The invention intends to provide a memory card conforming to an HS-MMC
mode in a standard of a multimedia card, while securing compatibility of
both standards of the multimedia card and an SD card. In a normal MMC
mode, the data is outputted at a fall edge of a clock signal. A frequency
of the clock signal is about 20 MHz. When the data is outputted at the
fall edge of the clock signal, data output is in time for a next clock
signal. When a parameter `1` is set to a timing register provided in a
host interface, the memory card is transitioned into the HS-MMC mode. In
the HS-MMC mode, a clock signal frequency is increased to about 52 MHz.
Here, the data is outputted at the rise edge of the clock signal, whereby
the data output is brought in time for the rise edge of the next clock
signal.