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STMicroelectronics STM32L011F3U6TR
- Part No.:
- STM32L011F3U6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-UFQFN
- Datasheet:
-
STM32L011F3U6TR.pdf
- Description:
- IC MCU 32BIT 8KB FLASH 20UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,445
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Product details
Overview
STM32L011F3U6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN20 (3×3 mm) package, featuring 16 KB Flash, 2 KB SRAM, 512 B EEPROM with ECC, 12-bit ADC (1.14 Msps), and dual ultra-low-power comparators. It operates from 1.65–3.6 V across –40 to +125 °C and achieves 0.23 µA Standby mode with 2 wakeup pins-ideal for battery-powered sensor nodes and smart metering endpoints.
For engineers reviewing the STM32L011F3U6TR datasheet, STM32L011F3U6TR pinout, STM32L011F3U6TR application, or STM32L011F3U6TR equivalent, key selection criteria include verified low-power mode current (0.29 µA Stop), 5 µs Flash wakeup time, 23 I/Os (20 of which are 5V-tolerant), and integrated RTC with 2 KB RAM retention in Stop mode.
Technical Context
The STM32L011F3U6TR implements a single-core Arm Cortex-M0+ running at up to 32 MHz, supported by multiple clock sources: factory-trimmed 16 MHz HSI (±1%), 32 kHz LSE for RTC, and multispeed MSI (65 kHz–4.2 MHz). Its power architecture includes programmable voltage detector (PVD), brownout reset (BOR) with 5 thresholds, and dynamic voltage scaling for optimized active/low-power tradeoffs.
Peripherals are interconnected via a dedicated matrix supporting concurrent DMA transfers to ADC, USART, SPI, I²C, and timers. The device integrates a 7-channel DMA controller, CRC unit, 96-bit unique ID, and serial wire debug (SW-DP)-enabling deterministic real-time control while maintaining sub-µA quiescent current in deep-sleep states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32-bit, up to 32 MHz - delivers 0.95 DMIPS/MHz for deterministic real-time execution in resource-constrained edge nodes. |
| Memory | 16 KB Flash (with ECC), 2 KB SRAM, 512 B EEPROM (with ECC) - enables firmware updates and data logging with error resilience in harsh environments. |
| ADC | 12-bit, 1.14 Msps, 10-channel - supports high-fidelity analog sensing (e.g., temperature, voltage, current) down to 1.65 V supply without external reference. |
| Low-power modes | 0.23 µA Standby (2 wakeup pins), 0.29 µA Stop (16 wakeup lines), 0.54 µA Stop+RTC+2 KB RAM retention - extends coin-cell battery life to multi-year operation. |
| I/O capability | 28 fast I/Os (23 5V-tolerant) - simplifies interface to legacy 5V peripherals and reduces level-shifter count in mixed-voltage systems. |
| Timers | 7 timers including 16-bit general-purpose (4-channel), ultra-low-power LPTIM, SysTick, RTC, and dual watchdogs - enables precise timing, pulse generation, and safety-critical supervision. |
| Communication | 1x USART (ISO 7816/IrDA), 1x LPUART, 1x SPI (16 Mbit/s), 1x I²C (SMBus/PMBus) - supports secure smart-card comms, low-power wireless backhaul, and sensor hub connectivity. |
Pinout & Package
STM32L011F3U6TR is housed in a 20-pin UFQFPN (Ultra Thin Fine Pitch Quad Flat No-lead) package measuring 3 × 3 mm with 0.5 mm pitch. This RoHS-compliant, ECOPACK®2-qualified package supports automated optical inspection and high-density PCB layouts for space-constrained IoT endpoints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 1.65–3.6 V supply rail; decoupling required per datasheet layout guidelines to ensure stable core and analog operation. |
| VSS | Ground | Digital ground reference; separate analog ground connection recommended for optimal ADC performance. |
| NRST | Reset input | Active-low reset pin with internal pull-up; accepts 5V-tolerant logic levels and supports external reset sources or pushbutton debouncing. |
| PA0–PA9 | General-purpose I/O | Configurable GPIOs; PA0–PA7 support analog inputs (ADC), comparator inputs, and timer channels; PA0–PA3 also serve as LSE/LSI oscillator pins. |
| PA10–PA13 | Alternate function I/O | Support USART1_TX/RX, SPI1_SCK/MOSI/MISO, and I²C1_SCL/SDA - enabling flexible peripheral mapping without external muxing. |
| BOOT0 | Boot mode select | Controls boot source (system memory vs Flash); pulled low internally via 100 kΩ resistor - requires external pull-up only for bootloader entry. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power BOR | 5 selectable brownout reset thresholds (1.6–2.8 V) - ensures reliable startup and operation across wide battery discharge curves without external supervisor IC. |
| Embedded EEPROM | 512 B with ECC and 100k write/erase cycles - eliminates need for external nonvolatile storage in parameter-tuning applications like calibration or device configuration. |
| Comparator window mode | Dual ultra-low-power comparators with independent hysteresis and wake-up capability - enables autonomous voltage monitoring (e.g., battery SOC) with zero CPU intervention. |
| Pre-programmed bootloader | Factory-loaded USART/SPI bootloader - allows field firmware updates without JTAG/SWD debugger, reducing production and service costs. |
| Temperature sensor | Integrated calibrated sensor (±2 °C accuracy) with VREFINT reference - provides system thermal awareness for derating or compensation without external components. |
Applications
| Smart Utility Metering | Wireless Sensor Node |
|---|---|
Use Scenario: Battery-powered gas/water meter with hourly pressure/flow readings and LoRaWAN transmission. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RTC-triggered wakeups, LPUART-to-LoRa bridge, and EEPROM-based event logging. Use Value: 0.29 µA Stop mode + 5 µs wakeup enables >10-year battery life on CR2450; 23 5V-tolerant I/Os simplify interface to legacy transducers. |
