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Nand flash element, and method and device for communication control thereof

A technology of communication control and components, applied in the field of memory, can solve the problem of heavy burden on the main controller, and achieve the effect of solving the heavy burden

Inactive Publication Date: 2018-08-03
GIGADEVICE SEMICON (BEIJING) INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a Nand flash element and its communication control method and device to solve the problem that the Nand flash element needs to rely on the main controller to manage it and cause the main controller to have a heavy burden

Method used

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  • Nand flash element, and method and device for communication control thereof
  • Nand flash element, and method and device for communication control thereof
  • Nand flash element, and method and device for communication control thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] figure 1 A structural block diagram of a Nand flash element provided by an embodiment of the present invention.

[0050] refer to figure 1 As shown, the Nand flash component provided in this embodiment includes a package body 10 , and a Nand flash core 11 and an internal controller 12 are arranged in the package body. The Nand flash core includes multiple Blocks, each Block is composed of multiple Pages, and each Page is composed of multiple Cell lines, and the core also includes a storage area for storing ECC check codes.

[0051] The above-mentioned internal controller is used to control the Nand flash core, and the internal controller specifically includes a basic configuration module 121 , a basic loading module 122 , a low-level module 123 and a product firmware module 124 .

[0052]Among them, the above-mentioned basic configuration module is used to store the basic information and configuration information of the Nand flash core, such as page size, block size, ...

Embodiment 2

[0055] figure 2 It is a flowchart of steps of a communication control method provided by an embodiment of the present invention.

[0056] The communication control method provided in this embodiment is applied to the internal controller of the Nand flash element provided in the previous embodiment, and is used to realize the communication between the internal controller and the upper computer.

[0057] refer to figure 2 As shown, the communication control method provided in this embodiment specifically includes the following steps:

[0058] S101: Receive data and commands sent by the host computer.

[0059] As mentioned in the previous embodiment, the internal controller of the Nand flash element includes a basic loading module, and the module has two working modes, namely Debug mode and Normal mode. When in Normal mode, the basic loading module directly loads the product firmware of this component into the RAM of the internal controller itself to run it; when the module ...

Embodiment 3

[0069] Figure 5 It is a structural block diagram of a communication control device provided by an embodiment of the present invention.

[0070] The communication control method provided in this embodiment is applied to the internal controller of the Nand flash element provided in the first embodiment, and is used to realize the communication between the internal controller and the upper computer.

[0071] refer to Figure 5 As shown, the communication control device provided in this embodiment specifically includes a data and command receiving module 20 and a kernel operating module 30 .

[0072] The data and command receiving module is used to receive the data and commands sent by the host computer.

[0073] As mentioned in the previous embodiment, the internal controller of the Nand flash element includes a basic loading module, and the module has two working modes, namely Debug mode and Normal mode. When in Normal mode, the basic loading module directly loads the produc...

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Abstract

Embodiments of the invention provide a Nand flash element, and a method and a device for communication control thereof. The Nand flash element specifically comprises a packaging body, and the packaging body is internally packaged with a Nand flash core and an internal controller. Specifically, through a product firmware module, ECC verification management, bad block management, address mapping management, or wear-leveling management on the Nand flash core are realized. Thus, the above management is realized without an off-chip master controller, so that a problem that the master controller hasheavy burden is effectively solved.

Description

technical field [0001] The invention relates to the technical field of memory, in particular to a Nand flash element and a communication control method and device thereof. Background technique [0002] Nand flash is a kind of flash memory, which uses nonlinear macro-cell mode inside, which provides a cheap and effective solution for the realization of solid-state large-capacity memory. Nand flash has the advantages of large capacity and fast rewriting speed. It is suitable for the storage of large amounts of data, so it has been more and more widely used in the industry. For example, embedded products include digital cameras, MP3 walkman memory cards, small and exquisite U disk, etc. [0003] The data of Nand flash is stored in the memory cell in the form of bits. Generally speaking, only one bit can be stored in each cell; these cells are connected into bit lines in units of 8 or 16 to form a so-called byte ( x8) / word(x16), this is the bit width of NAND Device. These bit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/10
CPCG06F3/0604G06F3/0658G06F3/0679G06F11/1044
Inventor 庄开锋
Owner GIGADEVICE SEMICON (BEIJING) INC