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STMicroelectronics STM32L471VGT6TR
- Part No.:
- STM32L471VGT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L471VGT6TR.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,233
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Product details
Overview
STM32L471VGT6TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 1 MB Flash, 128 KB SRAM, and integrated analog peripherals including dual 12-bit DACs, triple 12-bit ADCs, two op-amps, and two ultra-low-power comparators. It supports capacitive touch sensing (24 channels), audio via dual SAI interfaces, and CAN 2.0B - deployed in battery-powered industrial sensors and portable medical monitors.
For engineers reviewing the STM32L471VGT6TR datasheet, STM32L471VGT6TR pinout, STM32L471VGT6TR application, or STM32L471VGT6TR equivalent, key selection criteria include verified Stop 2 mode current (1.1 µA), RTC-with-calendar support, LQFP100 package compatibility, and hardware parity on 32 KB SRAM for functional safety-critical firmware.
Technical Context
The device implements FlexPowerControl architecture with five low-power modes: Shutdown (30 nA), Standby (120 nA), Stop 2 (1.1 µA), and Run mode at 100 µA/MHz. Its ART Accelerator™ enables zero-wait-state execution from Flash, while the interconnect matrix decouples bus arbitration for deterministic peripheral access.
Clock system includes three PLLs (system/audio/ADC), four oscillator sources (HSE/LSE/HSI16/MSI), and auto-trimmed MSI achieving ±0.25% accuracy. Analog subsystem features independent supply domains, hardware oversampling (up to 16-bit), and sigma-delta digital filters (DFSDM) for precision sensor signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP algorithms and floating-point control loops without external coprocessor. |
| Memory | 1 MB dual-bank Flash (read-while-write), 128 KB SRAM (32 KB with hardware parity) - supports secure firmware updates and ASIL-B-compliant data integrity. |
| Low-power performance | 1.1 µA in Stop 2 mode, 4 µs wakeup - extends battery life in intermittent-sensing applications like wireless node endpoints. |
| Analog peripherals | 3× 12-bit ADC (5 Msps), 2× 12-bit DAC, 2× op-amps with PGA, 2× comparators - enables closed-loop analog control and sensor signal chain integration. |
| Connectivity | 2× SAI, 5× USART, 1× LPUART, 3× I²C, 3× SPI, 1× QuadSPI, CAN 2.0B, SDMMC - supports audio streaming, legacy serial protocols, and memory expansion in compact designs. |
| Package | LQFP100 (14 × 14 mm), ECOPACK2® compliant - provides 80 user I/Os with 5 V tolerance and independent I/O supply down to 1.08 V for mixed-voltage interfacing. |
| Security & debug | 96-bit unique ID, CRC unit, True RNG, SWD/JTAG + ETM - meets requirements for device authentication, firmware integrity, and trace-based development debugging. |
Pinout & Package
LQFP100 package (14 × 14 mm, 0.5 mm pitch), 100-pin quad flat pack with exposed thermal pad; RoHS-compliant and ECOPACK2® certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | 1.71–3.6 V operation; separate VDDA/VSSA pins isolate analog domain for noise-sensitive ADC/DAC use. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 80 fast I/Os; most 5 V-tolerant; 14 support independent VDDIO2 supply (1.08–3.6 V) for interfacing with lower-voltage peripherals. |
| PC13–PC15 | RTC-related pins | PC13 = RTC_OUT, PC14/PC15 = LSE crystal connections - enable hardware calendar, alarms, and tamper detection with battery backup. |
| PA2/PA3 | USART2 TX/RX | Default async communication interface; supports LIN, IrDA, modem modes - used for host diagnostics and firmware updates. |
| PD0/PD1 | OSC_IN/OSC_OUT | 4–48 MHz HSE crystal connection - provides high-accuracy system clock source for time-critical applications like motor control. |
| PF0/PF1 | BOOT0/BOOT1 | Boot configuration pins - determine startup vector (system memory, Flash, or SRAM); critical for bootloader implementation and field recovery. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Eight power modes with validated current specs (e.g., 30 nA Shutdown, 1.1 µA Stop 2) - enables precise energy budgeting for ISO 13849 PL-e or IEC 62304 Class C systems. |
| ART Accelerator™ | Zero-wait-state Flash execution at 80 MHz - eliminates CPU stalls during code fetch, improving real-time response in interrupt-driven control tasks. |
| Dual SAI interfaces | Supports I²S, PCM, and SPDIF protocols with DMA offload - enables stereo audio playback/recording without CPU intervention in portable health devices. |
| TSC (Touch Sensing Controller) | 24-channel capacitive sensing with hardware-accelerated acquisition - allows robust touchkey, slider, and rotary encoder implementation with <1 µA active current. |
| DFSDM (Digital Filter for Sigma-Delta) | Four independent filters with configurable decimation and sinc3 filtering - processes high-resolution sensor data (e.g., MEMS microphones, pressure transducers) directly in digital domain. |
Applications
| Industrial Sensor Node | Portable ECG Monitor |
|---|---|
Use Scenario: Wireless temperature/humidity/pressure node with LoRaWAN backhaul and 10-year battery life. IC Role / Device Role / Timing Role: Main controller executing sensor fusion, low-power scheduling, and secure OTA updates; RTC maintains timestamped logs across deep sleep cycles. Use Value: 1.1 µA Stop 2 current and 4 µs wakeup minimize idle power; dual ADCs simultaneously sample analog sensors while DFSDM filters sigma-delta outputs from MEMS devices. | Use Scenario: Battery-powered handheld ECG device with real-time waveform display and arrhythmia detection. IC Role / Device Role / Timing Role: Signal processor acquiring 3-lead analog ECG, performing digital filtering, and driving OLED via SPI; SAI interfaces external audio codec for patient feedback tones. Use Value: Hardware oversampling (16-bit effective) and op-amp PGA enable high-SNR front-end amplification; 128 KB SRAM stores multi-second waveform buffers without external memory. |
