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

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 over the past few years, which has led to a rapid increase in consumer demand for storage media. Because 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 the built-in various portable types mentioned above. Multimedia device. [0003] Generally speaking, a rewritable non-volatile memory device is configured with normally used physical blocks and spare physical blocks. When storing data from the host system, the data will be stored in an idle physical block. Idle physical blocks storing data from the host system will be converted into physical blocks for normal use. Whe...

AI Technical Summary

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

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