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STMicroelectronics STM32L476VGT7
- Part No.:
- STM32L476VGT7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L476VGT7.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:175
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Product details
Overview
STM32L476VGT7 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, USB OTG FS, LCD controller, and integrated SMPS support. It targets battery-powered IoT edge nodes, portable medical monitors, and smart utility meters requiring extended runtime and rich analog/mixed-signal integration.
For engineers reviewing the STM32L476VGT7 datasheet, STM32L476VGT7 pinout, STM32L476VGT7 application, or STM32L476VGT7 equivalent, key selection criteria include its 39 µA/MHz SMPS-enabled run mode, dual 12-bit DACs with sample-and-hold, 3× 12-bit ADCs (5 Msps), 24-channel capacitive touch sensing, and -40 °C to 105 °C industrial temperature grade in LQFP100 package.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a memory protection unit (MPU) and interconnect matrix for deterministic peripheral arbitration. Its power architecture supports dual supply schemes: internal LDO or external SMPS (VDD12 = 1.05–1.15 V), delivering 39 µA/MHz efficiency in SMPS mode.
Clock system includes three PLLs (system/USB/audio), four oscillator sources (HSE/LSE/HSI/LSI), and auto-trimmed MSI (±0.25 %), enabling precise timing for USB FS, RTC calendar, and audio SAI interfaces. Low-power modes are hardware-optimized: 420 nA Standby with RTC, 1.4 µA Stop 2 with RTC, and 4 µs wakeup latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP and control algorithms without external co-processor |
| Memory | 1 MB dual-bank flash (read-while-write), 128 KB SRAM (32 KB with parity) - supports secure firmware updates and robust data logging |
| Power Efficiency | 39 µA/MHz @ 3.3 V (SMPS mode) - extends battery life in always-on sensor hubs by >2× vs LDO-only operation |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps), 2× 12-bit DACs, 2× op-amps with PGA, 2× comparators - enables closed-loop analog signal conditioning on-chip |
| Low-Power Modes | 420 nA Standby w/RTC, 1.4 µA Stop 2 w/RTC, 4 µs wakeup - meets <10 µA average current budgets for multi-year coin-cell applications |
| Package & Temp | LQFP100 (14 × 14 mm), -40 °C to +105 °C - suitable for industrial-grade PCB assembly and thermal cycling reliability |
| Interface Count | 5× USART, 3× I²C, 3× SPI, USB OTG FS, CAN 2.0B, SDMMC, 2× SAI - supports concurrent wired/wireless connectivity and sensor fusion |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant ECOPACK2 packaging. Pinout validated per STMicroelectronics DS10198 Rev 11, Section 4 ("Pinouts and pin description") and Table 16 ("STM32L476xx pin definitions").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Supports 1.71–3.6 V operation; decoupling required per datasheet layout guidelines for noise immunity |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 81 fast I/Os (5 V-tolerant); 14 pins support independent 1.08–3.6 V supply for mixed-voltage interfacing |
| PC13–PC15 | RTC oscillator inputs | Connect 32.768 kHz crystal; enable hardware calendar and alarm wake-up from all low-power modes |
| PA11/PA12 | USB OTG FS D+/D- | Full-speed USB interface with built-in transceiver; no external PHY required for HID/CDC class devices |
| PB8/PB9 | I²C1_SCL/I²C1_SDA | Fast-mode Plus (1 Mbit/s) I²C with SMBus/PMBus support - drives multiple sensors or EEPROMs with clock stretching |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 30 nA Shutdown mode with 5 dedicated wakeup pins - ideal for tamper-detection or motion-triggered wake-up |
| Batch Acquisition Mode (BAM) | Permits CPU sleep while peripherals autonomously acquire and pre-process sensor data - reduces active time by >70 % in periodic monitoring |
| Integrated SMPS controller | Drives external DC-DC converter to supply VDD12; achieves 39 µA/MHz vs 100 µA/MHz in LDO mode - cuts system power by ~60 % |
| Capacitive Touch Sensing (TSC) | 24-channel hardware-accelerated touch controller supporting touchkey, linear, and rotary sensors - eliminates need for external touch IC |
| True Random Number Generator (RNG) | NIST SP800-90B compliant entropy source - satisfies cryptographic key generation requirements for TLS/DTLS in constrained devices |
Applications
| Wearable Health Monitor | Smart Gas Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition with Bluetooth LE telemetry and 10-year battery life. IC Role / Device Role / Timing Role: Central MCU managing analog front-end (ADC/DAC/op-amps), BLE stack timing via LPUART, and RTC-based data logging intervals. Use Value: 420 nA Standby with RTC and 4 µs wakeup ensures sub-millisecond response to heart-rate anomalies while maintaining multi-year runtime. | Use Scenario: Ultrasonic flow measurement with pressure/temperature compensation, LoRaWAN reporting, and tamper detection. IC Role / Device Role / Timing Role: Sensor fusion hub coordinating ultrasonic transducers (via timers), analog sensors (ADC), and secure LoRa transmission (AES-RNG). Use Value: Integrated 24-channel TSC detects enclosure intrusion; 30 nA Shutdown mode enables decade-long shelf life before field deployment. |
