stm32 低功耗，最低是2μA。在72MHz时消耗36mA(所有外设处于工作状态)，待机时下降到2μA。
STM32系列基于专为要求高性能、低成本、低功耗的嵌入式应用专门设计的ARM Cortex-M内核（ST's product portfolio contains a comprehensive range of microcontrollers, from robust, low-cost 8-bit MCUs up to 32-bit ARM-based Cortex?-M0 and M0+, Cortex?-M3, Cortex?-M4 Flash microco...
