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Greedy garbage collection system for an NAND Flash main control chip

A technology for recycling systems and main control chips, applied in the chip field, can solve the problems of reduced performance of main control chips, small flash memory blocks with small flash memory capacity, etc., to achieve high reliability, improve work efficiency, and achieve simple effects

Active Publication Date: 2019-05-10
TIANJIN JINHANG COMP TECH RES INST
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AI Technical Summary

Problems solved by technology

[0006] The main control chip embedded with the Greedy garbage collection module has high recycling efficiency when the flash memory capacity is small and there are few flash memory blocks. There will be a lot, which will cause the garbage collection module to greatly reduce the performance of the main control chip due to its retrieval mechanism and trigger mechanism.

Method used

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  • Greedy garbage collection system for an NAND Flash main control chip
  • Greedy garbage collection system for an NAND Flash main control chip
  • Greedy garbage collection system for an NAND Flash main control chip

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Embodiment Construction

[0037] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] In order to solve this problem, the present invention designs a garbage collection module with high reliability, simple implementation and high recovery efficiency, and embeds it in the main control chip of NAND Flash.

[0039] figure 2 Design a block diagram for the specific details of the garbage collection module of the present invention. The high-reliability and high-efficiency garbage collection module designed by the present invention mainly includes four functional sub-modules, which are the write address monitoring sub-module 1, the target screening sub-module 2, the recovery sub-module 3 and the storage space monitoring sub-module 4, wherein the target The screening module is composed of a grouping un...

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Abstract

The invention belongs to the technical field of chips, and particularly relates to a Greedy garbage collection system for an NAND Flash main control chip. Compared with the prior art, the garbage collection system provided by the invention is high in reliability, simple to implement and high in collection efficiency, and is embedded into a main control chip of the NAND Flash. Compared with a general garbage collection module adopting a Greedy collection strategy, the main control chip embedded with the high-reliability and high-efficiency garbage collection system has the advantage that the working efficiency can be greatly improved on the premise that the high reliability is ensured.

Description

technical field [0001] The invention belongs to the technical field of chips, and in particular relates to a Greedy garbage collection system used for a NAND Flash main control chip. Background technique [0002] With the development of computer technology, solid-state storage devices using flash memory as storage media have gradually replaced traditional mechanical storage devices with their excellent performance. Flash memory is mainly divided into two categories, NOR Flash and NAND Flash. NOR Flash is suitable for storing key codes in the system, while NAND Flash has the characteristics of large capacity, low cost, low energy consumption, and short erasing time. More suitable for storing user data. Therefore, NAND Flash is widely used in digital products and embedded development. [0003] NAND Flash particles are different from traditional mechanical hard disks, which can be directly recognized and used by the host. The flash memory master chip needs to perform a series...

Claims

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Application Information

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IPC IPC(8): G06F12/02
CPCY02D10/00
Inventor 李明洋杨硕杨阳王晓璐
Owner TIANJIN JINHANG COMP TECH RES INST
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