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STMicroelectronics STM32L476QGI6
- Part No.:
- STM32L476QGI6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 132-UFBGA
- Datasheet:
-
STM32L476QGI6.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 132UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:918
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Product details
Overview
STM32L476QGI6 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 (8×40), and external SMPS support. It delivers 39 µA/MHz in SMPS-run mode and 420 nA Standby with RTC-enabling battery-powered medical sensors and portable industrial HMI displays.
For engineers reviewing the STM32L476QGI6 datasheet, STM32L476QGI6 pinout, STM32L476QGI6 application, or STM32L476QGI6 equivalent, key selection criteria include its dual-voltage I/O capability (1.08 V–3.6 V), 24-channel capacitive touch sensing, and hardware-accelerated crypto (AES-128/256, SHA-256, PKA) for secure edge node firmware updates.
Technical Context
The STM32L476QGI6 integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a 32-bit interconnect matrix for concurrent peripheral access. Its power architecture includes three independent voltage domains (VDD, VDDA, VDDIO2), supporting dynamic voltage scaling and flexible low-power modes including Stop 2 (1.1 µA) with LPUART wake-up.
It implements dual-bank flash with read-while-write capability and hardware parity on 32 KB of SRAM. The analog subsystem features three 12-bit ADCs (5 Msps total), two 12-bit DACs, two op-amps with programmable gain, and two ultra-low-power comparators-all with independent supply rails for noise isolation in mixed-signal applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions; enables real-time motor control and sensor fusion algorithms. |
| Max Clock Frequency | 80 MHz; achieves 100 DMIPS and 273.55 CoreMark® score for deterministic embedded control. |
| Flash Memory | 1 MB dual-bank; supports seamless firmware updates via bank swapping without system interruption. |
| SRAM | 128 KB total, including 32 KB with hardware parity; ensures data integrity in safety-critical logging tasks. |
| Low-Power Run Current | 39 µA/MHz @ 3.3 V with external SMPS; reduces battery drain in always-on IoT endpoints. |
| ADC Performance | 3× 12-bit ADCs, 5 Msps aggregate sampling; supports simultaneous multi-channel sensor acquisition (e.g., temperature, pressure, humidity). |
| USB Interface | USB OTG FS with Link Power Management (LPM) and Battery Charging Detection (BCD); enables direct connection to host PCs or charging adapters without external PHY. |
Pinout & Package
STM32L476QGI6 uses a UFBGA144 (10 × 10 mm, 0.8 mm pitch) package with 114 fast I/Os-most 5 V-tolerant-and dedicated pins for LCD segment/common drive, USB D+/D−, and external SMPS feedback/control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Independent rails enable analog/digital domain isolation and low-noise sensor signal conditioning. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | 114 GPIOs with configurable pull-up/down, alternate functions, and 5 V tolerance for legacy interface compatibility. |
| PC13–PC15 | RTC oscillator pins | Support 32.768 kHz crystal for autonomous calendar/timekeeping during VBAT operation (300 nA). |
| PD0–PD15 | LCD segment/common drivers | Directly drive 8×40 or 4×44 segments with internal step-up converter-eliminates external bias circuitry. |
| PA11/PA12 | USB OTG FS D+/D− | Full-speed USB transceiver with integrated termination and slew-rate control; no external resistors required. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 30 nA Shutdown mode with 5 wakeup pins-ideal for energy-harvesting sensor nodes requiring years of operation on coin cells. |
| Batch Acquisition Mode (BAM) | Permits CPU sleep while peripherals (ADC, timers, DMA) collect and pre-process data-reducing active time by >60% in periodic sensing. |
| Capacitive Touch Sensing (TSC) | 24-channel hardware-accelerated touch controller supporting touchkey, linear, and rotary sensors-no external IC needed for HMI interfaces. |
| Hardware Crypto Engine | AES-128/256, SHA-256, and Public Key Accelerator (PKA) offload encryption/decryption-secures OTA updates without impacting real-time task scheduling. |
| DFSDM + Sigma-Delta Filtering | 4 digital filters for oversampled sigma-delta modulator inputs-enables high-resolution current/voltage measurement in motor drives or power supplies. |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition with Bluetooth LE telemetry and local display. IC Role / Device Role / Timing Role: Central MCU managing analog front-end (ADC, OPAMP), LCD driver, BLE interface, and ultra-low-power scheduling. Use Value: 420 nA Standby with RTC maintains timekeeping between measurements; BAM reduces average current to <10 µA during sensor polling cycles. | Use Scenario: Tamper-resistant electricity meter with metrology ADC, secure firmware update, and LCD display. IC Role / Device Role / Timing Role: Metrology controller with isolated analog acquisition, cryptographic verification, and real-time billing timestamping. Use Value: Hardware AES/SHA ensures firmware authenticity; dual-bank flash allows safe field updates without service interruption. |
