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Electronic device

A technology for electronic devices and electronic switches, applied in circuit devices, DC network circuit devices, electrical components, etc., can solve problems such as the failure of storage units to work normally

Inactive Publication Date: 2014-09-10
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the above-mentioned electronic device is shut down or the power supply line fails to cause the power supply voltage output by the power supply unit to drop continuously, the above-mentioned power supply voltage will be lower than the normal operating voltage of the processing unit and the storage unit, and there is a chance that the processing unit can still work normally and the storage The unit cannot work normally, so the processing unit will still send a read command to the storage unit. Since the storage unit cannot work normally, the storage unit will mistakenly recognize the above read command as an erase command (erase command), and the storage unit will The erase command will be executed to clear the data in the memory cell

Method used

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Embodiment Construction

[0011] see figure 1 , an electronic device 100 in a preferred embodiment includes a power supply unit 10 , a processing chip 20 , a storage unit 30 and a detection unit 40 . In this embodiment, the storage unit 30 is a Flash memory.

[0012] The power supply unit 10 is used to output a supply voltage, which is used to supply power to the processing chip 20 and the storage unit 30 . The processing chip 20 is configured to send a read instruction to the storage unit 30 to read data in the storage unit 30 .

[0013] The detection unit 40 is connected to the power unit 10 . The detection unit 40 is used to detect the above power supply voltage, and output a first level signal when the power supply voltage is lower than the reference voltage, and the first level signal is used to control the processing chip 20 to reset or stop working. The detection unit 40 is also configured to output a second level signal when the power supply voltage is greater than the reference voltage, and...

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Abstract

An electronic device comprises a power supply unit used for outputting power supply voltage, a processing chip, a detection unit and a storage unit. The power supply voltage supplies power to the processing chip and the storage unit, the processing chip is used for transmitting a reading command to the storage unit to read data in the storage unit, and the detection unit is used for detecting the power supply voltage and outputting a first level signal when the power supply voltage is smaller than the reference voltage, and the first level signal is used for controlling the processing chip to conduct resetting or stopping work.

Description

technical field [0001] The invention relates to an electronic device. Background technique [0002] The electronic device includes a power supply unit, a processing unit and a storage unit. The power supply unit provides power supply voltage to the storage unit and the processing unit at the same time, and the processing unit is used to send a read instruction to the storage unit to read data in the storage unit. The normal operating voltage of the processing unit and the storage unit is the same. [0003] When the above-mentioned electronic device is shut down or the power supply line fails to cause the power supply voltage output by the power supply unit to drop continuously, the above-mentioned power supply voltage will be lower than the normal operating voltage of the processing unit and the storage unit, and there is a chance that the processing unit can still work normally and the storage The unit cannot work normally, so the processing unit will still send a read co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/00G06F12/16
CPCH02J1/00Y10T307/406G11C16/00G11C16/30
Inventor 王雅国陈俊卿
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD