一种超低功耗微控制器片上系统设计  

Design of an ultra-low power microcontroller system on chip

作　　者：屈宝丽 QU Baoli(Xi’an Traffic Enginering Institute,Xi’an 710300,China)

机构地区：[1]西安交通工程学院,陕西西安710300

出　　处：《电子设计工程》2022年第13期91-95,共5页Electronic Design Engineering

摘　　要：针对微控制器片上系统的超低功耗需求,设计了一种集成DC/DC电源管理和自适应动态电压控制(ADVC)机制的超低功耗单片机片上系统。该系统包括完整的Synopsys ARC EM5D核心MCU,具有全套DSP指令,并可在312 kHz~80 MHz的宽频率范围内最大限度地降低能耗。使用许多独特的低压数字库,包括大约300个逻辑单元和时序元件,用于超低功耗单片机片上系统设计。芯片上的硅传感器用于在给定的频率和环境条件下连续改变工作电压,以优化功率和性能,并解决在低电压下工作时的产量和寿命问题。可以通过最多8位数字和线性控制的首次故障(FFail)电路检测给定频率下的故障SoC电压。磁芯在0.45~1.1 V的电压范围之间工作,通过电池直接连接,输入电压范围为1.6~3.6 V。测量结果表明,FFail电路能够精确地跟踪核心频率,满足低功耗要求。Aiming at the ultra-low power requirement of the system on the chip of microcontroller,an ultra-low power single-chip microcomputer system on the chip was designed,which integrated DC/DC power management and Adaptive Dynamic Voltage Control(ADVC) mechanism.The SoC includes a complete Synopsys ARC EM5D core MCU with a full set of DSP instructions and maximizes power consumption over a wide frequency range of 312 kHz~80 MHz. Many unique low-voltage digital libraries,including about 300 logic units and timing elements,are used for ultra-low power single-chip system-onchip design.The silicon sensor on the chip is used to continuously change the operating voltage at a given frequency and under environmental conditions to optimize power and performance,and to solve the problem of output and life when operating at low voltages.The first fault circuit can be used to detect the fault SoC voltage at a given frequency by up to 8 bits digital and linear control.The magnetic core operates in a voltage range of 0.45~1.1 V and is connected directly through the battery with an input voltage range of 1.6~3.6 V.The measurement results show that FFail circuit can accurately track the core frequency and meet low power requirements.

关 键 词：亚阈值逻辑 低压单片机 自适应动态电压控制 故障电路 

分 类 号：TN9[电子电信—信息与通信工程]