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Physical operation method of flash memory chip

A technology of physical operation and flash memory chips, applied in the storage field, can solve the problem of low effective use capacity of flash memory chips

Active Publication Date: 2008-12-10
SLICONGO MICROELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a method for reading and writing flash memory chips, which solves the problem of effectively using the capacity of flash memory chips by performing physical operations in units of blocks in the prior art. low problem

Method used

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  • Physical operation method of flash memory chip
  • Physical operation method of flash memory chip
  • Physical operation method of flash memory chip

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] see figure 1 , is a schematic diagram of a flash memory chip 100 provided in the first embodiment of the present invention.

[0034] The flash memory chip 100 includes four memory blocks (Blocks), which are Block 110 , Block 120 , Block 130 and Block 140 . Each memory block has a block physical address. The block physical address may be the starting physical address of the storage block.

[0035] It can be understood that the flash memory chip 100 provided in this embodiment includes four memory blocks, which is not a limitation to the flash memory chip 100 of the present invention. Of course, the flash memory chip 100 can also include N memory blocks, and the N is greater than or an integer equal to 1.

[0036] In this embodiment, among the four storage blocks of the flash memory chip 100 , the storage block 110 and the storage bl...

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Abstract

The invention provides a physical operation method for a flash chip. The flash chip comprises a plurality of storage blocks for bad blocks. The physical operation method is as follows, each storage block for a bad block is divided into a plurality of small blocks, the erase operation is carried out in each storage block, and the write operation or the read operation is carried out in each small block. The invention also provides another physical operation method for a flash chip, which comprises: each storage block for the bad block is divided into a plurality of small blocks, the small block containing the bad page is unavailable, and other small blocks are available; some or all of available small block in two or more than two storage blocks for bad block are recombined into a new storage block; and the physical operation is carried out in each new storage block. The physical operation method for the flash chip provided by the invention, i.e. subdividing the original bad block and reorganizing the good small storage block in the original storage block for bad block, can promote the effective storage capacity of the flash chip, thereby promoting the economic benefit.

Description

technical field [0001] The invention relates to the field of storage, in particular to a physical operation method of a flash memory chip in the field. Background technique [0002] Flash memory (Flash Memory) is a long-life non-volatile (it can still maintain the stored data information in the case of power failure) memory, because it can still save data when the power is turned off, flash memory is usually used to save settings Information, such as saving data in the computer's BIOS (basic input and output program), PDA (personal digital assistant), digital camera, etc. [0003] Flash Card or USB Flash Drive is a memory that uses Flash Memory technology to store electronic information. It is generally used as a storage medium in digital cameras, computers, mobile phones, MP3 and other small digital products. According to different applications, flash memory cards generally include SM card (SmartMedia), CF card (Compact Flash), MMC card (MultiMediaCard), SD card (Secure Di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C16/06G11C16/08G06F12/02
Inventor 李国强
Owner SLICONGO MICROELECTRONICS INC
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