Design And Implementation Of Low Power MCU For Red Blood Cell Detection Based On UPF

In recent years,with the continuous advancement of the technology in the IC industry,the circuit scale of the chip is expanding day by day,and the internal complexity is gradually increasing,and the power consumption problem brought by this phenomenon has become an important factor that cannot be ignored by the chip designers.In all kinds of portable intelligent medical devices,considering their daily use scenarios and performance indicators,how to effectively control the power consumption of the internal control chip is also the primary consideration of the current researchers.Therefore,on the basis of ensuring the reliability,stability and performance requirements of the chip,it is of great significance to achieve the design goal of low power consumption.The research object of this paper is a red blood cell detection chip developed for the medical market.Based on the design of the first version of the chip,the low-power improvement strategy is proposed.The low-power design process based on UPF standard is used in the design method to carry out the low-power design.The main work and achievements are as follows:1.By analyzing the power source of CMOS circuit and the current low-power design process based on UPF that is commonly used in the industry,this paper designs a variety of working modes that match the application scenarios and market positioning of this chip.There are five working modes with different power consumption performance,including Sleep Mode,Stop Mode,Standby Mode,Shutdown Mode and Running Mode.2.The system is divided into multiple voltage domains by multi-voltage design method and gated power off technology,and different power supply strategies are adopted for different voltage domains under different working modes to reduce the power consumption of the system by turning off the power supply;Using the gated clock technology,in the low power mode,part of the peripheral module clock and the system master clock software can be configured with gated or forced gated to reduce the power consumption caused by the clock.And this chip is responsible for the realization of low power strategy of the two core modules,power management module(PMU)and clock reset management module(RCC),detailed design analysis.3.According to the low-power strategy of the chip,complete the power intention description file conforming to UPF standard,realize the function simulation with UPF file,logic comprehensive implementation and system power verification,and obtain the final power analysis results through EDA related tools.It is demonstrated that the proposed low power strategy can significantly reduce the total power consumption of the chip under the highest operating frequency and the lowest power shutdown mode compared with the first version of the chip,reaching the design requirements of less than or equal to 20 m W and 10 u W,respectively.As low consumption of red blood cell detection chip modified design,the design of low power consumption scheme put forward by this paper has realized the multi voltage domain,The method uses the RTL with UPF design process,realizes the system related to low power test and integrated,at the same time accelerates the verification work and reduce the debugging difficulty,ensure the low power design intent from the front-end design,verification to synthesize,and the back-end is consistent.