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STMicroelectronics STM32U073MBT6
- Part No.:
- STM32U073MBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
STM32U073MBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,236
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Product details
Overview
STM32U073MBT6 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. It targets battery-powered IoT sensors, portable medical devices, and smart utility meters requiring sub-μA standby operation and robust analog integration.
For engineers reviewing the STM32U073MBT6 datasheet, STM32U073MBT6 pinout, STM32U073MBT6 application, or STM32U073MBT6 equivalent, key selection criteria include VBAT mode current (130 nA), Stop 2 mode consumption (695–825 nA), 12-bit ADC with 0.4 µs conversion, embedded op-amp with PGA, and LQFP48 package compatibility with 69 GPIOs and 6 wake-up pins.
Technical Context
The device integrates an ART Accelerator enabling 0-wait-state execution from flash at 56 MHz, delivering 2.4 CoreMark/MHz and 407 ULPMark™-CP. Its power architecture employs dual regulators (MR/LPR) and supports six low-power modes-including Shutdown (16 nA), Standby (30–160 nA), and Stop 2 (695 nA)-with RTC retention and 4 µs wake-up latency.
Peripherals are partitioned across independent power domains: VDDA supplies ADC/DAC/OPAMP/comparators; VDDUSB powers the crystal-less USB PHY; VBAT sustains RTC and 9×32-bit backup registers. The MCU includes a 96-bit unique ID, true random number generator (NIST SP 800-90B candidate), and Arm PSA Level 1/SESIP Level 3 security certification readiness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 56 MHz max - deterministic real-time control with MPU for RTOS task isolation |
| Flash / SRAM | 256-Kbyte single-bank flash with RDP Level 2 protection; 40-Kbyte SRAM (32 KB + 8 KB) with hardware parity - enables safe firmware updates and ECC-protected data logging |
| Ultra-Low-Power Modes | Shutdown: 16 nA; Standby (no RTC): 30 nA; Stop 2 (no RTC): 695 nA - extends coin-cell battery life to >10 years in metering applications |
| Analog Peripherals | 1×12-bit ADC (0.4 µs conv.), 1×12-bit DAC, 2×ULP comparators, 1×OPAMP with PGA (gain up to 16) - supports sensor signal conditioning without external components |
| Communication | USB 2.0 FS crystal-less, 4×I²C (up to 1 Mbit/s), 7×USART/LPUART, 3×SPI - enables direct USB connectivity and multi-sensor UART daisy-chaining |
| Package & I/O | LQFP48 (7 × 7 mm), 69 fast I/Os (most 5 V-tolerant), 6 wake-up pins - fits compact industrial HMI designs with mixed-voltage interfacing |
| Security | Secure boot, 128-bit password-based RDP regression, 5 anti-tamper pins, TRNG - meets IEC 62443-3-3 SL2 requirements for secure firmware boot |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), ECOPACK2-compliant, with exposed thermal pad. Pinout validated per DS14548 Rev 2 (pages 42–45).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply / ground | 1.71–3.6 V core/I/O supply; decoupling required per datasheet layout guidelines |
| VDDA, VSSA | Analog power supply / ground | Independent 1.62–3.6 V supply for ADC/DAC/OPAMP - must be filtered separately to avoid noise coupling |
| VBAT | Backup domain supply | 1.55–3.6 V input sustaining RTC and 9×32-bit registers during main power loss |
| PA11/PA12 | USB D+/D− | Crystal-less USB 2.0 full-speed transceiver - no external oscillator needed for enumeration |
| PC13/PC14/PC15 | RTC_OUT / OSC32_IN / OSC32_OUT | 32 kHz RTC clock domain - enables calendar, alarms, and calibration with <±1 ppm stability |
| PF0–PF1 | Tamper inputs | 5 dedicated passive tamper detection pins - trigger immediate erase of sensitive registers on physical intrusion |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Enables 0-wait-state flash execution at 56 MHz - eliminates performance penalty of internal memory access |
| Batch Acquisition Mode (BAM) | Reduces CPU intervention during ADC sampling sequences - cuts active time by >60% in sensor polling loops |
| Embedded LCD Controller | Drives 8×48 or 4×52 segments with integrated step-up converter - eliminates external boost IC in portable displays |
| Capacitive Sensing | 21-channel CSD supporting touchkey/linear/rotary sensors - enables UI controls with <10 µA active current |
| USB Crystal-less Architecture | Uses internal 48 MHz HSI48 trimmed by LSE - removes 12 MHz crystal and matching capacitors, reducing BOM cost and board area |
Applications
| Smart Utility Metering | Portable Medical Sensors |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meters with daily RF transmission and decade-long battery life. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC, RTC calendar, LCD display, and sub-GHz RF transceiver wake-up scheduling. Use Value: 30 nA Standby current and 4 µs wake-up enable 15-year CR2032 battery life while maintaining accurate timekeeping and tamper detection. | Use Scenario: Wearable ECG/SpO₂ monitors requiring clinical-grade analog front-end and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Signal acquisition hub digitizing analog biosignals via 12-bit ADC + PGA, buffering data in parity-protected SRAM, and triggering BLE transmission on event. Use Value: Integrated op-amp with gain up to 16 and 0.4 µs ADC conversion eliminate external instrumentation amps, reducing size and power by 35%. |
| Industrial Wireless Sensor Nodes | Low-Power HMI Panels |
