In fact SDcard hardware only does reads and writes in multiples of 512 bytes, as its based on flash chips, so it has to buffer. In flash ROM all operations are block-wise, not byte-wise, which allows much higher memory density.
In fact SDcard hardware only does reads and writes in multiples of 512 bytes, as its based on flash chips, so it has to buffer. In flash ROM all operations are block-wise, not byte-wise, which allows much higher memory density.