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Data storage device and data maintenance method thereof

A data storage and data maintenance technology, applied in the direction of electrical digital data processing, digital memory information, data processing input/output process, etc., can solve problems such as self-floating gate leakage

Inactive Publication Date: 2015-06-24
SILICON MOTION INC (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the charge stored in the floating gate will be lost from the floating gate due to the operation of the flash memory and various environmental parameters, causing the problem of data retention (Dara retention)

Method used

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  • Data storage device and data maintenance method thereof
  • Data storage device and data maintenance method thereof
  • Data storage device and data maintenance method thereof

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Embodiment Construction

[0025] Devices and methods of use of various embodiments of the present invention are discussed in detail below. It should be noted, however, that the present invention provides many possible inventive concepts that can be implemented in various specific scopes. These specific examples are only used to illustrate the device and method of use of the present invention, but are not intended to limit the scope of the present invention.

[0026] figure 1 is a block diagram of an electronic system of an embodiment of the present invention. The electronic system 100 includes a host 120 and a data storage device 140 . The data storage device 140 includes a controller 160 , a flash memory 180 and a temperature sensing device 190 , and can operate according to commands issued by the host 120 . The controller 160 includes a computing unit 162 , a persistent storage (eg, ROM) 164 , a random access memory 165 and a timing device 166 . The persistent memory 164 and the loaded program co...

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Abstract

A data storage device including a flash memory, a temperature sensor, and a controller. The temperature sensor detects surrounding ambient temperature. The controller reads the temperature sensor to obtain a current temperature parameter at a predetermined time, compares a plurality of write temperatures of the blocks with the current temperature parameter one by one, and writes data stored in at least one first block of the blocks into at least one third block of the blocks, wherein the first block corresponds to at least one first write temperature of the write temperatures, and the difference between the first write temperature and the current temperature parameter is greater than a predetermined value.

Description

technical field [0001] The invention relates to a data maintenance method of a memory device; in particular, it relates to a data maintenance method for automatically monitoring flash memory parameters. Background technique [0002] Flash memory is a common non-volatile data storage device that is erased and programmed electrically. Take the NAND-type flash memory (NAND FLASH) as an example, it is often used as a memory card, a USB flash device, a solid state drive (SSD), an embedded flash memory module ( eMMC)...etc. [0003] A storage array of a flash memory (eg, NAND FLASH) includes a plurality of blocks, wherein floating gate transistors can be used to form the flash memory. The floating gate in a floating gate transistor captures electrical charge to store data. However, the charge stored in the floating gate will be lost from the floating gate due to the operation of the flash memory and various environmental parameters, causing a problem of data retention (Dara ret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/02
CPCG06F3/064G06F3/0619G06F3/0653G06F3/0679G11C7/04G11C16/107
Inventor 简介信许弘达
Owner SILICON MOTION INC (CN)