| Smart Building Thermostat | Asset Tracking Beacon |
Use Scenario: Zigbee-connected thermostat with capacitive touch UI, ambient light sensing, and HVAC control logic. IC Role / Device Role / Timing Role: Human interface manager (TSC), environmental sensor hub (ADC/DAC), and actuator driver (PWM timers); RTC triggers scheduled setpoint adjustments. Use Value: 24-channel TSC supports multi-button/slider UI with <100 ms response; independent VDDIO2 allows direct connection to 1.8 V display drivers and 3.3 V HVAC relays. | Use Scenario: GPS-enabled logistics tag reporting location every 6 hours using NB-IoT, powered by coin cell. IC Role / Device Role / Timing Role: System orchestrator managing GPS cold start, cellular handshake, and sensor wake-up sequencing; LPUART wakes CPU from Stop 2 on network event. Use Value: 30 nA Shutdown mode preserves battery during transit; CAN interface enables optional vehicle docking diagnostics; unique 96-bit ID ensures tamper-proof asset identification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power Cortex-M4 MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L432KCU6 | 64-pin UFBGA, 256 KB Flash, no SAI or CAN, single ADC, smaller SRAM (64 KB) | Suitable for cost-constrained, space-limited edge nodes without audio or automotive bus needs | Select when footprint and BOM cost outweigh need for dual SAI, CAN, or >500 KB Flash. |
| STM32L552RET6 | ARM TrustZone®, 512 KB Flash, 256 KB SRAM, enhanced crypto accelerators, 1.27 µA Stop 2 | Required for PSA Certified Level 2 or FIPS 140-2 compliance in secure IoT gateways | Choose when hardware-enforced isolation and cryptographic acceleration are mandatory for data-in-transit security. |
Compared with STM32L432KCU6, the STM32L471VGT6TR delivers 4× more Flash, dual SAI, and CAN - justifying its use in feature-rich portable instrumentation; versus STM32L552RET6, it trades TrustZone for lower cost and proven toolchain maturity in non-certified medical/industrial deployments.
Availability
STM32L471VGT6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart thermostats, and asset tracking beacons requiring stable component supply across multi-year production cycles.
Supply support for STM32L471VGT6TR 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding rich analog integration, long battery life, and real-time performance - optimized for portable healthcare, predictive maintenance, and intelligent building systems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating?
The STM32L471VGT6TR operates at up to 80 MHz with an Adaptive Real-Time Accelerator (ART) enabling zero-wait-state Flash execution. Its performance is rated at 100 DMIPS (Dhrystone 2.1), verified at 80 MHz with ART enabled. The CoreMark® score is 273.55 (3.42 per MHz), confirming deterministic real-time throughput for control and signal processing workloads.
Does this MCU support hardware cryptographic acceleration?
No, the STM32L471VGT6TR does not include dedicated cryptographic accelerators (e.g., AES, PKA, HASH). It relies on software libraries for encryption, though it integrates a true random number generator (RNG) and CRC calculation unit for basic integrity and entropy generation. For hardware crypto, consider the STM32L5 or STM32U5 series.
What are the validated low-power mode currents and wakeup times?
Validated currents include 30 nA in Shutdown mode, 120 nA in Standby, 420 nA in Standby with RTC, 1.1 µA in Stop 2 mode, and 100 µA/MHz in Run mode. Wakeup from Stop 2 is guaranteed at ≤4 µs, confirmed across temperature and voltage ranges per DS10741 Rev 3 Section 6.3.6.
Is the LQFP100 package pin-compatible with other STM32L471xx variants?
Yes - all STM32L471xx devices in LQFP100 (e.g., STM32L471RE, STM32L471VE) share identical pinouts and electrical characteristics per Table 16 of DS10741. This enables scalable design reuse: same PCB layout supports different Flash/SRAM configurations (e.g., 512 KB vs. 1 MB) without redesign.
STM32L471VGT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, PWM, WDT
- Number of I/O:
- 82
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 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:
STM32L471VGT6TR FAQ
1.How can I place an order for STM32L471VGT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L471VGT6TR 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 STM32L471VGT6TR reliable?
The price and inventory of STM32L471VGT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L471VGT6TR is usually 5 days.
3.What payment methods are accepted for STM32L471VGT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L471VGT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L471VGT6TR?
STM32L471VGT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L471VGT6TR 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 STM32L471VGT6TR?
For technical support, including STM32L471VGT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L471VGT6TR requirements.
6.How does Aetrix verify that STM32L471VGT6TR is sourced from the original manufacturer or authorized distributors?
All STM32L471VGT6TR 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 STM32L471VGT6TR meets industry standards.
7.What is the process for return or replacement of STM32L471VGT6TR?
All STM32L471VGT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L471VGT6TR, 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 STM32L471VGT6TR part is unused and in its original packaging.
Return procedure for STM32L471VGT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L471VGT6TR Tags
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