Dynamic self-adaptive SOC system working in sub-threshold region and adjusting method

Abstract

The invention relates to a dynamic self-adaptive SOC system working in a sub-threshold region and an adjusting method. The dynamic self-adaptive SOC system comprises a sub-threshold power supply voltage generation circuit, a working state detection circuit, a digital SOC circuit and a clock module; the clock module outputs the same clock or frequency to the working state detection circuit and the digital SOC circuit, the working state detection circuit compares the fed-back clock or frequency in real time to dynamically and adaptively adjust a reference circuit output to the sub-threshold power supply voltage generation circuit, and then voltage input to the digital SOC circuit is adjusted, and therefore, the system works in the sub-threshold region. According to the invention, dynamic self-adaptive adjustment is realized, the production yield is improved, and meanwhile, the failure caused by an unpredictable working environment is overcome.

Description

technical field [0001] The invention relates to the technical field of integrated circuit SOC, in particular to a dynamic self-adaptive SOC system and an adjustment method that keep working in a sub-threshold region. Background technique [0002] With the rise of IOT, the demand for ultra-low power SOC (system-on-chip) is getting stronger and stronger. A common way to achieve ultra-low power consumption is to make the SOC work in the sub-threshold region. In order to make the system work in the sub-threshold region, it is only necessary to reduce the power supply voltage of the system to near the sub-threshold value. Because the system works in the sub-threshold region, the reliability of the circuit is greatly reduced, and a large number of experiments are usually required to try the appropriate power supply voltage. However, due to the fact that the process parameters in the chip manufacturing process are not completely determined according to a certain statistical distrib...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming of prior art, provide a kind of dynamic self-adaptive SOC system and adjustment method that keep working in the sub-threshold area, solve the existing digital SOC circuit can not work in the best state and, thus affect the digital SOC The performance parameters of the circuit even lead to the problem that the digital SOC circuit cannot work

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