System on chip, temperature measurement unit, related device and method

Abstract

The invention provides a system on chip, a temperature measurement unit, a related device and a method. The system on chip includes a temperature measurement unit. The temperature measuring unit includes: a first ring oscillator which inputs a first current and outputs a first electrical signal having a first frequency, the first current linearly changing with temperature; the second ring oscillator is used for inputting a second current and outputting a second electric signal with a second frequency, and the second current linearly changes along with the temperature; and the frequency ratio module is used for acquiring the ratio of the first frequency to the second frequency to serve as the output of the temperature measuring unit so as to represent the temperature information. According to the embodiment of the invention, digital temperature measurement is realized in the system-on-chip, the power supply voltage compatibility problem of the system-on-chip can be solved, the power consumption is reduced, and the chip area is reduced.

Description

technical field [0001] The present disclosure relates to the field of chips, and more particularly, to a system-on-chip, a temperature measurement unit, and related devices and methods. Background technique [0002] Temperature measurement has a wide range of applications in the chip field. At present, the temperature measurement on the chip mainly adopts the method of analog measurement. There are two drawbacks to this approach. First, the chip generally consists of an analog circuit part and a digital circuit part. A chip usually needs to measure the temperature in the analog circuit part and the digital circuit part. When the temperature measurement is performed in the digital circuit part, an analog temperature measurement component or circuit is inserted. This part of the component or circuit requires an analog voltage as a power supply, while the digital circuit part only has a digital supply voltage, so the supply voltage is incompatible. In addition, this analog ...

AI Technical Summary

Problems solved by technology

When measuring temperature in the digital circuit part, insert an analog temperature measuring component or circuit, this part of the component or circuit needs analog voltage as power supply, and the digital circuit part only has digital power supply voltage, so the power supply voltage is incompatible

In addition, the analog measurement method obtains an analog signal, which needs to be converted into a digital signal and supplied to the digital circuit part, so an analog-to-digital conversion circuit is required, so that the required power consumption and chip area are relatively large

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