low level details needed for Flash management.
Some SoCs these days don't even include a NAND Flash controller anymore.