STMicroelectronics reveals STM32U3 microcontrollers extending ultra-low power innovation for remote, smart and sustainable applications
STMicroelectronics (NYSE: STM) has unveiled its new STM32U3 microcontrollers (MCUs), designed for ultra-low power applications in remote locations. These MCUs achieve record-breaking performance-per-watt efficiency, doubling the efficiency compared to the previous generation.
The new MCUs are specifically targeted at IoT devices that require extended operation without maintenance, powered by coin cells or ambient energy sources. Key applications include utility meters, healthcare devices, animal care monitors, forest-fire sensors, and industrial sensors.
Notable features include:
- Market-leading Coremark-per-milliwatt score of 117
- Dynamic power consumption as low as 10µA/MHz
- Stop current of 1.6µA
- Up to 1MB Flash memory and 256kB SRAM
- Enhanced security with in-factory secret key provisioning
- Pricing starts at $1.93 for 10,000-piece orders
STMicroelectronics (NYSE: STM) ha presentato i suoi nuovi microcontrollori STM32U3 (MCU), progettati per applicazioni a ultra-basso consumo energetico in località remote. Questi MCU raggiungono un'efficienza per watt senza precedenti, raddoppiando l'efficienza rispetto alla generazione precedente.
I nuovi MCU sono specificamente destinati a dispositivi IoT che richiedono un funzionamento prolungato senza manutenzione, alimentati da batterie a moneta o fonti di energia ambientale. Le applicazioni chiave includono contatori, dispositivi sanitari, monitor per la cura degli animali, sensori di incendi boschivi e sensori industriali.
Caratteristiche notevoli includono:
- Punteggio Coremark-per-milliwatt leader di mercato di 117
- Consumo energetico dinamico fino a 10µA/MHz
- Corrente di stop di 1.6µA
- Fino a 1MB di memoria Flash e 256kB di SRAM
- Sicurezza avanzata con provisioning di chiavi segrete in fabbrica
- Prezzi a partire da $1.93 per ordini di 10.000 pezzi
STMicroelectronics (NYSE: STM) ha presentado sus nuevos microcontroladores STM32U3 (MCU), diseñados para aplicaciones de ultra-bajo consumo energético en ubicaciones remotas. Estos MCU logran una eficiencia récord de rendimiento por vatio, duplicando la eficiencia en comparación con la generación anterior.
Los nuevos MCU están específicamente dirigidos a dispositivos IoT que requieren un funcionamiento prolongado sin mantenimiento, alimentados por pilas de botón o fuentes de energía ambiental. Las aplicaciones clave incluyen medidores de servicios públicos, dispositivos de atención médica, monitores de cuidado animal, sensores de incendios forestales y sensores industriales.
Características notables incluyen:
- Puntuación de Coremark por milivatio líder en el mercado de 117
- Consumo de energía dinámico tan bajo como 10µA/MHz
- Corriente de parada de 1.6µA
- Hasta 1MB de memoria Flash y 256kB de SRAM
- Seguridad mejorada con provisión de claves secretas en fábrica
- Precios a partir de $1.93 para pedidos de 10,000 piezas
STMicroelectronics (NYSE: STM)는 원격 위치에서 초저전력 애플리케이션을 위해 설계된 새로운 STM32U3 마이크로컨트롤러(MCU)를 공개했습니다. 이 MCU는 이전 세대에 비해 효율성을 두 배로 늘리며 와트당 성능에서 기록적인 효율성을 달성합니다.
새로운 MCU는 동전형 배터리나 주변 에너지원으로 전원이 공급되는 유지보수 없이 장기간 작동해야 하는 IoT 기기를 위해 특별히 설계되었습니다. 주요 응용 프로그램으로는 유틸리티 미터, 의료 기기, 동물 관리 모니터, 산불 센서 및 산업 센서가 포함됩니다.
주요 특징은 다음과 같습니다:
- 시장 선도적인 밀리와트당 Coremark 점수 117
- 최저 10µA/MHz의 동적 전력 소비
- 1.6µA의 정지 전류
- 최대 1MB 플래시 메모리 및 256kB SRAM
- 공장에서 비밀 키를 제공하는 강화된 보안
- 10,000개 주문 시 가격은 $1.93부터 시작
STMicroelectronics (NYSE: STM) a dévoilé ses nouveaux microcontrôleurs STM32U3 (MCU), conçus pour des applications à ultra-basse consommation dans des endroits éloignés. Ces MCU atteignent une efficacité record en termes de performance par watt, doublant l'efficacité par rapport à la génération précédente.