Use Scenario: Dust-proof, temperature-hardened nodes monitoring vibration, humidity, and pressure in factory environments. IC Role / Device Role / Timing Role: Edge-processing node executing FFT on accelerometer data, storing logs in flash, and waking LoRaWAN radio only on threshold breach. Use Value: Stop 2 mode (695 nA) with RTC alarm and 3x low-power timers allows precise duty-cycled sensing without external real-time scheduler. | Use Scenario: Handheld configuration tools for HVAC controllers with segmented LCD and tactile buttons. IC Role / Device Role / Timing Role: Display manager driving 4×52 LCD segments, scanning capacitive keys, and handling USB-CDC debug interface. Use Value: Integrated LCD controller with internal step-up converter reduces component count by 4 (boost IC, inductor, diode, capacitor) and saves 12 mm² PCB area. |
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 56 MHz Cortex-M0+, but 192-Kbyte flash, no USB crystal-less, higher 120 nA Standby current | Lacks integrated USB PHY and LCD controller - requires external transceiver and display driver IC | Select when USB connectivity is unnecessary and cost-sensitive BOM prioritizes flash density over peripheral integration |
| RA2E2A8A20FJ | Renesas RA2E2 with 64 MHz Cortex-M23, 128-Kbyte flash, 16-Kbyte SRAM, 110 nA Standby, no LCD or crystal-less USB | No analog op-amp or LCD controller - needs external signal conditioning and display interface | Choose for enhanced security (TrustZone) and higher CPU throughput where analog/LCD integration is handled externally |
Compared with STM32L073RZT6 and RA2E2A8A20FJ, the STM32U073MBT6 uniquely combines crystal-less USB, LCD driver, and embedded op-amp in a single LQFP48 package-reducing total system BOM count by up to 7 components while achieving industry-leading 30 nA Standby current with RTC retention.
Availability
STM32U073MBT6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial wireless sensor nodes, and low-power HMI panels requiring stable component supply and long-term lifecycle support.
Supply support for STM32U073MBT6 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, sensors, and automotive semiconductors since 1987.
The STM32U0 series targets ultra-low-power embedded applications demanding sub-μA runtime, secure firmware execution, and high analog integration - specifically engineered for battery-operated IoT endpoints and energy-harvesting systems.
FAQ
What is the minimum supply voltage for reliable operation of STM32U073MBT6?
The STM32U073MBT6 operates reliably from 1.71 V to 3.6 V on VDD. Below 1.71 V, brownout reset (BOR) activates to prevent undefined behavior. The internal LDO regulator maintains stable VCORE down to 1.71 V, and VDDA must be ≥1.62 V for ADC operation or ≥2.4 V for VREFBUF activation.
Does STM32U073MBT6 support USB without an external crystal?
Yes. STM32U073MBT6 integrates a crystal-less USB 2.0 full-speed PHY using the internal 48 MHz HSI48 oscillator, auto-trimmed by the 32 kHz LSE crystal. This eliminates the need for a 12 MHz external crystal and associated load capacitors, reducing BOM cost and PCB footprint.
How many GPIOs are available in the LQFP48 package, and which are 5 V-tolerant?
The STM32U073MBT6 in LQFP48 provides 69 GPIOs, of which 68 are 5 V-tolerant (all except PA13, PA14, PA15, PB3, PB4 used for SWD debugging). This allows direct interfacing with legacy 5 V logic and industrial sensors without level shifters.
Can the embedded op-amp be used with the ADC for programmable gain amplification?
Yes. The integrated operational amplifier includes a built-in programmable gain amplifier (PGA) with selectable gains up to 16. Its output can be routed directly to the 12-bit ADC input channel, enabling calibrated, low-noise signal conditioning for precision sensor interfaces without external components.
STM32U073MBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
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- EEPROM Size:
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- RAM Size:
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- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
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- Operating Temperature:
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- Grade:
- -
- Qualification:
- -
- Mounting Type:
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- Supplier Device Package:
STM32U073MBT6 FAQ
1.How can I place an order for STM32U073MBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32U073MBT6 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 STM32U073MBT6 reliable?
The price and inventory of STM32U073MBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32U073MBT6 is usually 5 days.
3.What payment methods are accepted for STM32U073MBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32U073MBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32U073MBT6?
STM32U073MBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32U073MBT6 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 STM32U073MBT6?
For technical support, including STM32U073MBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32U073MBT6 requirements.
6.How does Aetrix verify that STM32U073MBT6 is sourced from the original manufacturer or authorized distributors?
All STM32U073MBT6 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 STM32U073MBT6 meets industry standards.
7.What is the process for return or replacement of STM32U073MBT6?
All STM32U073MBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32U073MBT6, 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 STM32U073MBT6 part is unused and in its original packaging.
Return procedure for STM32U073MBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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