MEMORY CARD AND METHOD STORING DATA THEREOF

摘要

A memory card and a data storing method thereof are provided to reduce a data transfer time from a host and a NAND flash memory embedded in the memory card by including a separate path for directly transferring the data from the host and the NAND flash memory. A NAND flash memory(210) has pages and each page comprises sectors. A memory controller(220) receives the data from the host(100) in a sector unit, and transfers sector data to the NAND flash memory directly or via a buffer memory(330) according to a sector address. The memory controller includes the first data bus(341) transferring the sector data via the buffer memory and the second data bus(342) directly transferring the sector data to the NAND flash memory. The memory controller includes a control unit(360) for activating the first or second data bus in response to the sector address. The control unit includes an address register(362) storing the defined sector address, a selector(361) selecting the first or second data bus by comparing the sector address with the defined sector address, and a DMA(Direct Memory Access) controller(363) interrupting a CPU(370) and managing the selected data bus.