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Block management method, memory controller and memory storage device

A technology of a memory controller and a management method, which is applied in the field of block management of a memory controller and a memory storage device, and a physical block, and can solve problems such as block damage and failure to be reprogrammed

Active Publication Date: 2016-02-03
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In more detail, after a physical block has been erased many times (for example, 10,000 times), the physical block may be damaged and cannot be programmed anymore

Method used

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  • Block management method, memory controller and memory storage device
  • Block management method, memory controller and memory storage device
  • Block management method, memory controller and memory storage device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0092] [First Exemplary Embodiment]

[0093] Generally speaking, a memory storage device (also called a memory storage system) includes a rewritable non-volatile memory module and a controller (also called a control circuit). Typically memory storage devices are used with a host system so that the host system can write data to or read data from the memory storage device.

[0094] Figure 1A A host system and a memory storage device are shown according to a first exemplary embodiment of the present invention.

[0095] Please refer to Figure 1A , the host system 1000 generally includes a computer 1100 and an input / output (input / output, I / O) device 1106 . The computer 1100 includes a microprocessor 1102 , a random access memory (random access memory, RAM) 1104 , a system bus 1108 and a data transmission interface 1110 . The input / output device 1106 includes such as Figure 1B mouse 1202, keyboard 1204, monitor 1206 and printer 1208. It is important to understand that Figur...

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Abstract

The invention provides a block management method used for a nonvolatile memory module capable of copying, a memory controller using the method, and a memory storing device, wherein the nonvolatile memory module capable of copying is provided with a plurality of solid blocks. The block management method comprises the steps of: at least logically grouping the solid blocks into a data area, a spare area and a replacement area; and configuring a plurality of logic blocks to map the solid blocks belonging to the data area. The method further comprises the steps of assigning one or more than one solid block to the data area, and marking the logic block for mapping the worst solid block as a logic address, so as to prohibit the logic address for mapping the worst solid block to access. Therefore, with the adoption of the method provided by the invention, the nonvolatile memory module with a plurality of the worst solid blocks still can be used for storing data.

Description

technical field [0001] The present invention relates to a block management method, and in particular to a block management method for managing physical blocks of a rewritable non-volatile memory, a memory controller and a memory storage device using the method. Background technique [0002] Digital cameras, mobile phones, and MP3 players have grown rapidly in recent years, making consumers' demand for storage media also increase rapidly. Because rewritable non-volatile memory (rewritable non-volatile memory) has the characteristics of data non-volatility, power saving, small size, no mechanical structure, fast read and write speed, etc., it is most suitable for portable electronic products, such as notebook computer. A solid state drive is a storage device that uses flash memory as a storage medium. Therefore, the flash memory industry has become a very popular part of the electronics industry in recent years. [0003] The rewritable non-volatile memory module has a plura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/02
Inventor 叶志刚
Owner PHISON ELECTRONICS