Method and system for reducing power consumption of nfc chip when idle

Abstract

The invention discloses a method and system for reducing the idle power consumption of an NFC chip. The method includes the following steps that A, when the duration of the idle state of an I2C bus is longer than a first preset time period, the NFC chip is switched into an energy-saving state; B, after a baseband processor sends data to the NFC chip, the NFC chip is activated and switched into a working state; C, the baseband processor sends data to the NFC chip again. According to the method and system for reducing the idle power consumption of the NFC chip, the NFC chip enters the energy-saving state when idle, the NFC chip is controlled to be activated and enter the working state again through the baseband processor, and therefore the idle power consumption of the NFC chip is reduced effectively. Meanwhile, the method is based on frequently-used I2C bus connection, no extra hardware equipment or connection needs to be added, and the method and system are simple, practicable and high in universality.

Description

technical field [0001] The invention relates to low power consumption technology of a mobile terminal, in particular to a method and system for reducing power consumption of an NFC chip when idle. Background technique [0002] The I2C bus is a common bus used to connect microcontrollers and their peripherals. Because it has the advantages of fewer interface lines (only one clock line and one data line, a total of two lines), simple control method, small device package, and high communication rate, so the I2C bus is widely used in the field of microelectronic communication control. broadly used. In the mobile terminal, many peripheral devices are connected to the baseband processor through the I2C bus, such as the popular NFC (Near Field Communication, near field communication) chip currently on the market. [0003] In the prior art, after the user selects to enable the NFC function through the menu, the NFC chip is in a standby state and waits for the baseband processor to...

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Problems solved by technology

[0005] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a method and system for reducing the power consumption of the NFC chip when it is idle, aiming at solving the problem of long idle time of the NFC chip and increasing the invalid power consumption of the mobile terminal in the prior art. question

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