STMicroelectronics STM32L0 MCUs and development ecosystem

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STMicroelectronics has announced its energy-efficient ARM Cortex-M0+ STM32L0 microcontrollers, with an extensive development ecosystem including boards and software tools that help developers keep tight control of application power consumption and minimise time to market.

Suitable for energy-sensitive applications including wearables, medical monitors, industrial sensors and smart-living devices, the MCU series achieves energy efficiency of 135 ULPMark-C certified and 158.7 ULPMark-C with a DC/DC converter. ST’s process technology is highly temperature stable, ensuring the series has good power consumption at 125°C.

The three product lines include the STM32L0x1 Access Line, STM32L0x2 USB Line with crystal-less USB2.0 Full Speed and the HMI-ready STM32L0x3 USB/LCD Line. Memory densities are from 8 to 192 KB Flash, up to 20 KB SRAM and up to 6 KB true EEPROM. A 14-pin package option makes these the smallest STM32 MCUs, bringing 32-bit muscle to entry-level embedded applications.

Energy-saving features include a low-power ADC that draws only 41 µA at 12-bit resolution and 10 kSps; energy-saving modes including 340 nA Stop with full RAM retention and auto wake-up; a low-power pulse counter (16-bit timer) that remains available in ultralow power mode; and 3.5 µs wake-up from Stop. There is also an interconnect matrix that allows data handling to continue while the CPU is idle.

Software development is supported by STM32CubeMX and the STM32CubeL0 middleware and firmware suite.

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