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STMicroelectronics STM32U073RBT6
- Part No.:
- STM32U073RBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
STM32U073RBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
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Product details
Overview
STM32U073RBT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller operating up to 56 MHz, featuring 256-Kbyte flash memory, 40-Kbyte SRAM with hardware parity, USB 2.0 full-speed crystal-less interface, and integrated LCD driver supporting 8×48 segments - deployed in battery-powered medical sensors and portable industrial monitors.
For engineers reviewing the STM32U073RBT6 datasheet, STM32U073RBT6 pinout, STM32U073RBT6 application, or STM32U073RBT6 equivalent, key selection criteria include VBAT mode current (130 nA), Stop 2 mode consumption (695 nA without RTC), 12-bit ADC conversion time (0.4 µs), 16-channel capacitive sensing support, and LQFP64 package compatibility with 69 GPIOs (6 wake-up capable).
Technical Context
The STM32U073RBT6 integrates an ART Accelerator enabling 0-wait-state execution from flash at 56 MHz, coupled with dual-regulator power management (MR/LPR) that dynamically selects between main and low-power regulators based on active mode - ensuring sub-µA retention in Stop 2 and Standby modes. Its analog subsystem uses independent VDDA supply (1.62–3.6 V) for ADC, DAC, OPAMP, and comparators, decoupling precision analog operation from digital noise.
Core peripherals include a 32-bit general-purpose timer, three 16-bit low-power timers (available in Stop mode), one 16-bit advanced motor-control timer, and a 12-channel DMA controller with flexible mapping via DMAMUX - all synchronized through a 32-bit multi-AHB bus matrix and APB interconnect. Security features include Arm® PSA Level 1 and SESIP Level 3 candidate certification, true random number generation (NIST SP 800-90B candidate), and 5 passive anti-tamper pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 56 MHz max - delivers 2.4 CoreMark/MHz (134 total) and deterministic real-time interrupt handling. |
| Memory | 256-Kbyte flash (code/data), 40-Kbyte SRAM (32 KB + 8 KB, both with hardware parity) - enables functional safety compliance and secure boot partitioning. |
| Power Modes | Shutdown: 16 nA; Standby (no RTC): 30 nA; Stop 2 (no RTC): 695 nA - supports >10-year battery life in metering and sensor nodes. |
| Analog Peripherals | 1× 12-bit ADC (0.4 µs conv.), 1× 12-bit DAC, 2× ultra-low-power comparators, 1× opamp with PGA (gain up to 16) - enables single-chip analog front-end for biosignal acquisition. |
| Communication | USB 2.0 FS crystal-less, 7× USART/LPUART, 4× I²C (up to 1 Mbit/s), 3× SPI - supports simultaneous BLE coexistence and wired diagnostics without external clock. |
| Package & I/O | LQFP64 (10 × 10 mm), 69 GPIOs (most 5 V-tolerant), 6 wake-up pins - provides layout flexibility for compact industrial HMI designs with ESD-hardened interfaces. |
| Security | RDP Level 2 (irreversible), 128-bit password regression, HDP, secure boot, 96-bit unique ID - meets IEC 62443-3-3 SL2 requirements for firmware integrity. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK2 construction; 64-pin layout optimized for signal integrity in mixed-signal PCB layouts with separate VDDA/VDDIO1 domains.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply/ground | Supplies VCORE domain; requires local 100 nF + 4.7 µF decoupling per VDD pair to stabilize LPR/MR regulator output. |
| VDDA, VSSA | Analog power supply/ground | Independent 1.62–3.6 V supply for ADC/DAC/OPAMP; must be filtered separately to maintain <1 LSB INL error. |
| VBAT | Backup power input | Enables RTC/calendar and 9×32-bit backup registers during main power loss; supports automatic VDD/VBAT switchover. |
| PA11/PA12 | USB DP/DM | Crysal-less USB 2.0 FS interface; internal transceiver eliminates need for external oscillator or PHY components. |
| PC13–PC15 | LSE oscillator inputs | Drive 32.768 kHz crystal for RTC calibration; internal load caps configurable to reduce BOM count. |
| NRST | Active-low reset | Asynchronous reset input with internal pull-up; compatible with open-drain reset supervisors and push-button debouncing circuits. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Enables 0-wait-state flash execution at 56 MHz, eliminating performance penalty of embedded flash latency in real-time control loops. |
| Batch Acquisition Mode (BAM) | Reduces CPU intervention during ADC/DAC sequences - cuts active time by >60% in periodic sensor sampling applications. |
| Capacitive Sensing | 21-channel CSD engine with built-in charge transfer and filtering - supports touchkey, slider, and rotary encoder UI without external IC. |
| Ultra-Low-Power Timers | Three 16-bit low-power timers retain operation in Stop mode - enables precise wake-up scheduling every 10 ms to 30 s without full MCU restart. |
| USB Crystal-Less Operation | Internal 48 MHz clock recovery eliminates 12 MHz crystal and matching capacitors - reduces BOM cost and board area by ≥3 mm². |
Applications
| Portable Medical Sensors | Smart Utility Meters |
|---|---|
Use Scenario: Wearable ECG patch continuously monitoring heart rate and arrhythmia over 7-day battery life. IC Role / Device Role / Timing Role: Primary MCU executing signal acquisition (ADC @ 1 kSPS), digital filtering, BLE packetization, and RTC timestamping. Use Value: 695 nA Stop 2 mode extends battery life beyond 180 days; integrated opamp with PGA enables direct electrode biasing without external amplifiers. | Use Scenario: Battery-powered gas meter logging pressure, temperature, and flow every 15 minutes for 15-year field deployment. IC Role / Device Role / Timing Role: System controller managing ultrasonic flow measurement, EEPROM logging, tamper detection, and LoRaWAN transmission. Use Value: 5 passive anti-tamper pins detect enclosure breach; VBAT-backed RTC ensures accurate billing timestamps during mains outage. |
