Memory card, method for allotting logical address, and method for writing data

A method of logical address allotment comprising the steps of:

• forming sector blocks each including a certain number of sectors of physical addresses of a nonvolatile memory which has a first section of physical addresses and a second section of physical addresses which are continuous to the physical addresses of the first section;
• setting the starting physical address, with a certain offset being put thereon, to the starting logical address so that the starting physical address of an arbitrary sector block among said sector blocks is set to the starting logical address of a data area;
• setting logical addresses of the data area down to the last sector of the first section;
• and setting the remaining data area to physical addresses by starting at the starting physical address.

A method of logical address allotment for two nonvolatile memories each having a first section of physical addresses and a second section of physical addresses which are continuous to the physical addresses of the first section, said method comprising the steps of:

• forming, for each of said nonvolatile memories, sector blocks each including a certain number of sectors of physical addresses of nonvolatile memory;
• setting the starting physical address, with a certain offset being put thereon, of one nonvolatile memory among said two nonvolatile memories to the starting logical address so that the starting logical address of a data area is set to the starting physical address of an arbitrary sector block of said one nonvolatile memory;
• setting the remaining logical addresses alternately on a block by block basis to the sector blocks of said two nonvolatile memories down to the last sectors of the first section of physical addresses of said two nonvolatile memories;
• and setting the remaining data area to physical addresses of said one nonvolatile memory by starting at the starting physical address.

A method of logical address allotment for nonvolatile memories of 2N in number each having a first section of physical addresses and a second section of physical addresses which are continuous to the physical addresses of the first section, said method comprising the steps of:

• forming, for each of said 2N nonvolatile memories, sector blocks each including a certain number of sectors of physical addresses of nonvolatile memory;
• setting the starting physical address, with a certain offset being put thereon, of one nonvolatile memory among said 2N nonvolatile memories to the starting logical address so that the starting logical address of a data area is set to the starting physical address of an arbitrary sector block of said one nonvolatile memory;
• setting the remaining logical addresses sequentially on a block by block basis to the sector blocks of said 2N nonvolatile memories down to the last sectors of physical addresses of said 2N nonvolatile memories;
• and setting the remaining data area to physical addresses of said one nonvolatile memory by starting at the starting physical address.

A method of data writing on a memory card which has a nonvolatile memory having a first section of physical addresses and a second section of physical addresses which are continuous to the physical addresses of the first section, said method comprising the steps of:

• setting the starting physical address, with a certain offset being put thereon, to the starting logical address;
• storing temporarily data to be written, which is transferred from a host unit, on said memory card;
• reading out control information from a block of said nonvolatile memory and erasing the block;
• and storing temporarily data to be written next, which is transferred from the host unit, on said memory card, while storing the data which has been stored temporarily on said memory card into the block-erased sectors of said nonvolatile memory.