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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 field of electronics, can solve the problems of large limitations of the hardware platform and inconvenient expansion, and achieve the effect of small changes in hardware design, easy expansion, and small limitations.

Inactive Publication Date: 2014-07-30
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

A NAND flash state detecting device, system, electrical device and method are provided. The NAND flash state detecting device includes a CPU which includes a state detecting pin, a BOOT 0 pin and a BOOT 1 pin, the CPU is configured as a large block NAND flash mode, and the state detecting pin is set as ready state, the CPU further includes a detecting unit for detecting the work state of a small block NAND flash through a state check command, and / or connects the state detecting pin of the CPU with the external large block NAND flash to detect the work state of the large block NAND flash. Thus, the CPU can obtain the work state of the NAND flash  through detecting the state detecting pin or through the state check command, and the localization for using in hardware plat is less and it is easy to expand.

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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Patent Type & Authority Patents(China)
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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