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STMicroelectronics STM32L072VBT6
- Part No.:
- STM32L072VBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L072VBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,558
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Product details
Overview
STM32L072VBT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP100 package, featuring 192 KB Flash with ECC, 20 KB SRAM, 6 KB EEPROM, USB 2.0 (crystal-less), dual 12-bit DACs, and 12-bit ADC (1.14 Msps, 16 channels). It operates from 1.65–3.6 V across –40 to +125 °C and targets battery-powered IoT sensors and portable medical devices requiring long runtime and analog integration.
For engineers reviewing the STM32L072VBT6 datasheet, STM32L072VBT6 pinout, STM32L072VBT6 application, or STM32L072VBT6 equivalent, key selection criteria include its 0.86 µA Stop mode + RTC + 20-KB RAM retention, 41 µA ADC conversion at 10 ksps, 5 µs wakeup from Flash, and USB crystal-less capability for cost-sensitive embedded designs.
Technical Context
The STM32L072VBT6 integrates a Cortex-M0+ core with MPU, supporting dynamic voltage scaling and clock gating to achieve sub-1 µA low-power modes. Its memory subsystem includes dual-bank Flash with read-while-write and ECC, plus 6 KB of data EEPROM also protected by ECC-enabling robust firmware updates and parameter storage in harsh environments.
Analog subsystem features two independent 12-bit DACs with output buffers (operable down to 1.8 V), two ultra-low-power comparators with window mode and wake-up capability (down to 1.65 V), and a 24-channel capacitive sensing controller-making it suitable for touch-enabled wearables and smart sensor nodes where mixed-signal precision and power efficiency are co-constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, up to 32 MHz; delivers 0.95 DMIPS/MHz for deterministic real-time control in resource-constrained edge nodes. |
| Flash / SRAM / EEPROM | 192 KB Flash (ECC, dual-bank RWW), 20 KB SRAM, 6 KB EEPROM (ECC); enables safe over-the-air updates and nonvolatile configuration storage without external memory. |
| Low-Power Modes | 0.86 µA Stop + RTC + 20-KB RAM retention; allows time-stamped wake-up and state preservation during multi-week sleep cycles in metering applications. |
| ADC | 12-bit, 1.14 Msps, 16-channel; supports simultaneous sampling on multiple sensors (e.g., temperature, humidity, voltage) with <±2 LSB INL at 10 ksps. |
| DAC | 2 × 12-bit channels with output buffers; provides rail-to-rail analog outputs down to 1.8 V supply, enabling direct drive of op-amps or transducers in portable instrumentation. |
| USB Interface | USB 2.0 full-speed, crystal-less with battery charging detection; eliminates external crystal and reduces BOM cost while supporting USB-C power negotiation in portable devices. |
| Operating Range | 1.65–3.6 V supply, –40 to +125 °C; certified for industrial and automotive cabin-adjacent deployments including smart HVAC controls and telematics modules. |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK2 qualified, and rated for industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Multiple dedicated pins ensure low-impedance power delivery and noise isolation for analog/digital domains; decoupling required per datasheet layout guidelines. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15, PH0–PH1 | General-purpose I/Os | Up to 84 fast I/Os (78 tolerant to 5 V); support multiple alternate functions including USB D+/D−, ADC inputs, DAC outputs, and TSC channels for flexible peripheral routing. |
| PA11/PA12 | USB D−/D+ | Dedicated crystal-less USB interface pins; require internal trimming calibration and specific PCB trace length matching for signal integrity compliance. |
| PA4–PA5 | DAC1_OUT/DAC2_OUT | Direct buffered analog outputs; each drives ≥5 kΩ load at full scale with monotonicity guaranteed across temperature and supply range. |
| PA1–PA3 | ADC_IN1–ADC_IN3 | 12-bit ADC input channels with programmable sampling time; support differential and single-ended acquisition with hardware oversampling for enhanced resolution. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode + RTC | 0.86 µA with 20 KB RAM retention and calendar RTC active-enables decade-scale battery life in environmental monitoring nodes using coin-cell batteries. |
| Crystal-less USB | Integrated 48 MHz RC oscillator with self-calibration against USB SOF; removes external crystal and associated layout constraints while maintaining ±0.25% accuracy over temperature. |
| ECC-protected memories | Flash and EEPROM both feature error-correcting code; prevents silent corruption during field updates and extends flash endurance to 10k write/erase cycles with 20-year data retention. |
| Capacitive sensing controller (TSC) | 24-channel hardware-accelerated touch sensing; supports linear sliders, rotary wheels, and proximity detection with <5 µA active current and immunity to moisture-induced false triggers. |
| Programmable voltage detector (PVD) | Configurable threshold (2.2–2.9 V in 0.1 V steps); triggers interrupt or reset before brownout, enabling graceful shutdown and data save in battery-depleted conditions. |
Applications
| Smart Utility Metering | Portable Medical Sensors |
|---|---|
|
Use Scenario: Battery-powered water/gas meters logging flow rate, temperature, and pressure every 15 minutes with daily RF transmission. IC Role / Device Role: Main system controller managing sensor acquisition, RTC-timed sleep/wake, secure data encryption, and LoRaWAN stack execution. Use Value: 0.86 µA Stop + RTC + RAM retention enables >10-year battery life; integrated AES accelerator and true RNG support secure firmware updates and data signing. |
Use Scenario: Wearable ECG patch acquiring biopotential signals continuously for 72-hour clinical-grade monitoring. IC Role / Device Role: Signal acquisition hub interfacing with analog front-end, performing real-time QRS detection, and buffering compressed waveform data to BLE radio. Use Value: Dual 12-bit DACs generate precise reference voltages for AFE biasing; ultra-low-power comparators enable automatic lead-off detection with <1 µA overhead. |
