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New STM32 Ultra-Low-Power Microcontrollers from STMicroelectronics Deliver Industry’s Best Solution for Energy-Sensitive Designs

Rich development ecosystem helps designers cut power consumption to the bone
Geneva

The latest STM32L0 microcontrollers from STMicroelectronics, now fully qualified and in stock at ST and at appointed distributors, enable customers’ applications to achieve record low power consumption, The micros leverage a combination of the energy-efficient ARM® Cortex®-M0+ core, optimized architecture, power-management modes, ultra-low-power peripherals, support for energy-saving USB features, and proprietary ultra-low-power process technology to keep applications running.

With run consumption down to 87µA/MHz, 440nA stop mode with full RAM data retention, a low-power time counter, and fast wakeup time of 3.5µs the STM32L0 allows applications to maximize use of energy-saving modes. The STM32L0 series enables designers of products such as computer peripherals, healthcare monitors and trackers, industrial sensors, and smart-home devices to deliver market-leading battery life and create slim and lightweight new styles. Where other devices suffer rapidly increasing current consumption at higher temperatures, ST’s unique process technology maintains stability over a wide temperature range, ensuring these devices offer the world’s lowest power consumption at 125°C. The STM32L0 series also has the world’s lowest Analog-to-Digital Converter (ADC) power consumption. The 12-bit on-chip ADC draws only 48µA when operating at 100ksample/s. Built-in hardware oversampling increases the ADC resolution to 16-bits.

Over 30 part numbers offer basic entry-level configurations as well as variants featuring USB connectivity with the option of an LCD controller up to 8x28. USB full-speed enabled devices support crystal-less operation, USB Battery Charger Detection (BCD), and energy-saving Link Power Management (LPM).

Enhanced STM32CubeMX design tools, including the Power Consumption Calculator wizard now support the STM32L0, helping designers use the new devices to reach ultra-low power-consumption targets. STM32CubeMX helps accelerate generation of initialization code and simplifies porting of designs between different STM32 devices. A new STM32L0 Nucleo board featuring Morpho and Arduino-compatible connectors and fully supported by mbed.org will be also available in mid 2014.

ST will further enrich the STM32L0 ecosystem with a Discovery kit that will host an ePaper display as well as a linear capacitive touch and self-test measurement system enabling users to measure MCU power consumption in real-time. The STM32L0 Discovery-kit will also be available in mid 2014. Both STM32L0 Nucleo board and Discovery-kit feature an ST-Link/V2 hardware debugger.

Optimized sample-code snippets dedicated to STM32L0 MCUs will also be available for both the Nucleo board and Discovery kit, providing further help for designers seeking the lowest power-consumption profile.

Priced from $0.93 for high volume orders, the new STM32L0 microcontrollers are offered in various package options from 2.7mm x 2.7mm WLCSP36 to 10mm x 10mm LQFP64, and with up to 64KByte of Flash, 8KByte of SRAM, and 2KByte of EEPROM.

For engineers in Europe, ST is hosting a series of free seminars on ultra-low-power microcontroller-based firmware designs with a focus on RF. Attendees get a free STM32 L0 Nucleo kit and the M24SR NFC/RFID memory shield.

Note to Editors:
The STM32L0 series sits between the ultra low-power STM8L 8-bit microcontrollers and the pin-compatible STM32L family based on the 32-bit Cortex-M3 core. ST now offers one of the largest portfolios of ultra low-power microcontrollers based on the ARM Cortex-M architecture, extending from 32KByte to 512KByte of Flash with up to 80KByte of RAM and package options from 32 pins to 144 pins. ST provides a portfolio of Nucleo boards, Evaluation boards, and Discovery kits to aid evaluation of STM32L0 and STM32L1 families.

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