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STMicroelectronics STM32L476RGT6
- Part No.:
- STM32L476RGT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L476RGT6.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:5,288
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Product details
Overview
STM32L476RGT6 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, integrated LCD controller, and external SMPS support. It targets battery-powered IoT edge nodes, portable medical devices, and smart meters requiring long runtime and rich peripheral integration.
For engineers reviewing the STM32L476RGT6 datasheet, STM32L476RGT6 pinout, STM32L476RGT6 application, or STM32L476RGT6 equivalent, key selection criteria include ultra-low-power modes (30 nA shutdown, 420 nA standby with RTC), dual-voltage I/O (1.08 V–3.6 V), hardware-accelerated crypto-ready peripherals, and LQFP64 package compatibility for space-constrained designs.
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 dual-bank flash supporting read-while-write. Its FlexPowerControl architecture delivers granular power gating across domains including CPU, peripherals, and voltage regulators.
It features three independent PLLs - one for system clock, one for USB/SDMMC, and one for audio - plus multiple clock sources including 4–48 MHz HSE, 32 kHz LSE, and auto-trimmed internal oscillators (±0.25% accuracy). The interconnect matrix enables concurrent bus access for high-throughput DMA transfers between peripherals and memories.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions; enables real-time signal processing and floating-point math in sensor fusion or motor control. |
| Max Clock Frequency | 80 MHz; delivers 100 DMIPS and 3.42 CoreMark/MHz - sufficient for complex protocol stacks and UI rendering on integrated LCD. |
| Flash / SRAM | 1 MB dual-bank flash (read-while-write), 128 KB SRAM (32 KB with hardware parity); supports secure firmware updates and robust data logging. |
| Ultra-Low-Power Modes | 30 nA shutdown, 420 nA standby with RTC, 1.1 µA Stop 2 mode; extends battery life in coin-cell-powered applications beyond 10 years. |
| Analog Peripherals | 3× 12-bit ADC (5 Msps), 2× DAC, 2× op-amps with PGA, 2× comparators; enables precision analog front-end design without external signal conditioning. |
| Communication Interfaces | USB OTG FS, CAN 2.0B, 5× USART, 3× SPI, 3× I²C, 2× SAI, SDMMC, SWPMI; supports industrial connectivity, audio streaming, and legacy bus bridging. |
| Package & Pin Count | LQFP64 (10 × 10 mm); 51 general-purpose I/Os (most 5 V-tolerant), 14 I/Os with independent supply down to 1.08 V for low-voltage subsystem interfacing. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), ECOPACK2-compliant, with exposed thermal pad. Designed for reflow soldering and industrial temperature range (–40 °C to +105 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply / ground | Core logic supply (1.71–3.6 V); supports external SMPS input via VDD12 for sub-1 µA active current efficiency. |
| VREF+, VREF– | Analog reference inputs | Enable precise ADC/DAC operation with external or internal reference; decoupling critical for <1 LSB INL error. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15 | General-purpose I/Os | 51 GPIOs total; up to 14 configurable for independent 1.08–3.6 V supply - ideal for interfacing with low-voltage sensors or displays. |
| PA9/PA10, PA11/PA12 | USB DP/DM, USART1 TX/RX | Dedicated USB 2.0 full-speed PHY pins; no external transceiver needed - reduces BOM cost and board area. |
| PC13–PC15 | RTC oscillator inputs | Support 32.768 kHz crystal for hardware calendar and alarm functions; essential for time-stamped data logging. |
| NRST | Active-low reset input | Asynchronous reset with Schmitt trigger; compatible with push-button or supervisor IC assertion with 10 µs minimum pulse width. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables 0-wait-state execution from flash at 80 MHz - eliminates cache misses in deterministic real-time loops. |
| FlexPowerControl | Independent domain power gating (CPU, peripherals, regulator) - allows selective wake-up of UART while keeping ADC in deep sleep. |
| Built-in LCD Controller | Drives 8×40 or 4×44 segments with integrated step-up converter - eliminates external bias generator in portable display designs. |
| Capacitive Touch Sensing | 24-channel TSC supporting touchkey, linear, and rotary sensors - enables intuitive HMI without dedicated touch controller IC. |
| True Random Number Generator | FIPS-compliant entropy source - required for secure boot, TLS key generation, and anti-cloning mechanisms in certified devices. |
Applications
| Smart Utility Meter | Wearable Health Monitor |
|---|---|
|
Use Scenario: Battery-operated electricity/water meter with hourly consumption logging, tamper detection, and RF communication. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, RTC-based timestamping, and LoRaWAN stack execution. Use Value: 30 nA shutdown current and 420 nA RTC-enabled standby extend 10-year battery life; integrated LCD drives segment display without external driver. |
Use Scenario: ECG/PPG patch monitoring heart rate, SpO₂, and motion using dry electrodes and Bluetooth LE. IC Role / Device Role / Timing Role: Sensor hub aggregating analog front-end data, performing real-time QRS detection, and managing BLE advertising intervals. Use Value: Dual 12-bit ADCs sample at 5 Msps with hardware oversampling; 2× op-amps with PGA condition weak biopotential signals before digitization. |
| Industrial Wireless Sensor Node | Programmable Logic Controller (PLC) Edge Module |
