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STMicroelectronics STM32L476JEY6VTR
- Part No.:
- STM32L476JEY6VTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 72-UFBGA, WLCSP
- Datasheet:
-
STM32L476JEY6VTR.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 72WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,115
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Product details
Overview
STM32L476JEY6VTR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 512 KB flash, 128 KB SRAM, USB OTG FS, LCD controller, and integrated SMPS support. It delivers 39 µA/MHz run current in SMPS mode, 420 nA Standby with RTC, and supports capacitive touch sensing for battery-powered portable instrumentation.
For engineers reviewing the STM32L476JEY6VTR datasheet, STM32L476JEY6VTR pinout, STM32L476JEY6VTR application, or STM32L476JEY6VTR equivalent, key selection criteria include ultra-low-power mode timing behavior, LCD segment drive capability, dual 12-bit DAC channel resolution, 3× 12-bit ADC concurrency at 5 Msps, and UFBGA144 package thermal performance under industrial temperature cycling.
Technical Context
The device 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 FlexPowerControl architecture supports five low-power modes - Shutdown (30 nA), Standby (120 nA), Stop 2 (1.1 µA), and VBAT operation (300 nA) - with hardware calendar RTC and batch acquisition mode (BAM) for sensor data aggregation.
It features three independent analog domains: one for 3× 12-bit ADCs (5 Msps, 16-bit oversampling), another for 2× operational amplifiers with programmable gain, and a third for 2× ultra-low-power comparators and 2× 12-bit DACs with sample-and-hold. Clocking includes triple PLLs (system/USB/audio), auto-trimmed multispeed oscillator (±0.25%), and LSE-synchronized 32 kHz RC.
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 without external co-processor |
| Flash / SRAM | 512 KB flash (2-bank RWW), 128 KB SRAM (32 KB parity-protected) - supports secure firmware updates and safety-critical data buffering |
| Power Consumption | 39 µA/MHz (SMPS mode), 420 nA Standby + RTC - extends coin-cell battery life beyond 10 years in metering applications |
| Analog Peripherals | 3× 12-bit ADC @ 5 Msps, 2× 12-bit DAC, 2× OPAMP, 2× COMP - enables closed-loop analog signal conditioning and sensor excitation |
| Display Interface | LCD controller supporting 8×40 or 4×44 segments with integrated step-up converter - drives monochrome segment LCDs without external boost IC |
| Communication | USB OTG FS, CAN 2.0B, 5× USART, 3× SPI, 3× I²C, 2× SAI, SDMMC - supports wired connectivity, motor control feedback, and audio streaming |
| Package | UFBGA144 (10 × 10 mm, 0.5 mm pitch) - provides high I/O density and thermal efficiency for compact industrial PCB layouts |
Pinout & Package
UFBGA144 package with 0.5 mm ball pitch, 10 × 10 mm body size, and ECOPACK2-compliant lead-free finish. Designed for automated reflow assembly and thermal reliability in extended temperature environments (–40 °C to +105 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Supports 1.71–3.6 V operation; decoupling required per STM32L476xx layout guidelines to maintain SMPS stability |
| VDDA, VSSA | Analog domain supply and ground | Independent 1.62–3.6 V rail for ADC/DAC/OPAMP - must be filtered separately to preserve 12-bit linearity |
| VBAT | Backup power supply | Connects to coin cell for RTC and 32×32-bit backup registers during main power loss (300 nA quiescent) |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 114 fast I/Os; most 5 V-tolerant; 14 pins support independent 1.08–3.6 V supply for mixed-voltage interfacing |
| PC13–PC15 | RTC-related functions | PC13 = RTC_OUT, PC14/PC15 = LSE crystal inputs - require 12.5 pF load capacitance and tight layout for ±20 ppm accuracy |
| PD0–PD7 | LCD segment/common drivers | Drive up to 44 commons / 80 segments directly; internal step-up converter eliminates need for external DC-DC boost |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl low-power modes | 30 nA Shutdown, 120 nA Standby, 420 nA Standby+RTC - enables decade-long battery life in smart sensors and wearables |
| ART Accelerator™ | Zero-wait-state execution from flash at 80 MHz - eliminates external RAM dependency for deterministic real-time response |
| Capacitive Touch Sensing (TSC) | 24-channel support for touchkey, linear, and rotary sensors - replaces mechanical buttons with single-chip solution and no external components |
| Dual 12-bit DAC with sample-and-hold | Independent output channels with 1 µs settling time - generates precise analog waveforms for calibration signals or actuator biasing |
| True Random Number Generator (RNG) | NIST SP800-90B compliant entropy source - satisfies cryptographic key generation requirements for secure boot and OTA updates |
Applications
| Portable Medical Instrumentation | Smart Utility Metering |
|---|---|
Use Scenario: Handheld blood glucose monitor with LCD display, capacitive touch UI, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Primary MCU managing sensor interface (ADC), LCD refresh (8×40), touch input (TSC), USB charging negotiation, and low-power sleep scheduling. Use Value: 39 µA/MHz SMPS-mode runtime and 420 nA RTC-enabled Standby extend CR2032 battery life to >5 years between replacements. | Use Scenario: Battery-backed smart water/gas meter with pulse counting, tamper detection, and RF mesh communication. IC Role / Device Role / Timing Role: System controller handling metrology ADC sampling, RTC-based billing intervals, EEPROM logging, and LPUART wake-up from deep sleep. Use Value: 30 nA Shutdown mode with 5 wakeup pins ensures rapid response to flow pulses while maintaining 10+ year battery longevity. |
