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STMicroelectronics STM32L011G3U6
- Part No.:
- STM32L011G3U6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 28-UFQFN
- Datasheet:
-
STM32L011G3U6.pdf
- Description:
- IC MCU 32BIT 8KB FLASH 28UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,445
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Product details
Overview
STM32L011G3U6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 16 KB Flash, 2 KB SRAM, 512 B EEPROM, 12-bit ADC (1.14 Msps), and operating voltage range of 1.65–3.6 V. It delivers 0.95 DMIPS/MHz performance at up to 32 MHz and achieves 0.23 µA Standby current-ideal for battery-powered sensor nodes and smart metering endpoints.
For engineers reviewing the STM32L011G3U6 datasheet, STM32L011G3U6 pinout, STM32L011G3U6 application, or STM32L011G3U6 equivalent, key selection criteria include ultra-low-power mode timing (5 µs wakeup from Flash), 23 I/Os with 5V tolerance, integrated RTC + backup registers, and support for SWD debug in UFQFPN20 package.
Technical Context
The STM32L011G3U6 integrates a single-core Arm Cortex-M0+ with tightly coupled NVIC and SysTick, executing from Flash with ECC protection and supporting dynamic voltage scaling across three power ranges. Its clock system combines factory-trimmed 16 MHz HSI, 32 kHz LSE for RTC calibration, and programmable MSI (65 kHz–4.2 MHz) for flexible low-power operation.
Power management includes five selectable BOR thresholds, PVD monitoring, and seven low-power modes-from Run (76 µA/MHz) to Standby (0.23 µA with two wakeup pins). Analog subsystem comprises dual ultra-low-power comparators (down to 1.65 V), temperature sensor, and 12-bit ADC with hardware oversampling and data transfer via 5-channel DMA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32-bit, 0.95 DMIPS/MHz @ 32 MHz max |
| Memory | 16 KB Flash with ECC, 2 KB SRAM, 512 B EEPROM with ECC |
| ADC | 12-bit, 1.14 Msps, up to 10 channels, operational down to 1.65 V supply |
| Low-power Modes | Standby: 0.23 µA (2 wakeup pins); Stop + RTC + 2 KB RAM retention: 0.54 µA |
| Wakeup Time | 5 µs from Flash in Run mode; supports fast sensor polling cycles |
| I/O Capability | 28 fast I/Os total; 23 pins 5V tolerant-enables direct interface with legacy 5V peripherals |
| Clock Sources | HSI16 (±1%), LSE (32 kHz RTC), MSI (65 kHz–4.2 MHz), PLL for CPU clock scaling |
Pinout & Package
STM32L011G3U6 is housed in a 20-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN20) package, 3 × 3 mm, 0.5 mm pitch, with exposed thermal pad. This compact footprint supports high-density PCB layouts in space-constrained IoT endpoints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 1.65–3.6 V supply for core and I/Os; decoupling required per datasheet layout guidelines |
| VSS | Ground reference | Digital ground return path; must be connected to thermal pad for optimal thermal performance |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 5V-tolerant logic for external reset coordination |
| PA0–PA7 | General-purpose I/Os | Configurable as GPIO, ADC inputs, timer channels, or UART/SPI/I²C alternate functions |
| PA11/PA12 | USB D+/D− (not available on G3U6) | Not bonded-pinout excludes USB functionality; confirms device variant is non-USB |
| SWDIO/SWCLK | Serial Wire Debug interface | Two-pin debug port enabling full SWD programming and real-time trace without JTAG overhead |
| BOOT0 | Boot mode selection | Pulled low by default; enables system memory bootloader via USART when asserted high |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby | 0.23 µA with two wakeup pins-extends coin-cell battery life beyond 10 years in periodic wake-sense-sleep cycles |
| Hardware ECC on Flash & EEPROM | Prevents silent data corruption in field-deployed firmware and critical configuration storage |
| 5V-tolerant I/Os | 23 pins tolerate 5V logic levels-eliminates level-shifter components when interfacing with industrial sensors or legacy controllers |
| Integrated RTC with calibration | 32 kHz LSE oscillator supports ±1 ppm accuracy after calibration; retains time across Stop/Standby modes |
| Dual ultra-low-power comparators | Operate down to 1.65 V supply with window mode detection-enables autonomous analog threshold monitoring without CPU wake |
Applications
| Smart Utility Metering | Wireless Sensor Node |
|---|---|
Use Scenario: Battery-powered gas/water meter with hourly pressure/temperature sampling and LoRaWAN transmission. IC Role / Device Role / Timing Role: Main controller managing ADC acquisition, RTC-triggered sleep/wake, CRC-secured data packaging, and low-power UART-to-LoRa interface. Use Value: 0.23 µA Standby current enables >15-year battery life; 5 µs wakeup ensures sub-millisecond response to tamper interrupts. | Use Scenario: Indoor air quality monitor using CO₂, VOC, and humidity sensors with BLE beacon reporting. IC Role / Device Role / Timing Role: Central data aggregator running sensor fusion algorithms, managing I²C sensor reads, and scheduling BLE advertising intervals via LPTIM. Use Value: Dual comparators detect rapid environmental transients (e.g., smoke onset) and wake CPU autonomously-reducing average power by 40% vs polling. |
| Industrial Predictive Maintenance | Medical Wearable Patch |
