The STMicroelectronics ultra-low-power STM32L073xx microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0 crystal-less) with the high-performance Arm Cortex-M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (up to 192 Kbytes of Flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals. The STM32L073xx devices provide high power efficiency for a wide range of performance. It is achieved with a large choice of internal and external clock sources, an internal voltage adaptation and several low-power modes.

Ultra-low-power platform
1.65 V to 3.6 V power supply
-40 to 125 °C temperature range
0.29 μA Standby mode (3 wakeup pins)
0.43 μA Stop mode (16 wakeup lines)
0.86 μA Stop mode + RTC + 20-Kbyte RAM retention
Down to 93 μA/MHz in Run mode
5 μs wakeup time (from Flash memory)
41 μA 12-bit ADC conversion at 10 kSPS