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STMicroelectronics STM32L476MGY6TR
- Part No.:
- STM32L476MGY6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 81-UFBGA, WLCSP
- Datasheet:
-
STM32L476MGY6TR.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 81WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:8,884
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Product details
Overview
STM32L476MGY6TR 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 delivers 39 µA/MHz in SMPS-run mode, 420 nA Standby with RTC, and supports capacitive touch sensing - deployed in battery-powered medical wearables requiring long runtime and display capability.
For engineers reviewing the STM32L476MGY6TR datasheet, STM32L476MGY6TR pinout, STM32L476MGY6TR application, or STM32L476MGY6TR equivalent, key selection criteria include ultra-low-power mode current (e.g., 30 nA Shutdown), dual 12-bit DAC channels, LCD 8×40 drive capability, and CAN 2.0B interface integration for embedded telemetry systems.
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 internal LDO and external SMPS support. Its interconnect matrix decouples bus masters (CPU, DMA, peripherals) to sustain concurrent high-bandwidth operations without arbitration stalls.
It features three independent 12-bit ADCs (5 Msps each, hardware oversampling up to 16-bit), two operational amplifiers with programmable gain, and two ultra-low-power comparators - all with independent analog supply domains for noise isolation in mixed-signal sensor fusion applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP and control algorithms in resource-constrained edge nodes. |
| 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 Consumption | 39 µA/MHz in SMPS-run mode - reduces battery drain in always-on portable devices vs. LDO-based alternatives. |
| Low-Power Modes | 30 nA Shutdown (5 wakeup pins), 420 nA Standby with RTC - sustains calendar time and backup registers during multi-year storage. |
| Analog Peripherals | 3× 12-bit ADC (5 Msps), 2× 12-bit DAC, 2× OPAMP, 2× comparator - enables closed-loop sensor conditioning without external signal chain components. |
| Connectivity | USB OTG FS, CAN 2.0B, 5× USART, LPUART, 3× SPI, Quad-SPI, SDMMC - supports wired telemetry, motor control comms, and local storage expansion. |
| LCD Driver | 8×40 or 4×44 segment drive with integrated step-up converter - drives monochrome segment LCDs directly from single 3.3 V supply. |
Pinout & Package
STM32L476MGY6TR uses a 72-pin WLCSP (Wafer-Level Chip Scale Package) with 0.4 mm pitch, measuring 3.94 × 3.94 mm. This ultra-compact package targets space-constrained wearable and implantable designs where board area is at a premium.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power and ground | Supports 1.71–3.6 V operation; VDD must be decoupled per layout guidelines to maintain low-noise analog performance. |
| VDDA, VSSA | Analog domain supply/ground | Independent 1.62–3.6 V analog rail - mandatory separation from digital VDD prevents coupling noise into ADC/DAC paths. |
| VBAT | Backup power input | Supplies RTC and 32×32-bit backup registers during main power loss; accepts coin-cell or supercap voltage (1.65–3.6 V). |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 114 fast I/Os; most are 5 V-tolerant and support multiple alternate functions including USB, CAN, LCD, and touch sensing. |
| PC13–PC15 | RTC oscillator inputs | Connect to 32.768 kHz crystal; PC14/PC15 are dedicated LSE pins with built-in load capacitance (12.5 pF typical). |
| PD0–PD2 | USB OTG FS interface | DP/DM differential pair + ID pin; requires 1.5 kΩ pull-up on DP for full-speed device enumeration. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables dynamic voltage scaling and mode transitions (e.g., Stop→Run in 4 µs) - critical for burst-mode sensing with minimal latency penalty. |
| ART Accelerator™ | Zero-wait-state flash execution at 80 MHz - eliminates instruction cache misses in deterministic real-time control loops. |
| Batch Acquisition Mode (BAM) | Permits peripheral-triggered ADC/DAC conversions while CPU remains in low-power mode - extends battery life in periodic measurement systems. |
| Capacitive Touch Sensing (TSC) | 24-channel hardware-accelerated touch controller supporting touchkey, linear, and rotary sensors - replaces external touch ICs in HMI designs. |
| True Random Number Generator (RNG) | NIST SP800-90B compliant entropy source - satisfies cryptographic key generation requirements for secure boot and TLS handshakes. |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG/PPG acquisition, real-time heart rate calculation, and segmented LCD display in a wrist-worn device powered by a 120 mAh coin cell. IC Role / Device Role / Timing Role: Central MCU executing sensor fusion firmware, driving LCD via integrated controller, and managing USB-CDC for firmware updates. Use Value: 30 nA Shutdown current extends shelf life; 420 nA Standby with RTC maintains accurate timekeeping between measurements without external clock IC. | Use Scenario: Battery-backed gas/water meter with pulse counting, tamper detection, and LoRaWAN backhaul via UART-to-modem bridge. IC Role / Device Role / Timing Role: Primary controller handling metrology calculations, non-volatile event logging, and low-power wake-up via LPUART or external interrupt. Use Value: Dual 12-bit DACs generate precise reference voltages for analog front-end calibration; CAN interface enables legacy AMI node communication. |
| Portable Medical Diagnostic Tool | Industrial Sensor Node |
Use Scenario: Handheld ultrasound probe with analog front-end biasing, time-of-flight processing, and OLED/LCD display output. IC Role / Device Role / Timing Role: Signal processor running beamforming algorithms, managing high-speed ADC sampling, and driving display via LCD controller. Use Value: Three independent 12-bit ADCs sample multiple transducer channels simultaneously; ART Accelerator ensures consistent 80 MHz throughput without flash wait states. | Use Scenario: Wireless vibration sensor node mounted on rotating machinery, performing FFT analysis and transmitting alerts via CAN or UART-to-LoRa module. IC Role / Device Role / Timing Role: Edge analytics engine acquiring accelerometer data, executing spectral analysis, and managing power-gating of RF subsystem. Use Value: 39 µA/MHz SMPS-run efficiency minimizes thermal rise in sealed enclosures; 16-bit timer resolution supports precise RPM measurement from tachometer pulses. |
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 | 32 KB flash, 12 KB SRAM, no LCD, no CAN, 48 MHz max - smaller footprint (48-pin WLCSP), lower cost. | Suitable for simple sensor nodes without display or fieldbus connectivity. | Select when display, CAN, or >512 KB flash are unnecessary - reduces BOM cost and PCB area. |
| STM32U575ZIT6 | 2 MB flash, 784 KB SRAM, Arm Cortex-M33, TrustZone, 110 µA/MHz (SMPS), -40°C to 125°C. | Targets higher-security industrial gateways requiring PSA Level 3 certification and extended temperature operation. | Choose for next-gen designs needing hardware security, larger memory, and wider temp range - not drop-in compatible. |
Compared with STM32L432KCU6, STM32L476MGY6TR provides 32× more flash and integrated LCD/CAN for HMI-rich edge devices; versus STM32U575ZIT6, it offers superior ultra-low-power metrics (30 nA vs. 160 nA Shutdown) and proven qualification for medical wearables, albeit without TrustZone.
Availability
STM32L476MGY6TR is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, portable diagnostic tools, and industrial sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for STM32L476MGY6TR 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, sensors, and analog products for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, with emphasis on battery longevity, rich peripheral integration, and functional safety compliance (IEC 61508 SIL2).
FAQ
What is the maximum operating frequency and associated performance metric?
The STM32L476MGY6TR operates at up to 80 MHz, delivering 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz). This performance level is sustained via the ART Accelerator™, which eliminates flash wait states, enabling deterministic real-time execution for motor control and audio processing tasks.
Does this MCU 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. These interfaces enable external code execution, data logging buffers, or graphical frame buffer storage beyond on-chip SRAM limits.
How does the power architecture differ between LDO and SMPS modes?
In LDO mode, the internal regulator supplies core logic at ~1.2 V, consuming 100 µA/MHz. In SMPS mode, an external switched-mode power supply feeds VDD12 at 1.1 V, reducing active current to 39 µA/MHz - a 61% reduction that significantly extends battery life in continuous-operation applications.
Is the WLCSP72 package RoHS and REACH compliant?
Yes - the STM32L476MGY6TR in WLCSP72 packaging meets ECOPACK2 standards, ensuring full RoHS (2011/65/EU) and REACH (EC 1907/2006) compliance. The package uses lead-free solderable terminations and halogen-free molding compounds, certified per ST's material declarations.
STM32L476MGY6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 81-UFBGA, WLCSP
- 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, 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:
- 65
- 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:
STM32L476MGY6TR FAQ
1.How can I place an order for STM32L476MGY6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476MGY6TR 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 STM32L476MGY6TR reliable?
The price and inventory of STM32L476MGY6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476MGY6TR is usually 5 days.
3.What payment methods are accepted for STM32L476MGY6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476MGY6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476MGY6TR?
STM32L476MGY6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476MGY6TR 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 STM32L476MGY6TR?
For technical support, including STM32L476MGY6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476MGY6TR requirements.
6.How does Aetrix verify that STM32L476MGY6TR is sourced from the original manufacturer or authorized distributors?
All STM32L476MGY6TR 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 STM32L476MGY6TR meets industry standards.
7.What is the process for return or replacement of STM32L476MGY6TR?
All STM32L476MGY6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476MGY6TR, 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 STM32L476MGY6TR part is unused and in its original packaging.
Return procedure for STM32L476MGY6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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