|
Use Scenario: DIN-rail mounted node collecting temperature, humidity, and vibration data via Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol gateway translating Modbus requests to SPI-connected sensors and managing watchdog-triggered fail-safe outputs. Use Value: CAN 2.0B interface enables fieldbus integration; 51 GPIOs support isolated digital I/O expansion with 5 V tolerance for legacy industrial signaling. |
Use Scenario: Compact PLC module controlling solenoids, reading limit switches, and communicating with HMI via USB CDC virtual COM port. IC Role / Device Role / Timing Role: Real-time deterministic controller executing ladder logic with microsecond-level I/O response timing. Use Value: Advanced timers (TIM1/TIM8) provide PWM with dead-time insertion for motor drive; USB OTG FS enables field firmware updates without JTAG probe. |
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 CAN, LQFP32 package | Targeted at cost-sensitive, minimal-peripheral embedded controllers (e.g., simple sensor nodes) | Select when BOM cost and PCB footprint are primary constraints and LCD/CAN are unnecessary. |
| STM32L552RET6 | ARMv8-M TrustZone®, 512 KB flash, 256 KB SRAM, 2x AES accelerators, same LQFP64 package | Required for PSA Level 2-certified secure boot, encrypted firmware storage, and secure OTA updates | Select when hardware-enforced security isolation and cryptographic acceleration are mandatory for compliance. |
Compared with STM32L432KCU6, the STM32L476RGT6 provides 16× more flash and integrated LCD/CAN for richer HMI and industrial connectivity; compared with STM32L552RET6, it trades TrustZone security for lower power in non-certified applications - reducing active current by ~15% in SMPS mode.
Availability
STM32L476RGT6 is available at Aetrix Electronics and suitable for smart utility meters, wearable health monitors, industrial wireless sensor nodes, and compact PLC edge modules requiring stable component supply across multi-year production cycles.
Supply support for STM32L476RGT6 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, specializing in microcontrollers, power management, MEMS, and automotive ICs with vertical manufacturing capability.
The STM32L4 series is designed for ultra-low-power embedded applications demanding extended battery life, rich analog integration, and real-time performance - targeting IoT endpoints, portable medical devices, and energy-efficient industrial controls.
FAQ
What is the maximum operating temperature for STM32L476RGT6 in industrial applications?
The STM32L476RGT6 is qualified for industrial temperature range: –40 °C to +105 °C. This rating is validated per JEDEC JESD47 and applies to all LQFP64 variants. Thermal derating begins above 105 °C ambient, and junction temperature must remain ≤125 °C under sustained load with proper PCB copper pour and airflow.
Does STM32L476RGT6 support external memory interfaces?
Yes - it integrates a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, and NAND memories, plus a Quad SPI interface for high-speed serial flash. The FSMC operates at up to 60 MHz with programmable timing registers, enabling direct attachment of external display frame buffers or code-execution memory.
Can the internal SMPS be used with STM32L476RGT6?
No - the STM32L476RGT6 does not integrate an SMPS regulator. However, it supports external SMPS power supply via the VDD12 pin, enabling 39 µA/MHz active current (vs. 100 µA/MHz in LDO mode). An external DC-DC converter like the ST1PS01 must be used to drive VDD12 at 1.05–1.15 V for optimal efficiency.
Is USB OTG FS functionality available without external components?
Yes - the STM32L476RGT6 embeds a full-speed USB 2.0 PHY with integrated transceivers on PA11 (DM) and PA12 (DP). Only a single 1.5 kΩ pull-up resistor on DP (for device mode) and standard USB Type-A receptacle are required - no external PHY or level shifter is needed for basic CDC or HID implementations.
STM32L476RGT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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, 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:
- 51
- 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:
STM32L476RGT6 FAQ
1.How can I place an order for STM32L476RGT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476RGT6 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 STM32L476RGT6 reliable?
The price and inventory of STM32L476RGT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476RGT6 is usually 5 days.
3.What payment methods are accepted for STM32L476RGT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476RGT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476RGT6?
STM32L476RGT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476RGT6 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 STM32L476RGT6?
For technical support, including STM32L476RGT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476RGT6 requirements.
6.How does Aetrix verify that STM32L476RGT6 is sourced from the original manufacturer or authorized distributors?
All STM32L476RGT6 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 STM32L476RGT6 meets industry standards.
7.What is the process for return or replacement of STM32L476RGT6?
All STM32L476RGT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476RGT6, 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 STM32L476RGT6 part is unused and in its original packaging.
Return procedure for STM32L476RGT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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