STMicroelectronics Reveals Extreme
Low-Power STM32U5 Microcontrollers with Advanced Performance and
Cybersecurity
- Efficient 40nm process technology and power-saving innovations
minimize energy consumption in all modes
- Features Arm® embedded core and advanced cybersecurity,
graphics, and peripherals for demanding consumer and industrial
applications
Geneva, February 25, 2021 – STMicroelectronics (NYSE:
STM), a global semiconductor leader serving customers
across the spectrum of electronics applications, has announced a
new generation of extreme power-saving microcontrollers (MCUs), the
STM32U5* series, to meet the most demanding power/performance
requirements for smart applications including wearables, personal
medical devices, home automation, and industrial sensors.
The industry-leading STM32 MCUs, built upon the highly
energy-efficient Arm® Cortex®-M processors, are already in billions
of domestic appliances, industrial controls, computer peripherals,
communication devices, and equipment managing smart cities and
infrastructure.
The new STM32U5 series teams the efficient Arm Cortex-M33 core
with ST’s innovative proprietary power-saving features and on-chip
IP cutting down energy demand while pumping up performance. The
line also adds new state-of-the-art features needed by today’s
applications, including advanced cybersecurity with new
hardware-based protection targeting PSA and SESIP (Security
Evaluation Standard for IoT Platforms) assurance level 3, as well
as graphics accelerators for rich user experiences.
“ST has almost doubled its share of global microcontroller sales
in the last five years, shipping more than two billion
ultra-low-power STM32 devices to date. With our low-power expertise
and focus, we are particularly strong in the ultra-low-power
category with about 25% of that market,” said Ricardo de Sa Earp,
Group Vice President, Microcontroller Division General Manager,
STMicroelectronics. “We expect our STM32U5 microcontrollers to be
even more popular, enabling our customers to create new smart
consumer and industrial products that deliver superior energy
rating, performance, and cyberprotection.”
“Today’s smart applications need to be power efficient and built
on a secure foundation,” said Mohamed Awad, vice president, IoT
Business, Arm. “ST has incorporated Arm technology into its latest
MCUs, taking energy efficiency and security to the next level,
while developers can also utilize the Arm Keil® MDK for ultimate
energy optimization.”
ST has also created the STM32U5 IoT Discovery Kit
(B-U585I-IOT02A) that combines the MCU with a Wi-Fi® module,
Bluetooth® module, and various sensors. Microsoft has chosen this
kit as reference board for the new Azure Certified Device program.
“The STM32U5 provides an excellent platform for delivering Azure
IoT services via Azure RTOS leveraging the advanced features of
STM32U5 microcontroller,” said Sam George, Corporate Vice
President, Azure IoT at Microsoft Corporation. The kit will be
available to order later in the year.
Among lead customers for the STM32U5, Twilio, the leading cloud
communications platform, has used the MCUs to create an innovative
IoT device-builder platform called Microvisor. Jonathan Williams,
Lead Product Manager at Twilio, commented, “Being among the first
developers to start using the STM32U5 has given Twilio Microvisor
that unique combination of extreme low power, efficient
performance, and advanced cybersecurity that Twilio customers are
asking for.”
STM32U5 MCUs are sampling now to lead customers and will be in
full production in September 2021. Budgetary pricing starts at
$3.60. A broad choice of packages including a 4.2mm x 3.95mm WLCSP
and 7mm x 7mm UQFN48 and UFBGA169 will be available.
Further Technical Information
Power-Saving Features The microcontrollers
introduce an innovative autonomous mode that lets direct memory
access (DMA) and peripherals keep working while most of the device
sleeps, to save power. Granular control over operating modes allows
part of the MCU’s memory to be turned off, to avoid powering unused
cells. In addition, STM32U5 MCUs are manufactured using 40nm
process geometry, the most advanced node suitable for MCUs, which
saves power in dynamic operating modes as well as power-saving
modes.
There are also proven features from the preceding STM32L0,
STM32L4, and STM32L5 ultra-low-power MCUs. These include dynamic
voltage scaling, which optimizes energy consumption according to
the workload, and the ST ART Accelerator™ to read Flash memory
efficiently. An update to the ST ART Accelerator now allows reading
of off-chip Flash as well as the MCU’s internal memory.
By Integrating an advanced DC/DC converter and low-dropout (LDO)
regulator, connected in parallel and selectable on-the-fly, STM32U5
MCUs can cut dynamic power consumption to less than 19µA/MHz.
Upgraded Peripherals In addition to saving
power, designers can tackle demanding applications leveraging new
features such as greater Flash density, now with up to 2MB on chip
and fast interfaces to off-chip memory for further expansion. Up to
0.5MB of on-chip Flash has increased cycle life, up to 100,000
read/write cycles to assure reliable storage of user data.
An advanced high-speed 14-bit analog-to-digital converter (ADC)
is provided, ready for next-generation sensing and tracking
applications.
A Multi-function Digital Filter (MDF) and Audio Digital Filter
(ADF) upgrade the capabilities of ST’s proven Digital Filter for
Sigma-Delta Modulator (DFSDM). By boosting performance in
sound-activity detection, these now enable users to infuse AI into
low-cost, low-power microcontroller-based use cases. Moreover, with
Error Correction Code (ECC) memory as part of the device’s RAM,
STM32U5 MCUs can also fulfil safety-centric applications.
Enhanced Cybersecurity Building on the
cybersecurity focus of the STM32L5, which includes a Cortex-M33
core with Arm TrustZone® technology and an ST-specific security
feature set, the STM32U5 series introduces new and state-of-the-art
innovations:
- AES encryption and Public Key Authorization (PKA) are now
hardware resistant to side-channel attacks by Differential Power
Analysis (DPA)
- Secure data storage with a Hardware Unique Key (HUK)
- Active tamper detection
- Internal monitoring that can erase secret data in the event of
perturbation attacks helps meet the PCI Security Standards Council
(PCI SSC) requirements for Point Of Sales (POS) applications.
New Ecosystem Resources Azure RTOS will be
integrated in the STM32Cube software suite, with configuration
features in STM32CubeMX and STM32CubeIDE tools and addition of
examples, bringing additional key benefits to STM32Cube such as
fast performance and industry certifications.
The B-U585I-IOT02A Discovery Kit will enable a wide diversity of
applications by exploiting low-power communication, multiway
sensing and direct connection to cloud servers. It includes Wi-Fi
and Bluetooth modules, as well as microphones, temperature and
humidity, magnetometer, accelerometer and gyroscope, pressure,
Time-of-Flight and gesture-detection sensors.
You can also read our blogpost at
https://blog.st.com/stm32u5-microvisor/
*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 46,000 creators and makers of semiconductor
technologies mastering the semiconductor supply chain with
state-of-the-art manufacturing facilities. An independent device
manufacturer, we work with more than 100,000 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 the Internet of Things and 5G
technology. Further information can be found at www.st.com.
For Press Information Contact: Michael
Markowitz Director Technical Media Relations STMicroelectronics
Tel: +1 781 591 0354 Email: michael.markowitz@st.com
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