STMicroelectronics reveals advanced ultra-low-power STM32 microcontrollers for industrial, medical, smart-metering, and consumer applications - Seite 2

One lead customer, in the security-systems market, is using the STM32U0 in security cameras to wake the device when motion is detected and thus enhance surveillance while saving energy. Another has created ultra-long-lasting smoke detectors, while a further application, by Ascoel, is using the STM32U0 to manage power-conscious functions of a water meter.

“Ascoel builds a wide range of innovative electronic devices with a focus on IoT technologies. We are working to design an ultrasonic water meter, with battery lasting for more than 10 years, integrating an LCD screen for real-time data, as well as the necessary security,” said Francesco Cerretani, Senior Software Developer, Ascoel. “We found that the STM32U0 was the perfect solution, supporting our goal to create a low-cost, ultra-low-power, easy-to-install, zero maintenance, precise water meter. When deployed at scale in the customer’s grid, it will improve control over water leakage and contribute to reducing the environmental impact.”

The STM32U0 enhances cost-effectiveness by providing an LCD segment display controller. Devices with an LCD, like Ascoel’s water meter as well as thermostats, smart retail labels, access-control panels, and factory automation can take advantage of this to reduce the cost of their PCB. Additional value-added features of STM32U0 MCUs include numerous analog peripherals like analog-to-digital converters (ADC), digital-to-analog converters (DAC), operational amplifiers, and comparators. There is also an on-chip system oscillator that helps cut the bill of materials to save costs and PCB space.

STM32U0 devices are the first MCUs running on Arm Cortex-M0+ targeting SESIP Level 3 and PSA level 1 focusing on firmware code protection. Certification provides an independent assurance of the STM32U0 security capabilities that product manufacturers can leverage to comply with the coming voluntary US Cyber Trust Mark and mandatory EU Radio Equipment Directive (RED).

Developers can also take advantage of up to 256KB of Flash, package options up to 81 pins, and 56MHz core speed, which are generous specifications for this class of device.

The STM32U0 series is in production now and ST is making the new devices available at an attractive price point starting at $0.68 for 1,000 units. Sample requests and further pricing options are available from local ST sales offices.