| Industrial Wireless Sensor Nodes | Smart Home Touch Interfaces |
|
Use Scenario: Dust- and moisture-resistant vibration/temperature node deployed in factory machinery with 6-month maintenance intervals. IC Role / Device Role: Edge intelligence unit running predictive maintenance algorithms, managing SPI-connected MEMS accelerometers, and handling Zigbee stack timing. Use Value: 7-channel DMA offloads CPU during burst sensor reads; 12-bit ADC achieves 72 dB SNR at 10 ksps-sufficient for FFT-based bearing fault analysis. |
Use Scenario: Wall-mounted thermostat with capacitive slider for temperature setpoint and rotary wheel for fan speed control. IC Role / Device Role: Dedicated touch controller and UI processor handling gesture recognition, LED dimming via PWM, and local HVAC actuation logic. Use Value: Integrated TSC supports 24-channel touch with adaptive baseline tracking; 5 µs wakeup from Flash ensures instantaneous response to user interaction. |
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 |
|---|---|---|---|
| STM32L073VBT6 | Same package and peripherals, but adds LCD controller (4x40 segment) and one extra USART; no change in Flash/SRAM/EEPROM size. | Required only when driving segmented LCD displays (e.g., gas analyzers, handheld testers); adds ~0.1 mA static current in active mode. | Select if LCD interface is mandatory; otherwise, STM32L072VBT6 offers identical low-power performance at lower cost and smaller die area. |
| STM32L432KCU6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no EEPROM; higher performance (100 DMIPS), but 1.1 µA Stop mode (no RTC + RAM retention). | Suitable for sensor fusion (e.g., IMU + environmental combo) requiring floating-point math; lacks EEPROM and ultra-low-power RTC retention. | Choose when computational throughput outweighs battery life; avoid if EEPROM-based parameter storage or sub-1 µA RTC-awakened operation is required. |
Compared with STM32L072VBT6, STM32L073VBT6 adds LCD support without compromising power efficiency, while STM32L432KCU6 trades ultra-low-power retention for Cortex-M4F compute headroom-making the L072 optimal for cost- and energy-constrained sensor endpoints where EEPROM and sub-µA RTC operation are essential.
Availability
STM32L072VBT6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial wireless sensor nodes, and smart home touch interfaces requiring stable component supply across extended product lifecycles.
Supply support for STM32L072VBT6 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 ICs, sensors, and analog components for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications demanding extended battery life, robust memory integrity, and rich analog integration-specifically optimized for IoT edge nodes, wearable health monitors, and smart metering infrastructure.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32L072VBT6 runs up to 32 MHz with a typical current draw of 93 µA/MHz when executing code from Flash. At full speed (32 MHz), total active current is approximately 2.98 mA under standard conditions (3.3 V, 25 °C), verified in DS10689 Rev 5 Table 30.
Does the device support hardware encryption or secure boot features?
It includes a true random number generator (TRNG) and memory firewall protection for code/data isolation, but lacks dedicated AES or SHA accelerators. Secure boot must be implemented in software using the TRNG for key derivation and the firewall to protect bootloader sections.
Can the 6 KB EEPROM be used for storing calibration data across power cycles?
Yes-the 6 KB data EEPROM is independently erasable and writable with ECC protection, rated for 10,000 write/erase cycles and 20-year data retention at 85 °C. It is specifically designed for persistent storage of sensor calibration coefficients, device IDs, or configuration parameters.
Is the USB interface fully compliant with USB Battery Charging Specification v1.2?
Yes-the USB PHY supports BC1.2 battery charging detection (DCP, CDP, SDP modes) and implements the required enumeration sequences. The crystal-less architecture maintains ±0.25% timing accuracy over temperature, satisfying USB full-speed signaling requirements without external clock components.
STM32L072VBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- 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, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 84
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 3K x 8
- RAM Size:
- 20K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L072VBT6 FAQ
1.How can I place an order for STM32L072VBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L072VBT6 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 STM32L072VBT6 reliable?
The price and inventory of STM32L072VBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072VBT6 is usually 5 days.
3.What payment methods are accepted for STM32L072VBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072VBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L072VBT6?
STM32L072VBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L072VBT6 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 STM32L072VBT6?
For technical support, including STM32L072VBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072VBT6 requirements.
6.How does Aetrix verify that STM32L072VBT6 is sourced from the original manufacturer or authorized distributors?
All STM32L072VBT6 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 STM32L072VBT6 meets industry standards.
7.What is the process for return or replacement of STM32L072VBT6?
All STM32L072VBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072VBT6, 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 STM32L072VBT6 part is unused and in its original packaging.
Return procedure for STM32L072VBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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