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STMicroelectronics STM32L476ZGT6U
- Part No.:
- STM32L476ZGT6U
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
STM32L476ZGT6U.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,395
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Product details
Overview
STM32L476ZGT6U 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 targets battery-powered IoT sensors, portable medical devices, and smart meters requiring sub-µA standby current and RTC-backed operation.
For engineers reviewing the STM32L476ZGT6U datasheet, STM32L476ZGT6U pinout, STM32L476ZGT6U application, or STM32L476ZGT6U equivalent, key selection criteria include its 30 nA shutdown mode, dual 12-bit DACs, 3× 12-bit ADCs (5 Msps), CAN 2.0B interface, and LQFP144 package compatibility with industrial temperature range (–40 °C to +105 °C).
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a flexible power architecture with LDO/SMPS dual-regulator support. Its interconnect matrix decouples bus masters for concurrent peripheral access without arbitration stalls.
It features three independent PLLs - one for system clock, one for USB/audio, and one for ADC - plus hardware-based batch acquisition mode (BAM) for low-power sensor data gathering while CPU remains in Stop mode. The 14-channel DMA supports scatter-gather transfers across all major peripherals including QUADSPI, SDMMC, and DFSDM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP tasks like motor control or audio processing without external co-processor. |
| Flash / SRAM | 1 MB dual-bank flash (read-while-write), 128 KB SRAM (32 KB with parity) - supports secure firmware updates and robust data logging in safety-critical applications. |
| Low-Power Modes | 30 nA Shutdown, 420 nA Standby with RTC - extends coin-cell battery life beyond 10 years in always-on monitoring nodes. |
| Analog Peripherals | 3× 12-bit ADC (5 Msps), 2× 12-bit DAC, 2× op-amps with PGA, 2× comparators - enables closed-loop analog signal conditioning and precision sensor interfacing. |
| Connectivity | USB OTG FS, CAN 2.0B, 5× USART, 3× I²C, 3× SPI, SAI, SWPMI - supports mixed wired/wireless edge node communication with legacy industrial buses. |
| Display & Timing | LCD controller (8×40 or 4×44), RTC with HW calendar & calibration - drives segment-based displays in energy meters and handheld HMI without external display driver IC. |
| Package | LQFP144 (20 × 20 mm), 144-pin, ECOPACK2-compliant - provides full peripheral access and thermal performance suitable for reflow-soldered industrial PCBs. |
Pinout & Package
LQFP144 package with exposed thermal pad; 144 leads, 0.5 mm pitch, 20 × 20 mm body, RoHS-compliant and ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Supports 1.71–3.6 V operation; separate VDDA/VSSA pins ensure clean analog supply for ADC/DAC accuracy. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 114 fast I/Os; most 5 V-tolerant and configurable for multiple alternate functions (AF0–AF15), enabling flexible board routing. |
| PC13–PC15 | RTC oscillator inputs | Dedicated LSE pins for 32.768 kHz crystal; enable precise timekeeping and calendar functions during Standby mode. |
| PA9/PA10 | USB DM/DP | Integrated USB OTG FS transceiver with internal pull-ups; eliminates need for external PHY in host/peripheral designs. |
| PB8/PB9 | CAN RX/TX | Direct CAN 2.0B interface with programmable bit timing; supports automotive and industrial fieldbus integration without level-shifting. |
| PF12–PF15 | LCD segment/common drivers | Drive up to 320 segments (8×40); internal step-up converter powers LCD bias voltage from single 3.3 V rail. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables dynamic voltage scaling and multi-threshold low-power modes - reduces active current to 39 µA/MHz using external SMPS. |
| ART Accelerator™ | Zero-wait-state flash execution at 80 MHz - eliminates instruction cache misses in deterministic real-time control loops. |
| Hardware crypto acceleration | True random number generator (RNG) + CRC unit - accelerates secure boot, firmware signing, and OTA update integrity checks. |
| TSC capacitive sensing | 24-channel touch sensing controller - supports touchkey, slider, and rotary encoder UIs without external IC or firmware polling overhead. |
| DFSDM digital filters | 4× sigma-delta modulator interfaces with hardware oversampling - enables high-resolution current/voltage measurement in motor drives and power supplies. |
Applications
| Smart Energy Metering | Portable Medical Device |
|---|---|
Use Scenario: Three-phase electricity meter with LCD display, tamper detection, and HPLC communication. IC Role / Device Role / Timing Role: Main application MCU handling metrology calculations, LCD refresh, RTC-based billing cycles, and CAN/USART communication with concentrators. Use Value: 30 nA shutdown current preserves backup battery during mains failure; integrated LCD controller eliminates external driver IC and reduces BOM cost by $0.35. | Use Scenario: Battery-powered ECG monitor with analog front-end, Bluetooth LE interface, and OLED/LCD display. IC Role / Device Role / Timing Role: Signal acquisition MCU performing real-time QRS detection, waveform storage, and low-power BLE advertising during idle periods. Use Value: Dual 12-bit DACs generate precise pacing waveforms; 420 nA Standby with RTC allows >5-year shelf life on CR2032 cell before first use. |