Use Scenario: Indoor air quality monitor using CO₂, VOC, and humidity sensors with BLE reporting. IC Role / Device Role / Timing Role: Central data aggregator executing sensor fusion, I²C sensor polling, and BLE UART passthrough via USART. Use Value: Dual comparators monitor supply voltage for graceful shutdown; 12-bit ADC resolves ppm-level gas concentration changes with <1 LSB INL. |
| Industrial Predictive Maintenance | Medical Wearable Patch |
Use Scenario: Vibration-sensing node on motor housing with FFT analysis and anomaly flagging. IC Role / Device Role / Timing Role: Real-time signal acquisition controller running lightweight DSP on Cortex-M0+, triggering alerts via I²C-connected accelerometer and storing timestamps in backup registers. Use Value: 76 µA/MHz Run mode efficiency allows continuous sampling at 1 kHz without thermal throttling; CRC unit validates firmware integrity during OTA updates. |
Use Scenario: ECG patch with lead-off detection, analog front-end biasing, and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Analog-digital hybrid controller handling electrode bias generation, ADC conversion, comparator-based lead-off detection, and secure data streaming. Use Value: 0.54 µA Stop+RTC+2 KB RAM retention preserves patient session context during sleep mode; 512 B EEPROM stores calibration coefficients per patient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L031F3P6 | Same core and package, but 8 KB Flash, no EEPROM, and no RTC calendar function - lacks data retention and long-term timestamping capability. | Suitable for simpler sensor readout where firmware size <8 KB and no time-stamped logging is needed. | Select when cost sensitivity outweighs EEPROM/RTC requirements and design fits within reduced memory footprint. |
| EFM32ZG108F16 | ARM Cortex-M0+, 16 KB Flash, 8 KB RAM, but no integrated EEPROM and higher typical Stop current (0.6 µA vs 0.29 µA). | Better suited for applications requiring larger RAM buffer (e.g., audio preprocessing) but less critical on EEPROM persistence or lowest standby power. | Choose if higher RAM headroom justifies ~2× higher Stop current and absence of on-chip EEPROM for configuration storage. |
Compared with STM32L011F3U6TR, STM32L031F3P6 trades EEPROM and RTC for lower cost and smaller die, while EFM32ZG108F16 offers more RAM at the expense of higher leakage and no embedded nonvolatile data storage-making the STM32L011F3U6TR optimal for compact, long-life, self-contained sensor endpoints.
Availability
STM32L011F3U6TR is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor nodes, industrial predictive maintenance, and medical wearable patches requiring stable component supply across extended product lifecycles.
Supply support for STM32L011F3U6TR 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 analog devices for industrial, automotive, and consumer markets.
The STM32L0 Access line targets ultra-low-power embedded applications demanding extended battery life, robust memory reliability, and minimal bill-of-materials-optimized for cost-sensitive, space-constrained IoT endpoints.
FAQ
What is the maximum operating frequency and associated power consumption in Run mode?
The STM32L011F3U6TR runs at up to 32 MHz with 76 µA/MHz typical current consumption when executing code from Flash. At full speed (32 MHz), total active current is approximately 2.43 mA under standard conditions (3.0 V, 25 °C), verified in Table 22 of the datasheet (DocID027973 Rev 5).
Does this MCU support hardware encryption or secure boot features?
No. The STM32L011F3U6TR does not integrate hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It relies on software-based security primitives and external secure elements for authentication or encrypted firmware updates.
Can the internal 16 MHz RC oscillator be used as the system clock without calibration?
Yes-the HSI16 oscillator is factory-trimmed to ±1% accuracy and can directly drive the system clock without external crystal or runtime calibration. It supports immediate startup (<4 µs) and is the default clock source after reset.
How many I/O pins support 5V tolerance, and what is the absolute maximum rating?
23 of the 28 I/Os are 5V-tolerant (PA0–PA9, PA10–PA13, PB0–PB1, PB6–PB7, PB9), confirmed in Section 3.7 and Table 50 of the datasheet. Absolute maximum voltage is 5.5 V on these pins, regardless of VDD level, enabling direct interfacing with 5V logic families.
STM32L011F3U6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-UFQFN
- Series:
- STM32L0
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 512 x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 7x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L011F3U6TR FAQ
1.How can I place an order for STM32L011F3U6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L011F3U6TR 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 STM32L011F3U6TR reliable?
The price and inventory of STM32L011F3U6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L011F3U6TR is usually 5 days.
3.What payment methods are accepted for STM32L011F3U6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L011F3U6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L011F3U6TR?
STM32L011F3U6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L011F3U6TR 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 STM32L011F3U6TR?
For technical support, including STM32L011F3U6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L011F3U6TR requirements.
6.How does Aetrix verify that STM32L011F3U6TR is sourced from the original manufacturer or authorized distributors?
All STM32L011F3U6TR 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 STM32L011F3U6TR meets industry standards.
7.What is the process for return or replacement of STM32L011F3U6TR?
All STM32L011F3U6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L011F3U6TR, 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 STM32L011F3U6TR part is unused and in its original packaging.
Return procedure for STM32L011F3U6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L011F3U6TR Tags
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