| Industrial HMI Panel | Portable Diagnostic Device |
Use Scenario: 4×44-segment LCD display with capacitive buttons, CAN bus diagnostics, and local data storage. IC Role / Device Role / Timing Role: Display controller (LCD driver + step-up converter), CAN node (2.0B Active), and SDMMC host for firmware updates. Use Value: On-chip LCD controller drives 176 segments without external bias generator; 5× USARTs support simultaneous debug, CAN, and RS-485 interfaces. | Use Scenario: Handheld ultrasound probe with analog beamforming, battery management, and USB-C host interface. IC Role / Device Role / Timing Role: Real-time signal processor (Cortex-M4+FPU), high-speed ADC data capture, and USB OTG FS host for probe configuration. Use Value: ART Accelerator enables zero-wait-state execution of beamforming kernels from flash; dual 12-bit DACs generate precision analog test signals. |
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 |
|---|---|---|---|
| STM32L432KCU6 | 64 KB flash, 16 KB SRAM, no LCD, no SMPS, QFN32 package | Targeted at cost-sensitive, space-constrained sensor nodes without display or high-memory firmware | Select when display, large code footprint, or external SMPS integration are unnecessary |
| STM32U575ZIT6 | ARMv8-M TrustZone, 2 MB flash, 786 KB SRAM, 1.5x higher DMIPS, 1.1 V core supply | Designed for PSA Level 3 security certification, secure boot, and advanced crypto acceleration | Select when hardware root-of-trust, secure firmware updates, or >1 MB flash are mandatory |
Compared with STM32L432KCU6, the STM32L476VGT7 provides 16× more flash and integrated LCD/SMPS for feature-rich HMI; versus STM32U575ZIT6, it offers lower cost and proven qualification for industrial temperature range without security overhead.
Availability
STM32L476VGT7 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial HMIs, and portable diagnostic devices requiring stable component supply across long product lifecycles.
Supply support for STM32L476VGT7 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 components for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, rich analog integration, and long-term supply assurance - optimized for battery-operated edge intelligence.
FAQ
What is the maximum operating frequency and corresponding performance metric?
The STM32L476VGT7 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) and 273.55 CoreMark® (3.42 CoreMark/MHz), verified under full-speed conditions with cache enabled and prefetch disabled per STMicroelectronics DS10198 Rev 11.
Does this MCU support external SMPS control, and what efficiency gain does it provide?
Yes, the STM32L476VGT7 integrates an SMPS controller that drives an external DC-DC converter to supply VDD12. In SMPS mode, it achieves 39 µA/MHz at 3.3 V, compared to 100 µA/MHz in LDO mode - a 61 % reduction in active current, directly extending battery life in continuous-sensing applications.
What LCD configurations are supported, and what is the drive capability?
The integrated LCD controller supports 8×40 or 4×44 segment configurations with on-chip step-up converter, eliminating external voltage boosters. It drives up to 176 segments (8 commons × 40 segments or 4 commons × 44 segments) at 3.3 V supply, with software-configurable bias and frame frequency - validated per Section 3.21 of DS10198 Rev 11.
How many independent power domains does the MCU support for I/O voltage flexibility?
The STM32L476VGT7 supports two independent I/O supply domains: VDD (1.71–3.6 V) for main logic and VDDIO2 (1.08–3.6 V) for up to 14 pins. This allows direct interfacing with 1.2 V, 1.8 V, or 3.3 V peripherals without level shifters - confirmed in electrical characteristics Table 23 and pin definition Table 16 of DS10198 Rev 11.
STM32L476VGT7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L4
- Packaging:
- Tray
- 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, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L476VGT7 FAQ
1.How can I place an order for STM32L476VGT7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476VGT7 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 STM32L476VGT7 reliable?
The price and inventory of STM32L476VGT7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476VGT7 is usually 5 days.
3.What payment methods are accepted for STM32L476VGT7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476VGT7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476VGT7?
STM32L476VGT7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476VGT7 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 STM32L476VGT7?
For technical support, including STM32L476VGT7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476VGT7 requirements.
6.How does Aetrix verify that STM32L476VGT7 is sourced from the original manufacturer or authorized distributors?
All STM32L476VGT7 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 STM32L476VGT7 meets industry standards.
7.What is the process for return or replacement of STM32L476VGT7?
All STM32L476VGT7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476VGT7, 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 STM32L476VGT7 part is unused and in its original packaging.
Return procedure for STM32L476VGT7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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