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

A technology for controlling circuits and control methods, which is applied in the direction of instruments, electrical digital data processing, input/output to record carriers, etc., and can solve problems such as accidental loss of data, accidental loss of buffer memory data, and total data volume exceeding expectations, etc.

Active Publication Date: 2021-03-12
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some cases, the data in the buffer memory that has not yet met the write condition may be accidentally lost due to a sudden power failure
Especially, for memory storage devices that support mu

Method used

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

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Embodiment Construction

[0035] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used in the drawings and description to refer to the same or like parts.

[0036] 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). Typically memory storage devices are used with a host system such that the host system can write data to or read data from the memory storage device.

[0037] figure 1 It is a schematic diagram showing 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 ...

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PUM

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Abstract

The invention provides a memory control method, a memory storage device and a memory control circuit unit. The method comprises the following steps: caching a first type of data in a buffer memory, wherein the first type of data is stored in a rewritable nonvolatile memory module in a first programming mode by default; when the first type of data is cached in the buffer memory, caching the secondtype of data in the buffer memory, wherein the second type of data is default to be stored in the reproducible nonvolatile memory module in a second programming mode; in the buffer memory, if the datasize of the first type of data does not reach the first threshold value and the data size of the second type of data reaches the second threshold value, storing the first type of data in the buffer memory in the rewritable nonvolatile memory module, so that the management efficiency of the cache data is improved.

Description

technical field [0001] The invention relates to a memory control technology, in particular to a memory control 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 built-in Among the various portable multimedia devices listed above. [0003] Generally, data from the host system is first cached in buffer memory. When the amount of data to be stored in the buffer memory corresponds to the amount of data corresponding to a basic write data unit, the data to be stored in the buffer memory can be stored in the rewritable non-volatile memory module based on the basic write data unit middl...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0604G06F3/0629G06F3/0679Y02D10/00
Inventor 胡俊洋洪屹廷
Owner PHISON ELECTRONICS
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