Use Scenario: Vibration sensor node on motor housing capturing FFT-based bearing health metrics every 5 minutes. IC Role / Device Role / Timing Role: Real-time signal processor using DMA-accelerated ADC sampling, hardware oversampling, and 16-bit timer for precise interval control. Use Value: 12-bit ADC with 1.14 Msps supports 20 kHz vibration bandwidth; 2 KB SRAM buffers 4K samples before SPI transmission. | Use Scenario: ECG patch recording heart rate variability over 72-hour clinical trials using dry electrodes. IC Role / Device Role / Timing Role: Low-noise analog front-end controller with ADC oversampling, temperature-compensated comparator for R-peak detection, and secure EEPROM storage of patient identifiers. Use Value: 512 B EEPROM with ECC stores calibrated sensor offsets and patient IDs reliably across 100k write cycles; 0.54 µA Stop+RTC mode preserves session state. |
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 |
|---|---|---|---|
| STM32L011F3U6 | Same core/peripherals but TSSOP20 package (6.5 × 4.4 mm); no 5V-tolerant I/Os | Suitable for through-hole prototyping or cost-sensitive consumer PCBs where density is less critical | Select when manual soldering or larger board area is acceptable and 5V interface compatibility is not required |
| STM32L031F4P6 | Higher Flash (16 KB → 32 KB), adds AES-128 crypto engine and more timers; same UFQFPN20 package | Required for firmware signing, secure OTA updates, or multi-sensor synchronization tasks | Choose when cryptographic operations or expanded peripheral concurrency (e.g., simultaneous ADC + SPI + I²C) are mandatory |
Compared with STM32L011F3U6, the G3U6 offers superior I/O flexibility for mixed-voltage systems; versus STM32L031F4P6, it trades security features for lower unit cost and identical ultra-low-power profile-making it optimal for cost-sensitive, battery-limited edge nodes without encryption needs.
Availability
STM32L011G3U6 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 and long-term lifecycle assurance.
Supply support for STM32L011G3U6 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, specializing in microcontrollers, power management, and sensing technologies for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications-designed specifically for energy-harvesting systems, battery-operated IoT endpoints, and portable medical devices demanding sub-µA sleep currents and robust analog integration.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32L011G3U6 operates up to 32 MHz with dynamic voltage scaling. At 32 MHz and 3.3 V supply, typical Run-mode current is 132 µA/MHz (≈4.2 mA total), dropping to 76 µA/MHz (≈2.4 mA) under optimized conditions with code execution from Flash and minimal peripheral activation.
Does STM32L011G3U6 support hardware encryption or secure boot?
No. The STM32L011G3U6 lacks dedicated cryptographic accelerators (AES, PKA) and secure boot ROM. It relies on software-based security primitives. For hardware-enforced security, ST recommends the STM32L031 or STM32L071 series, which integrate AES-128 and true random number generators.
Can the internal 16 MHz RC oscillator be used as the system clock without external components?
Yes. The HSI16 oscillator is factory-trimmed to ±1% accuracy and can serve as the main system clock source without external crystals or capacitors. It supports all low-power modes except Stop with RTC, where LSE or LSI is required for timekeeping.
How many I/O pins support 5V tolerance, and what is the absolute maximum rating?
23 I/O pins (PA0–PA7, PA10–PA15, PB0–PB7) are 5V tolerant. Absolute maximum input voltage is 5.5 V, verified per datasheet Table 50 (I/O static characteristics) and Table 15 (voltage ratings). This allows direct connection to 5V logic without external level shifters.
STM32L011G3U6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 28-UFQFN
- Series:
- STM32L0
- Packaging:
- Tray
- 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:
- 24
- 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 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L011G3U6 FAQ
1.How can I place an order for STM32L011G3U6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L011G3U6 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 STM32L011G3U6 reliable?
The price and inventory of STM32L011G3U6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L011G3U6 is usually 5 days.
3.What payment methods are accepted for STM32L011G3U6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L011G3U6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L011G3U6?
STM32L011G3U6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L011G3U6 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 STM32L011G3U6?
For technical support, including STM32L011G3U6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L011G3U6 requirements.
6.How does Aetrix verify that STM32L011G3U6 is sourced from the original manufacturer or authorized distributors?
All STM32L011G3U6 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 STM32L011G3U6 meets industry standards.
7.What is the process for return or replacement of STM32L011G3U6?
All STM32L011G3U6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L011G3U6, 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 STM32L011G3U6 part is unused and in its original packaging.
Return procedure for STM32L011G3U6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L011G3U6 Tags
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