Portable Data Storage Using Slc and Mlc Flash Memory

摘要

A portable data storage device is disclosed that includes an interface ( 3 ) for enabling the portable data storage device to be used for data transfer with a host computer ( 5 ), and an interface controller ( 2 ) for controlling the interface ( 3 ). There is also a master controller ( 7 ) for controlling the writing of data to and reading of data from a non-volatile memory ( 8, 9 ). The non-volatile memory is at least one single level cell (SLC) flash memory ( 8 ) and at least one multiple level cell (MLC) flash memory ( 9 ). The at least one single level cell flash memory ( 8 ) and at least one multiple level cell flash memory ( 9 ) are able to operate simultaneously for improving the speed of operation over onl multiple level cell flash memory.