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STMicroelectronics STM32L476ZGT6TR
- Part No.:
- STM32L476ZGT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
STM32L476ZGT6TR.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,298
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Product details
Overview
STM32L476ZGT6TR 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 sensors, portable medical devices, and smart metering systems requiring extended runtime and rich peripheral integration.
For engineers reviewing the STM32L476ZGT6TR datasheet, STM32L476ZGT6TR pinout, STM32L476ZGT6TR application, or STM32L476ZGT6TR equivalent, key selection criteria include its 39 µA/MHz SMPS-enabled run mode, 420 nA standby-with-RTC current, dual 12-bit DACs, and LQFP144 package compatibility for industrial HMI and energy-harvesting edge nodes.
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 multiple low-power modes - including Stop 2 (1.1 µA) and Shutdown (30 nA) - with 5 wakeup pins and 4 µs wake-up latency.
Peripherals include three 12-bit ADCs (5 Msps, hardware oversampling to 16-bit), two operational amplifiers with PGA, two ultra-low-power comparators, and 20 communication interfaces - notably USB OTG FS, CAN 2.0B, SDMMC, and dual SAI - all supported by a 14-channel DMA controller and true random number generator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max frequency, 100 DMIPS performance |
| Memory | 1 MB dual-bank flash (read-while-write), 128 KB SRAM (32 KB with parity) |
| Power Consumption | 39 µA/MHz in SMPS-run mode; 420 nA in Standby with RTC enabled |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps), 2× 12-bit DACs, 2× op-amps with PGA, 2× comparators |
| Communication | USB OTG FS, CAN 2.0B, 5× USART, 3× I²C, 3× SPI + Quad-SPI, 2× SAI, SDMMC |
| Package | LQFP144 (20 × 20 mm), 144-pin, ECOPACK2-compliant, Pb-free |
| Temperature Range | -40 °C to +105 °C (industrial grade) |
| Supply Voltage | 1.71 V to 3.6 V; supports external SMPS for optimized efficiency |
Pinout & Package
LQFP144 package: 20 × 20 mm body, 0.5 mm pitch, exposed thermal pad, 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; decoupling required per datasheet layout guidelines |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 114 fast I/Os; most 5 V-tolerant; up to 14 configurable for 1.08 V independent supply |
| PC13–PC15 | RTC oscillator inputs | Connect 32.768 kHz crystal for hardware calendar and alarm functions |
| PA11/PA12 | USB OTG FS D+/D− | Dedicated full-speed USB transceiver pins; require 1.5 kΩ pull-up on D+ |
| PB8/PB9 | I²C1_SCL/I²C1_SDA | Fast-mode Plus (1 Mbit/s) interface with SMBus/PMBus support |
| PD0/PD1 | OSC_IN/OSC_OUT | 4–48 MHz crystal oscillator input/output for system clock generation |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 30 nA shutdown mode and 4 µs wake-up from Stop, critical for duty-cycled sensor nodes |
| ART Accelerator™ | Eliminates flash wait states at 80 MHz, reducing code execution latency and dynamic power |
| Integrated SMPS support | Reduces active-mode current to 39 µA/MHz vs. 100 µA/MHz in LDO mode, extending battery life |
| LCD controller | Drives 8×40 or 4×44 segments with built-in step-up converter - no external bias required |
| Capacitive touch sensing | 24-channel TSC supports touchkey, linear, and rotary sensors without external components |
| Security peripherals | Firewall, CRC unit, 96-bit unique ID, and readout protection level 2 for firmware IP protection |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-operated electricity/water/gas meter with real-time tariff calculation and wireless reporting. IC Role / Device Role / Timing Role: Main application processor managing metrology ADC sampling, LCD display, secure data logging, and sub-GHz RF stack timing. Use Value: 420 nA standby-with-RTC enables >10-year battery life; dual 12-bit DACs calibrate analog front-end references. | Use Scenario: Handheld clinical-grade ECG device with multi-lead acquisition, waveform display, and Bluetooth LE upload. IC Role / Device Role / Timing Role: Central controller synchronizing 3× 12-bit ADCs (5 Msps), driving segment LCD, and managing USB/Bluetooth coexistence. Use Value: ART Accelerator ensures deterministic 80 MHz processing for real-time QRS detection; 39 µA/MHz SMPS mode extends single-charge runtime. |
| Industrial HMI Panel | Energy-Harvesting Sensor Node |
Use Scenario: DIN-rail mounted local operator interface with touch control, serial fieldbus connectivity, and status visualization. IC Role / Device Role / Timing Role: HMI engine handling capacitive touch (24-channel TSC), 8×40 LCD refresh, and dual CAN/UART protocol bridging. Use Value: 5 V-tolerant I/Os simplify interface to legacy 5 V logic; LCD step-up eliminates external charge pump. | Use Scenario: Wireless temperature/humidity node powered by solar cell or piezoelectric harvester with intermittent operation. IC Role / Device Role / Timing Role: Ultra-low-power supervisor managing energy storage, sensor polling, and LPUART wake-up triggered by environmental events. Use Value: 30 nA shutdown mode minimizes quiescent drain; LPUART allows asynchronous wake-up without full CPU activation. |
