DATA STORAGE DEVICE AND FLASH MEMORY CONTROL METHOD

摘要

A flash memory control technology with high performance efficiency. A logical block table is managed on a random access memory to record logical blocks of breakpoints of sequential write operations issued from a host to write a flash memory. It is prohibited from performing garbage collection on the logical blocks recorded in the logical block table. In this manner, the system resources are no longer wasted by hastily organizing incomplete sequential write data.

主权项

1. A data storage device, comprising:
a flash memory, providing a storage space divided into a plurality of physical blocks with each physical block further divided into a plurality of physical pages; a control unit, comprising a microcontroller and a random access memory and coupled between a host and the flash memory, wherein: the microcontroller is configured to manage a logical block table in the random access memory to record logical blocks of breakpoints of sequential write operations issued from the host to write the flash memory; and the microcontroller is configured to prohibit garbage collection on the logical blocks recorded in the logical block table.