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Condition detection apparatus, system and electronic device for NAND flash memory body

A state detection device and state detection technology, applied in the electronic field, can solve the problems of large hardware platform limitations and inconvenient expansion, and achieve the effect of small hardware design changes, easy expansion, and small limitations

Inactive Publication Date: 2009-07-08
SHENZHEN COSHIP ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a system startup method based on NAND Flash, aiming to solve the problem that the existing NAND Flash-based system startup method has relatively large limitations on the use of hardware platforms and is inconvenient to expand

Method used

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  • Condition detection apparatus, system and electronic device for NAND flash memory body
  • Condition detection apparatus, system and electronic device for NAND flash memory body
  • Condition detection apparatus, system and electronic device for NAND flash memory body

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] In the embodiment of the present invention, the CPU obtains the working status of the non-flash memory by detecting the status detection pin or through the status query command.

[0029] figure 1 The structure of the NAND Flash state detection device provided by the embodiment of the present invention is shown, and only the parts related to the embodiment of the present invention are shown for convenience of description.

[0030] The device can be used for systems started based on NAND Flash, and can also be used for electronic equipment, such as mobile terminals, personal digital assistant...

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Abstract

The invention, which is suitable for the technical field of electrons, provides a device and a system for detecting states of an NAND flash and an electronic aid, wherein, the device comprises a central processing unit (CPU); the CPU comprises a state detection pin, a BOOT pin 0 and a BOOT pin 1; the CPU is configured into a mode of the high-capacity NAND flash, the state detection pin of the CPU is configured into a ready state , the CPU further comprises a detection unit used for detecting the working conditions of a low-capacity NAND flash through a state query command; and / or the state detection pin of the CPU is connected with the high-capacity NAND flash, so as to detect the working conditions of the high-capacity NAND flash. In the invention, the CPU obtains the working states of the NAND flash through the state detection pin or the state query command, and has the advantages of low application limitation of the hardware platform, and convenient extension.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a state detection device, system, electronic equipment and method of non-flash memory. Background technique [0002] Most of the existing CPUs support the non-flash memory (NAND Flash) boot mode. After the machine is powered on, it can read the boot execution code from the NAND Flash to the memory for execution, and complete the system phase-locked loop, clock, memory, peripherals, etc. Initialization, which requires that the memory of the startup code can be read and written when the CPU is powered on. [0003] According to the capacity, NAND Flash can be divided into two types: small capacity (Small Block) and large capacity (Large Block). Generally, NAND Flash with capacity greater than or equal to 1G bytes is defined as large capacity NAND Flash, and NAND Flash with capacity less than 1G bytes is defined as small capacity NAND Flash. . Different capacities o...

Claims

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Application Information

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IPC IPC(8): G11C29/56G06F9/445
CPCG11C5/143G06F13/00G06F11/22G06F13/1668
Inventor 王世勇
Owner SHENZHEN COSHIP ELECTRONICS CO LTD
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