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 | Smaller footprint (48-pin WLCSP), 256 KB flash, no LCD or SMPS support, single 12-bit ADC | Targeted at compact, cost-sensitive sensor endpoints without display or high analog channel count | Select when board space and BOM cost outweigh need for LCD, dual DAC, or external SMPS interface |
| STM32L552RET6 | Arm Cortex-M33 with TrustZone, 512 KB flash, 256 KB SRAM, enhanced security, higher active power (61 µA/MHz) | Suitable for secure boot, encrypted OTA updates, and PSA-certified IoT gateways | Choose when hardware-enforced isolation and cryptographic acceleration are mandatory over lowest power |
Compared with STM32L432KCU6, the STM32L476ZGT6TR adds LCD, dual DAC, and SMPS support at higher pin count and power flexibility; versus STM32L552RET6, it trades TrustZone security for lower active and standby current in resource-constrained edge nodes.
Availability
STM32L476ZGT6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical diagnostics, and industrial HMI panels requiring stable component supply across multi-year production cycles.
Supply support for STM32L476ZGT6TR 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, specializing in microcontrollers, power management, and automotive ICs with strong focus on energy efficiency and industrial reliability.
The STM32L4 series is designed for ultra-low-power embedded applications demanding long battery life, rich analog integration, and robust real-time performance - especially in metering, wearables, and smart infrastructure.
FAQ
What is the maximum operating frequency and corresponding performance metric?
The STM32L476ZGT6TR operates at up to 80 MHz, delivering 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz). This performance is sustained via the ART Accelerator™, which enables zero-wait-state execution from flash memory - verified in DS10198 Rev 11 Section 3.2.
Does this MCU support external SMPS, and what is the power savings benefit?
Yes - the STM32L476ZGT6TR supports external SMPS via dedicated VDD12 and VDD12_IO pins. In SMPS-run mode, it achieves 39 µA/MHz versus 100 µA/MHz in LDO mode (DS10198 Table 28), reducing active power by >60% and significantly extending battery life in continuous-sensing applications.
How many ADC channels and resolution options does it provide?
It integrates three independent 12-bit ADCs, each capable of 5 Msps sampling. Hardware oversampling allows effective resolution up to 16 bits (with 256× oversampling), and all ADCs support differential inputs, injected/conversion modes, and analog watchdogs - detailed in DS10198 Sections 3.15 and 6.3.18.
Is the LQFP144 package RoHS-compliant and thermally rated for industrial use?
Yes - the LQFP144 package (20 × 20 mm, 0.5 mm pitch) is ECOPACK2-compliant (RoHS and halogen-free) and qualified for -40 °C to +105 °C operation. Thermal resistance θJA is 30.5 °C/W (DS10198 Section 7.2), validated for convection-cooled industrial PCB layouts.
STM32L476ZGT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 144-LQFP
- 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, 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:
STM32L476ZGT6TR FAQ
1.How can I place an order for STM32L476ZGT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476ZGT6TR 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 STM32L476ZGT6TR reliable?
The price and inventory of STM32L476ZGT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476ZGT6TR is usually 5 days.
3.What payment methods are accepted for STM32L476ZGT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476ZGT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476ZGT6TR?
STM32L476ZGT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476ZGT6TR 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 STM32L476ZGT6TR?
For technical support, including STM32L476ZGT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476ZGT6TR requirements.
6.How does Aetrix verify that STM32L476ZGT6TR is sourced from the original manufacturer or authorized distributors?
All STM32L476ZGT6TR 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 STM32L476ZGT6TR meets industry standards.
7.What is the process for return or replacement of STM32L476ZGT6TR?
All STM32L476ZGT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476ZGT6TR, 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 STM32L476ZGT6TR part is unused and in its original packaging.
Return procedure for STM32L476ZGT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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