Les nouveaux MCU sont spécifiquement destinés aux appareils IoT nécessitant un fonctionnement prolongé sans entretien, alimentés par des piles bouton ou des sources d'énergie ambiantes. Les applications clés incluent les compteurs, les dispositifs de santé, les moniteurs de soins animaliers, les capteurs d'incendie de forêt et les capteurs industriels.
Les caractéristiques notables incluent :
- Score Coremark par milliwatt leader sur le marché de 117
- Consommation d'énergie dynamique aussi basse que 10µA/MHz
- Courant d'arrêt de 1.6µA
- Jusqu'à 1 Mo de mémoire Flash et 256 Ko de SRAM
- Sécurité améliorée avec provisionnement de clés secrètes en usine
- Prix à partir de 1,93 $ pour des commandes de 10 000 pièces
STMicroelectronics (NYSE: STM) hat seine neuen STM32U3-Mikrocontroller (MCUs) vorgestellt, die für ultra-niedrigenergie Anwendungen an abgelegenen Standorten entwickelt wurden. Diese MCUs erreichen eine rekordverdächtige Effizienz pro Watt und verdoppeln die Effizienz im Vergleich zur vorherigen Generation.
Die neuen MCUs sind speziell auf IoT-Geräte ausgerichtet, die einen längeren Betrieb ohne Wartung erfordern und von Knopfzellen oder Umgebungsenergiequellen betrieben werden. Wichtige Anwendungen umfassen Zähler, Gesundheitsgeräte, Tierpflege-Monitore, Waldbrand-Sensoren und Industriesensoren.
Bemerkenswerte Merkmale sind:
- Marktführender Coremark-pro-Milliwatt-Wert von 117
- Dynamischer Stromverbrauch von nur 10µA/MHz
- Stop-Strom von 1.6µA
- Bis zu 1MB Flash-Speicher und 256kB SRAM
- Erweiterte Sicherheit mit der Bereitstellung geheimer Schlüssel in der Fabrik
- Preise ab $1.93 für Bestellungen von 10.000 Stück
- Record-breaking power efficiency with 117 Coremark-per-milliwatt score
- 50% improvement in power efficiency vs previous generation
- Ultra-low power consumption at 10µA/MHz
- Enhanced security features with factory-provisioned keys
- Competitive pricing at $1.93 per unit (10k+ orders)
- None.
Insights
STMicroelectronics' new STM32U3 microcontroller series represents a significant technical advancement in the ultra-low-power MCU space. The doubling of performance-per-watt efficiency compared to their previous generation creates compelling differentiation in the competitive IoT semiconductor market.
The near-threshold chip design technology delivering 117 Coremark-per-milliwatt addresses critical power constraints in remote IoT deployments, potentially unlocking new use cases where battery life previously adoption. This positions ST favorably against competitors like Texas Instruments, NXP, and Renesas in the growing IoT edge computing market.
Equally important are the enhanced security features, including secure key storage and factory provisioning of attestation credentials. These align with upcoming European RED and CRA regulations, providing customers with compliance-ready solutions and reducing their development burden.
The
The customer testimonial from smaXtec validates the real-world benefits for energy-constrained applications, demonstrating the practical value of ST's efficiency innovations for extending functionality while maintaining battery life requirements.
STMicroelectronics reveals STM32U3 microcontrollers extending ultra-low power innovation for remote, smart and sustainable applications
- Latest MCUs leverage cutting-edge near-threshold chip design to set record performance-per-watt efficiency benchmark
- Secret-key protection and in-factory provisioning boost cyber security
- Typical applications include utility meters, healthcare devices, and industrial sensors
Geneva, Switzerland, March 4, 2025 – STMicroelectronics (NYSE: STM), a global semiconductor leader serving customers across the spectrum of electronics applications, has introduced new STM32U3 microcontrollers (MCUs) with cutting-edge power-saving innovations that ease deployment of smart connected tech, especially in remote locations.
The latest MCUs are aimed at IoT devices, which must typically operate for extended periods without maintenance and with limited energy from a coin cell or ambient solar or thermoelectric source. Typical applications that depend on the lowest possible power consumption include utility meters, healthcare devices such as glucose meters and insulin pumps, animal care monitors, forest-fire sensors, and industrial sensors including thermostats and smoke detectors. STM32U3 MCUs are also used in consumer products such as smart watches, wearables, and hearables.
