Method for lowering power consumption of nand flash controller
A controller and power consumption technology, applied in the field of remote external measurement system, can solve the problems of shortening the working time of the recorder and affecting the working reliability of the recorder, and achieve the effect of reducing power consumption
Inactive Publication Date: 2015-05-06
BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE +1
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Problems solved by technology
[0002] In order to resist the impact of landing, the recorder needs to be protected layer by layer, so that the heat generated by the electronic components inside the recorder cannot be diffused and accumulated inside. If the heat is too high, it will affect the reliability of the recorder and shorten the working time of the recorder.
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[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] The read and write signals of the nand flash chip are generated by the nand flash controller. In the previous design of the nand flash controller, the system clock is used to trigger the generation of the read and write signals of the nand flash chip, such as figure 1 As shown, the specific steps are as follows:
[0017] Step 1, under the trigger of the rising edge of the system clock, control the reading and writing signal of the nand flash chip from high level to low level;
[0018] Step 2: Change the read / write signal of the nand flash chip from low level to high level at the rising edge of the next system clock.
[0019] If the traditional implementation is adopted, at least two system clock cycles are required to complete a read and write operation of the nand flash chip. In this invention, under the premise of not changing the reading and...
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The invention discloses a method for lowering the power consumption of a nand flash controller. The method includes the following steps of firstly, lowering the system clock frequency of the nand flash controller by a half; secondly, conducting reverse operation on a system clock; thirdly, enabling the nand flash controller to conduct read-write operation; fourthly, enabling the system clock and a read-write enabling signal generated by the nand flash controller to conduct 'or' operation while the third step is executed so as to generate a new nand flash chip read-write signal. On the premise that the nand flash chip read-write speed of the nand flash controller is not changed, the system clock frequency of the nand flash controller is lowered by a half, and therefore the power consumption of the nand flash controller is lowered.
Description
technical field [0001] The invention belongs to a remote external measurement system and is applied in the field of high overload resistant recorder design, in particular to a method for reducing power consumption of a nand flash controller. Background technique [0002] In order to resist the impact of landing, the recorder needs to be protected layer by layer, so that the heat generated by the electronic components inside the recorder cannot be diffused and accumulated inside. If the heat is too high, it will affect the reliability of the recorder and shorten the working time of the recorder. [0003] The power consumption generated by electronic components is related to the operating frequency, so how to ensure the use of the lowest possible clock frequency without changing the reading and writing speed of the nand flash controller in the recorder becomes the key to be solved technical problem. Contents of the invention [0004] The purpose of the present invention is ...
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IPC IPC(8): G06F3/06
CPCG06F3/0625
Inventor 胡光东宋蔚皓李骥金文李宝
Owner BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE