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Memory management method, memory storage device and memory control circuit unit

A memory management and memory control technology, applied in the field of memory, can solve problems such as unpredictable data writing speed

Active Publication Date: 2020-04-14
SHENZHEN EPOSTAR ELECTRONICS LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no matter whether the data from the host system is stored together while the garbage collection program is being executed or the data from the host system is temporarily suspended while the garbage collection program is being executed, the rewritable non-volatile memory device is not sensitive to the data from the host system. The write speed will be in an unpredictable state

Method used

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  • Memory management method, memory storage device and memory control circuit unit
  • Memory management method, memory storage device and memory control circuit unit
  • Memory management method, memory storage device and memory control circuit unit

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Embodiment Construction

[0080] Generally speaking, a memory storage device (also called a memory storage system) includes a rewritable non-volatile memory module (rewritable non-volatile memory module) and a controller (also called a control circuit). Generally, a memory storage device is used with a host system so that the host system can write data to or read data from the memory storage device.

[0081] figure 1 is a schematic diagram of a host system, a memory storage device, and an input / output (I / O) device according to an exemplary embodiment of the present invention. figure 2 It is a schematic diagram showing a host system, a memory storage device and an I / O device according to another exemplary embodiment of the present invention.

[0082] Please refer to figure 1 and figure 2 , the host system 11 generally includes a processor 111 , a random access memory (random access memory, RAM) 112 , a read only memory (read only memory, ROM) 113 and a data transmission interface 114 . The process...

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Abstract

The invention provides a memory management method, a memory storage device and a memory control circuit unit. The method comprises the steps that first data is received; the total number of first type of entity erasing units which do not store valid data is detected; and a first program will be executed if the total number is smaller than a first critical value. The first program comprises the steps that second data is received from a rewritable nonvolatile memory module; the first data and the second data are stored temporarily; and write-in rules are decided dynamically according to storage states of the rewritable nonvolatile memory module, and the first data and the second data are stored in the rewritable nonvolatile memory module according to the decided write-in rules. According to the invention, the write-in speed of the rewritable nonvolatile memory module corresponding to the first data in the first program is stable.

Description

technical field [0001] The invention relates to a memory technology, in particular to a memory management method, a memory storage device and a memory control circuit unit. 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. Since the rewritable non-volatile memory module (for example, flash memory) has the characteristics of data non-volatility, power saving, small size, and no mechanical structure, it is very suitable for being built in various portable memory modules listed above. in the multimedia device. [0003] Generally speaking, normally used physical blocks and spare physical blocks are configured in the rewritable non-volatile memory device. When storing data from the host system, the data will be stored in spare physical blocks. Idle physical blocks that store data from the host system will be converted into normally used physical blo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/0652G06F3/0658G06F3/0679
Inventor 廖世田谢宏志
Owner SHENZHEN EPOSTAR ELECTRONICS LTD
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