New STM32 ultra low-power microcontrollers target energy-sensitive designs - Embedded.com

New STM32 ultra low-power microcontrollers target energy-sensitive designs

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 process technology maintains stability over a wide temperature range, ensuring these devices offer what the company claims is the world’s lowest power consumption at 125°C. The STM32L0 series also has a claimed 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.

Enhanced STM32Cube MX 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. STM32Cube MX 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.

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.

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