Hello, I intend to use sdcard as ROM . As far as I know that flash has ~100.000 program/erase cycles. But I don't know about read cycle. In my project, I have used a Microcontroller to interface with sdcard, however only read(not write) data from sdcard then load to internal RAM of Microcontroller and further processing. This operation is repeated in a infinite loop (thus I have compare it as act of RAM which works with intensity high and continuous). And my question is it has any limit of read cycle as with write operation and life time of sdcard when compare with sdram in the case of use as above description?