EEMBC’s new version of the ultra-low-power ULPBench benchmark for embedded microcontrollers now focuses on peripherals including ADC, SPI, PWM with timer and RTC.
With manufacturers able to publish scores for supply voltages below 3,0 V, STMicroelectronics’ STM32CubeMonitor-Power graphical software tool can be used with the STM32 Power Shield to execute ULPBench tests and confirm that STM32 products offer strong performance at any voltage as well as in the core profile at 1,8 V.
STM32CubeMonitor-Power enables developers to swiftly analyse the low-power performance of target boards. This software tool acquires power measurements through the X-NUCLEO-LPM01A specialised intermediate board, and displays these measurements using an intuitive graphical interface. Dynamic measurement of current covers a range from 100 nA to 50 mA, while STM32CubeMonitor-Power allows updating of acquisition parameters, and data rendering in real time. Execution of EEMBC ULPBench tests is also supported to provide an accurate ULPMark score directly.
Reception of power measurements is done by an X-NUCLEO-LPM01A board at up to 100 kHz. Intuitive navigation into data is possible using mouse-based zoom and move functions, and control of all X-NUCLEO-LPM01A functions (such as acquisition frequency, supply voltage, triggers, and others) can be done from the graphical interface.
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