| Industrial HMI Panel | Portable Gas Detector |
Use Scenario: Ruggedized touchscreen panel for PLC control with local data logging and alarm management. IC Role / Device Role / Timing Role: Human-machine interface processor driving 4×44 LCD, capacitive touch, SDMMC storage, and CAN bus communication. Use Value: Integrated LCD controller eliminates external display driver IC; 114 GPIOs support custom button/keypad matrix and status LEDs. | Use Scenario: Battery-operated handheld gas analyzer with electrochemical sensor interface and audible/visual alarms. IC Role / Device Role / Timing Role: Low-power sensor hub acquiring analog signals, performing baseline correction, and triggering alerts via buzzer/LCD. Use Value: 30 nA Shutdown mode extends shelf life; 2× ultra-low-power comparators detect threshold breaches without waking CPU. |
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 controller, no DFSDM, 48-pin WLCSP | Suitable for compact, cost-sensitive sensor nodes without display or high-resolution metrology needs | Select when footprint and BOM cost outweigh LCD/DFSDM requirements |
| STM32L562VEJ6 | ARM TrustZone®, 512 KB flash, 256 KB SRAM, 110 µA/MHz run, -40°C to 105°C | Required for applications needing hardware-enforced security partitioning and extended temperature range | Select when PSA Level 3 certification or secure boot enforcement is mandatory |
Compared with STM32L432KCU6, the STM32L476QGI6 adds LCD, DFSDM, and 1 MB flash for richer HMI and precision sensing; versus STM32L562VEJ6, it trades TrustZone and higher temp rating for lower active current and proven toolchain maturity in battery-constrained designs.
Availability
STM32L476QGI6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial HMI panels, and portable gas detectors requiring stable component supply across multi-year production cycles.
Supply support for STM32L476QGI6 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 µA, combining energy efficiency with rich peripheral integration-including LCD, USB, crypto, and analog subsystems-for battery-powered edge devices.
FAQ
What is the maximum operating temperature range for STM32L476QGI6?
The STM32L476QGI6 is rated for operation from –40 °C to +105 °C (industrial grade), as confirmed in Section 6.3.1 of DS10198 Rev 11. This range applies to all UFBGA144 variants and is validated under full peripheral activation, including LCD and USB OTG functionality.
Does STM32L476QGI6 support external memory expansion?
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. Both controllers are accessible via dedicated address/data buses and support wait-state configuration for timing-critical applications like waveform capture buffers.
How many independent power domains does STM32L476QGI6 have?
The device features three independent power domains: VDD (digital core), VDDA (analog), and VDDIO2 (I/O bank 2). This separation allows analog peripherals to remain powered during low-power modes while digital logic sleeps, and enables 1.08 V I/O operation for interfacing with low-voltage sensors or logic families.
Is the STM32L476QGI6 pin-compatible with other STM32L476 variants?
Yes-UFBGA144-packaged STM32L476 variants (e.g., STM32L476RGT6, STM32L476ZGT6) share identical pinouts and electrical characteristics. Differences are limited to flash/SRAM size and peripheral enablement flags; software migration requires only reconfiguration of memory-mapped registers and clock tree settings.
STM32L476QGI6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 132-UFBGA
- 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:
- 109
- 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 19x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L476QGI6 FAQ
1.How can I place an order for STM32L476QGI6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476QGI6 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 STM32L476QGI6 reliable?
The price and inventory of STM32L476QGI6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476QGI6 is usually 5 days.
3.What payment methods are accepted for STM32L476QGI6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476QGI6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476QGI6?
STM32L476QGI6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476QGI6 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 STM32L476QGI6?
For technical support, including STM32L476QGI6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476QGI6 requirements.
6.How does Aetrix verify that STM32L476QGI6 is sourced from the original manufacturer or authorized distributors?
All STM32L476QGI6 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 STM32L476QGI6 meets industry standards.
7.What is the process for return or replacement of STM32L476QGI6?
All STM32L476QGI6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476QGI6, 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 STM32L476QGI6 part is unused and in its original packaging.
Return procedure for STM32L476QGI6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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