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AN2629 Datasheet(PDF) 22 Page - STMicroelectronics |
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AN2629 Datasheet(HTML) 22 Page - STMicroelectronics |
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22 / 43 page  Power and wakeup time measurement AN2629 22/43 Doc ID 13922 Rev 2 5 Power and wakeup time measurement 5.1 Introduction This section describes the measurement of the STM32F10xxx low-power mode consumptions and wake up timings. All described tests are made on the STM3210B evaluation board (order code STM3210B-EVAL) and can easily be tailored to any other hardware. This board is available for evaluation and testing purposes. Please contact your local ST sales office for further details. This section is divided into two main parts: the first describes power measurement and the second handles the measurement of the time required by the STM32F10xxx to wake up from the different low-power modes. 5.2 Power measurement 5.2.1 Context This part describes how to measure the power consumption of the STM32F10xxx using the firmware provided in the Zip file that comes with this application note. This firmware is available in the CurrentMeasurements folder. The CurrentMeasurements folder contains all the subdirectories and files that make up the core of the application example: ● inc subfolder contains the example header files ● src subfolder contains the example source files ● project subfolder contains two projects that compile the example files: – EWARMv5: contains the project for the EWARM toolchain – RVMDK: contains the project for the RVMDK toolchain – RIDE: contains the project for the RIDE toolchain 5.2.2 Detailed description Power is measured in the following STM32F10xxx low-power modes: ● Sleep mode: power consumption in this mode depends on the used clock and the active peripherals. So, to cover the whole applicative functionality of this mode, measurements are made using different clock sources (HSI and HSE), clock frequencies (from 125 kHz to 72 MHz) and APB peripheral configurations (all peripheral clocks ON or all peripheral clocks OFF). ● Stop mode: power consumption in this mode is measured in the two possible configurations of the Stop mode (Regulator in Run mode and Regulator in low-power mode). Note that for the Sleep and Stop modes, all unused I/O pins are configured as analog pins. The Schmitt trigger input is thus deactivated, leading to zero consumption for these I/O pins. ● Standby mode: power consumption in the standby mode is measured with RTC OFF and with RTC ON. Note: For more details on the different low-power modes please refer to Section 1: Power supply. |
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