| Industrial HMI Panels | Low-Power Environmental Sensors |
Use Scenario: DIN-rail mounted panel with 4×44-segment LCD, tactile buttons, and RS-485 Modbus interface. IC Role / Device Role / Timing Role: Display controller driving LCD via integrated step-up converter, managing 2× OPAMP signal conditioning for analog inputs, and executing Modbus RTU protocol stack. Use Value: Single-chip LCD drive eliminates external boost IC and reduces BOM cost by $0.35/unit at volume. | Use Scenario: Wireless soil moisture/temperature node powered by solar harvester and supercapacitor. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating ADC readings, running BAM for burst acquisition, and triggering RF transmission only on threshold events. Use Value: Batch Acquisition Mode reduces average system current by 68% vs. polling-based sampling, extending field deployment to 3+ years. |
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 |
|---|---|---|---|
| STM32L433RCT6 | 384 KB flash, no LCD controller, no SMPS support, same UFBGA144 package | Suitable for non-display, non-battery-charging applications requiring lower cost and identical footprint | Select when LCD and external SMPS integration are unnecessary and flash budget is ≤384 KB |
| STM32L552RET6 | ARM TrustZone®, 512 KB flash, 256 KB SRAM, 110 µA/MHz (Run), no LCD controller | Targets secure firmware execution and PSA-certified IoT endpoints where security outweighs display capability | Choose when hardware root-of-trust, secure boot, and cryptographic acceleration are mandatory |
Compared with STM32L433RCT6, the STM32L476JEY6VTR adds LCD drive and SMPS control at higher active current; versus STM32L552RET6, it trades TrustZone security for integrated display and ultra-deep sleep efficiency - making it optimal for cost-sensitive, battery-powered HMI designs.
Availability
STM32L476JEY6VTR is available at Aetrix Electronics and suitable for portable medical instrumentation, smart utility metering, industrial HMI panels, and low-power environmental sensors requiring stable component supply across multi-year production cycles.
Supply support for STM32L476JEY6VTR 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 sensing technologies for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding long battery life, rich analog integration, and robust real-time performance - designed specifically for portable instrumentation, energy metering, and intelligent edge nodes.
FAQ
What is the maximum operating temperature range for STM32L476JEY6VTR?
The STM32L476JEY6VTR is qualified for industrial operation from –40 °C to +105 °C ambient temperature. This rating is validated per JEDEC JESD47 and confirmed in Section 6.3.1 of DS10198 Rev 11, with full functionality maintained across the range including RTC calibration, ADC linearity, and flash endurance.
Does STM32L476JEY6VTR 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. The FSMC implements 8-/16-bit data bus with address multiplexing and configurable timing parameters, enabling direct connection to external displays or data loggers without glue logic.
How many independent voltage domains does the analog subsystem use?
The analog subsystem uses three independent voltage domains: VDDA/VSSA for ADC/DAC/OPAMP/COMP, VREF+ for reference buffer, and VLCD for LCD step-up converter. Each requires dedicated filtering per Section 7.2.2 of the datasheet to ensure 12-bit accuracy and noise immunity in mixed-signal operation.
Is the UFBGA144 package RoHS and REACH compliant?
Yes - the UFBGA144 package is ECOPACK2-compliant, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full material declarations and substance compliance reports are available through ST's Product Change Notification (PCN) portal under document number ECOPACK2-STM32L476.
STM32L476JEY6VTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 72-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:
- 57
- Program Memory Size:
- 512KB (512K 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:
STM32L476JEY6VTR FAQ
1.How can I place an order for STM32L476JEY6VTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476JEY6VTR 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 STM32L476JEY6VTR reliable?
The price and inventory of STM32L476JEY6VTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476JEY6VTR is usually 5 days.
3.What payment methods are accepted for STM32L476JEY6VTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476JEY6VTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476JEY6VTR?
STM32L476JEY6VTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476JEY6VTR 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 STM32L476JEY6VTR?
For technical support, including STM32L476JEY6VTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476JEY6VTR requirements.
6.How does Aetrix verify that STM32L476JEY6VTR is sourced from the original manufacturer or authorized distributors?
All STM32L476JEY6VTR 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 STM32L476JEY6VTR meets industry standards.
7.What is the process for return or replacement of STM32L476JEY6VTR?
All STM32L476JEY6VTR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476JEY6VTR, 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 STM32L476JEY6VTR part is unused and in its original packaging.
Return procedure for STM32L476JEY6VTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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