Data processor with flash memory, and method for accessing flash memory

Abstract

A data processor includes a flash memory, a random access memory (RAM), and a controller that creates free space information of the flash memory, creates record data according to each of a read latest data of the flash memory, and stores the free space information and the record data into the RAM.

1 . A data processor, comprising:
 a flash memory;   a random access memory (RAM); and   a controller that creates free space information of the flash memory, creates record data according to each of a read latest data of the flash memory, and stores the free space information and the record data into the RAM.   
     
     
         2 . The data processor according to  claim 1 , wherein
 the controller reads the record data corresponding to an identifier of a reading target and the free space information from the RAM, and reads data of the reading target from the flash memory based on the read record data.   
     
     
         3 . The data processor according to  claim 1 , wherein
 the controller writes new data to a head of the free space with reference to the read free space information without overwriting existing data.   
     
     
         4 . The data processor according to  claim 1 , wherein
 the free space information indicates a free space head address.   
     
     
         5 . The data processor according to  claim 1 , wherein
 the record data includes a head address in the flash memory and a data length.