“The STM32U3 series builds on the heritage of ST-established ultra-low-power general-purpose microcontroller class as it is known today, which opened the door to widespread diffusion of smart technology in diverse environments,” commented Patrick Aidoune, General-Purpose MCU Division General Manager, STMicroelectronics. “Leveraging innovative techniques such as recent advancements in near-threshold design, the new devices cut dynamic power consumption to the bone, boosting efficiency by a factor of two compared to our previous generation, hence contributing to companies’ sustainability goals.”
In addition to its extreme energy efficiency, the STM32U3 series meets the needs of IoT devices by providing robust cyber protection using the latest hardware security techniques. The MCUs are designed to confine secret keys permanently in secure memory, eliminating vulnerable CPU fetches. In addition, attestation credentials for each device are provisioned by ST at manufacture before leaving the factory, which strengthens security and simplifies provisioning. All those security mechanisms, in addition to the SESIP3 and PSA Level3 certifiable security assets, such as cryptographic accelerators, TrustZone® isolation, random generator, and product lifecycle will contribute and enable ST customers to reach compliancy towards the upcoming RED and CRA regulations.
Customer testimonials:
“STM32U3 enables us [smaXtec] to bring our hardware for animal health monitors to the next level. The consumption in active mode is extremely low, only a few µA/MHz, which enables us to reduce the energy needed for current data processing algorithms while at the same time adding new features to our products. In addition, its advanced range of low-power modes lets us put the device into deep sleep if no data is processed. The newly implemented STOP3 mode, including its wakeup capabilities, is a neat way to keep power consumption low,” said Manuel Frech, Product Development Engineer, smaXtec.
Technical Notes for Editors
ST has set the pace in ultra-low-power (ULP) MCUs with previous STM32 variants and is now taking ULP performance to a new level with the new STM32U3 series. Leveraging advanced power-saving chip design, fine-tuned with AI-enhanced tools, and the latest Arm® Cortex®-M33 core running at up to 96MHz, the new MCUs achieve the market-leading Coremark-per-milliwatt score of 117. This is almost twice the efficiency of ST’s preceding STM32U5 series, and five times that of the STM32L4 series.
- STM32U3 MCUs set new standards in dynamic performance by taking advantage of near-threshold technology that operates IC transistors at extremely low voltage, saving energy proportionately according to a square law
- ST’s innovative near-threshold implementation uses AI-driven adaptive voltage scaling at wafer level to compensate for process variations in the foundry
- In addition to dynamic power savings (down to 10µA/MHz), the STM32U3 series achieve extremely low stop current, at 1.6µA
- STM32U3 embeds up to 1MB of Flash memory dual-bank and 256kB of SRAM
- In terms of security, STM32U3 MCUs embed all successful security features of the STM32U5, with additional keystore capabilities. Newly, secret keys are loaded in-factory by ST on the STM32U3 MCUs and are protected by a coupling and chaining bridge (CCB), representing the first use of this technology in the STM32 MCU family
- Two product lines are available, presenting a choice of MCUs either with or without a hardware cryptographic accelerator
- Combined with their low power, the devices integrate efficient and high-performing peripherals including the latest I3C digital connectivity
- MCUs are available in commercial (-40°C to 85°C) and extended industrial
(-40°C to 105°C) temperature ranges
The STM32U3 series is in production now and available from
STM32 is a registered and/or unregistered trademark of STMicroelectronics International NV or its affiliates in the EU and/or elsewhere. In particular, STM32 is registered in the US Patent and Trademark Office.
About STMicroelectronics
At ST, we are 50,000 creators and makers of semiconductor technologies mastering the semiconductor supply chain with state-of-the-art manufacturing facilities. An integrated device manufacturer, we work with more than 200,000 customers and thousands of partners to design and build products, solutions, and ecosystems that address their challenges and opportunities, and the need to support a more sustainable world. Our technologies enable smarter mobility, more efficient power and energy management, and the wide-scale deployment of cloud-connected autonomous things. We are on track to be carbon neutral in all direct and indirect emissions (scopes 1 and 2), product transportation, business travel, and employee commuting emissions (our scope 3 focus), and to achieve our
Further information can be found at www.st.com.
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Attachments
- P4678S -- Mar 4 2025 -- STM32U3 MCU series_FINAL FOR PUBLICATION
- P4678S -- Mar 4 2025 -- STM32U3 MCU series_IMAGE
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