| Industrial HMI Panels | Asset Tracking Beacons |
Use Scenario: Ruggedized handheld terminal for warehouse inventory scanning with LCD display and button interface. IC Role / Device Role / Timing Role: Display controller driving 4×52-segment LCD with internal step-up converter; handles capacitive touch and barcode decode. Use Value: Integrated LCD driver eliminates external PMIC; 21-channel CSD supports multi-button overlay with <5 mm spacing. | Use Scenario: GPS-denied indoor asset tag reporting location via UWB anchor triangulation every 30 seconds. IC Role / Device Role / Timing Role: Low-power coordinator managing UWB transceiver sleep/wake cycles, accelerometer wake-on-motion, and encrypted BLE advertisement. Use Value: 4 µs wake-up from Stop mode enables sub-100 µs response to motion events; TRNG seeds AES-128 session keys for each transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power Arm® Cortex®-M0+ microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L073RZT6 | Same LQFP64 package, but Cortex-M0 core (32 MHz), 192 KB flash, no USB crystal-less, higher active current (110 µA/MHz) | Lacks integrated USB PHY and LCD driver; suitable only where external USB bridge or segment LCD is acceptable | Select when legacy toolchain compatibility with STM32L0 series is required and USB/LCD are offloaded. |
| RA2E2A00GJ000FB | Arm® Cortex-M23 core (64 MHz), 128 KB flash, 16 KB SRAM, no LCD driver, 250 nA Stop mode, Renesas Secure IP | Higher security certification (PSA Level 2), but no capacitive sensing or analog opamp; requires external LCD controller | Select for PSA Level 2–certified firmware updates in regulated IoT deployments where analog integration is secondary. |
Compared with STM32L073RZT6 and RA2E2A00GJ000FB, the STM32U073RBT6 uniquely combines crystal-less USB, LCD driver, and 21-channel capacitive sensing in a single LQFP64 package - reducing bill-of-materials by up to 7 components in space-constrained portable HMI designs.
Availability
STM32U073RBT6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial HMI panels, and asset tracking beacons requiring stable component supply across extended product lifecycles.
Supply support for STM32U073RBT6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, MEMS, and automotive semiconductors since 1987.
The STM32U0 series targets ultra-low-power battery-operated applications demanding long service life, robust security, and high analog integration - specifically engineered for medical wearables, smart meters, and industrial edge nodes.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32U073RBT6 operates at up to 56 MHz in Run mode using the LDO regulator, consuming 52 µA/MHz. At full speed, this equates to approximately 2.91 mA total core current, excluding peripheral activity. The ART Accelerator ensures zero wait states, maintaining deterministic timing critical for real-time control loops without flash access penalties.
Does the device support hardware encryption or secure boot functionality?
Yes. The STM32U073RBT6 includes secure boot with readout protection (RDP Level 2), hardware protection feature (HDP), and a true random number generator (TRNG) certified to NIST SP 800-90B candidate standards. It is also qualified for Arm® PSA Level 1 and SESIP Level 3 certifications, enabling trusted firmware execution and cryptographic key generation directly in silicon.
Can the integrated LCD driver operate without external components?
Yes. The LCD controller supports 8×48 or 4×52 segments with an integrated step-up converter, requiring only external LCD glass and optional contrast-setting resistor. No external boost converter or voltage divider network is needed, reducing BOM count and PCB footprint in portable display applications.
How many GPIOs support wake-up capability and what are their voltage tolerances?
Six GPIOs support wake-up from Stop/Standby modes (PA0, PA1, PA2, PA3, PC13, PC14). Up to 69 GPIOs are available in the LQFP64 package, with most rated for 5 V tolerance - allowing direct interfacing with legacy 5 V logic or industrial sensors without level-shifting circuitry.
STM32U073RBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- -
- Core Size:
- -
- Speed:
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- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
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- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
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- Operating Temperature:
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- Qualification:
- -
- Mounting Type:
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- Supplier Device Package:
STM32U073RBT6 FAQ
1.How can I place an order for STM32U073RBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32U073RBT6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32U073RBT6 reliable?
The price and inventory of STM32U073RBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32U073RBT6 is usually 5 days.
3.What payment methods are accepted for STM32U073RBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32U073RBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32U073RBT6?
STM32U073RBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32U073RBT6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32U073RBT6?
For technical support, including STM32U073RBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32U073RBT6 requirements.
6.How does Aetrix verify that STM32U073RBT6 is sourced from the original manufacturer or authorized distributors?
All STM32U073RBT6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32U073RBT6 meets industry standards.
7.What is the process for return or replacement of STM32U073RBT6?
All STM32U073RBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32U073RBT6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32U073RBT6 part is unused and in its original packaging.
Return procedure for STM32U073RBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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