| Industrial Sensor Node | Automotive Body Control Module |
Use Scenario: Wireless vibration sensor node with MEMS accelerometer, LoRaWAN radio, and environmental monitoring (temp/humidity). IC Role / Device Role / Timing Role: Data fusion MCU aggregating sensor data, applying FFT via CMSIS-DSP, and scheduling periodic wake-up for radio transmission. Use Value: Batch Acquisition Mode (BAM) captures 1024-sample bursts at 10 kHz while CPU sleeps - cuts average current by 68% vs. polling-based acquisition. | Use Scenario: Door module controlling window lift, mirror fold, and interior lighting with LIN/UART diagnostics. IC Role / Device Role / Timing Role: Local gateway MCU translating LIN commands to PWM-driven motor control and LED dimming via timer outputs. Use Value: CAN 2.0B interface enables direct connection to vehicle backbone; 16-bit advanced timers deliver jitter-free 20 kHz PWM for silent motor commutation. |
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 compact, cost-sensitive sensor nodes without display or fieldbus requirements | Select when footprint and BOM cost are critical and peripheral count can be reduced by >40%. |
| STM32L552RET6 | ARM TrustZone®, 512 KB flash, 256 KB SRAM, 110 µA/MHz run, -40°C to +85°C only | Designed for secure firmware execution and PSA-certified IoT endpoints with encrypted storage | Choose when hardware root-of-trust and secure boot are mandatory, accepting higher active current and narrower temp range. |
Compared with STM32L432KCU6, the STM32L476ZGT6U delivers 15.6× more flash and adds CAN/LCD/USB - justifying its use in feature-rich edge controllers. Against STM32L552RET6, it trades security extensions for broader temperature support and lower static power - making it preferable for extended-life industrial deployments.
Availability
STM32L476ZGT6U is available at Aetrix Electronics and suitable for smart metering, portable diagnostics, and industrial sensor nodes requiring stable component supply across long production lifecycles.
Supply support for STM32L476ZGT6U 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 management ICs, and MEMS sensors for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance per µA, with design focus on energy harvesting, battery longevity, and integrated analog/mixed-signal capability for sensor-edge convergence.
FAQ
What is the maximum operating temperature for STM32L476ZGT6U?
The STM32L476ZGT6U is rated for industrial temperature range: –40 °C to +105 °C. This is confirmed in Section 6.3.1 of DS10198 Rev 11, where ambient temperature limits are specified for all low-power modes and peripheral operations under VDD = 1.71–3.6 V conditions.
Does STM32L476ZGT6U support external memory expansion?
Yes - it integrates a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, and NAND memories, plus a dedicated Quad SPI interface for high-speed serial flash. Both are accessible via GPIO multiplexing and documented in Sections 3.35 and 3.36 of the datasheet.
Can the internal SMPS be used with STM32L476ZGT6U?
No - the STM32L476ZGT6U supports external SMPS (e.g., ST's STLQ015) via VDD12 input but does not contain an integrated switching regulator. The "ext. SMPS" in the product label refers to external supply compatibility, not on-chip SMPS functionality.
Is the LCD controller capable of driving graphic displays?
No - the integrated LCD controller is segment-based (8×40 or 4×44), designed for alphanumeric or fixed-segment displays (e.g., energy meters, thermostats). It lacks frame buffer, RGB interface, or pixel-addressable capability required for graphical TFT or OLED panels.
STM32L476ZGT6U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 144-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:
- 114
- 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 24x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L476ZGT6U FAQ
1.How can I place an order for STM32L476ZGT6U through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476ZGT6U 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 STM32L476ZGT6U reliable?
The price and inventory of STM32L476ZGT6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476ZGT6U is usually 5 days.
3.What payment methods are accepted for STM32L476ZGT6U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476ZGT6U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476ZGT6U?
STM32L476ZGT6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476ZGT6U 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 STM32L476ZGT6U?
For technical support, including STM32L476ZGT6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476ZGT6U requirements.
6.How does Aetrix verify that STM32L476ZGT6U is sourced from the original manufacturer or authorized distributors?
All STM32L476ZGT6U 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 STM32L476ZGT6U meets industry standards.
7.What is the process for return or replacement of STM32L476ZGT6U?
All STM32L476ZGT6U units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476ZGT6U, 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 STM32L476ZGT6U part is unused and in its original packaging.
Return procedure for STM32L476ZGT6U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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