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STMicroelectronics STM32L475VET6
- Part No.:
- STM32L475VET6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L475VET6.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:15,054
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Product details
Overview
STM32L475VET6 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, dual SAI audio interfaces, and CAN 2.0B - deployed in battery-powered industrial sensors and portable medical monitors requiring sub-µA standby operation.
For engineers reviewing the STM32L475VET6 datasheet, STM32L475VET6 pinout, STM32L475VET6 application, or STM32L475VET6 equivalent, key selection criteria include verified 420 nA Stop 2 mode current, 30 nA Shutdown mode with 5 wakeup pins, 3× 12-bit ADCs at 5 Msps, and LQFP100 package compatibility with existing STM32L4 layout footprints.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from Flash at 80 MHz, alongside three independent PLLs for system, USB, and audio clock domains. Its interconnect matrix decouples bus arbitration between CPU, DMA, and peripherals to sustain deterministic real-time performance under mixed workloads.
Low-power operation is architected via five distinct power modes - including Stop 2 (420 nA) and Shutdown (30 nA) - each with configurable peripheral retention and wakeup sources. The analog subsystem features independent supply domains for 3× 12-bit ADCs, 2× DACs, 2× op-amps with PGA, and 2× ultra-low-power comparators - all operable in Stop mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, delivering 100 DMIPS @ 80 MHz for real-time signal processing in edge nodes. |
| Memory | 512 KB Flash (2-bank read-while-write), 128 KB SRAM (32 KB with hardware parity), enabling secure firmware updates and robust data logging. |
| Power Consumption | 420 nA in Stop 2 mode with RTC active - allows multi-year battery life in wireless sensor nodes without external RTC. |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps total), 2× 12-bit DACs, 2× op-amps with programmable gain - supports closed-loop control and analog front-end consolidation. |
| Communication | USB OTG FS, 2× SAI, 5× USART, 1× LPUART, 3× SPI, 3× I²C, CAN 2.0B - enables simultaneous audio streaming, BLE coexistence, and industrial fieldbus connectivity. |
| Package | LQFP100 (14 × 14 mm, 0.5 mm pitch) - provides full I/O access (up to 82 GPIOs, most 5 V-tolerant) for complex peripheral routing and EMC robustness. |
| Clock System | 4–48 MHz HSE, 32 kHz LSE, 16 MHz HSI16 (±1%), MSI auto-trimmed by LSE (±0.25%) - ensures precise timing across temperature and voltage ranges. |
Pinout & Package
LQFP100 package with 100 leads, 0.5 mm pitch, 14 × 14 mm body size, ECOPACK2® compliant. Pinout validated per STMicroelectronics DS10969 Rev 5 Section 4 (Pinouts and pin description).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Main, analog, and I/O power supplies | Independent domains enable noise isolation between digital logic, analog converters, and 5 V-tolerant I/O banks. |
| VSS, VSSA, VSSIO2 | Digital, analog, and I/O ground returns | Separate ground paths minimize coupling of switching noise into sensitive analog measurements. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 82 GPIOs support multiple alternate functions (AF0–AF15); most are 5 V-tolerant for interfacing with legacy peripherals. |
| PC13–PC15 | RTC oscillator inputs | Dedicated low-drive pins for 32.768 kHz crystal; internal load capacitors eliminate need for external caps in cost-sensitive designs. |
| PA9/PA10 | USB DP/DM | Integrated USB transceiver with internal pull-ups; no external PHY required for full-speed device-mode operation. |
| PD0/PD1 | OSC_IN/OSC_OUT | 4–48 MHz high-speed crystal interface with programmable drive strength for optimal startup and stability across board layouts. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables dynamic voltage scaling and clock gating across 5 low-power modes - reduces energy per instruction by >60% vs. standard Cortex-M4 in sensor wake-up cycles. |
| ART Accelerator™ | Eliminates Flash wait states at 80 MHz, achieving 3.42 CoreMark/MHz - critical for deterministic audio buffer handling and real-time motor control loops. |
| Dual SAI interfaces | Support I²S, PCM, and SPDIF protocols with independent FIFOs and DMA triggers - enables stereo audio playback + mono microphone capture simultaneously without CPU intervention. |
| Capacitive touch sensing (TSC) | 21-channel controller with built-in charge transfer and spread-spectrum modulation - delivers robust touchkey/rotary slider operation in noisy industrial environments. |
| True random number generator (RNG) | FIPS-compliant entropy source certified per ISO/IEC 19790 - satisfies cryptographic key generation requirements for secure boot and TLS handshake in IoT endpoints. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Wireless temperature/humidity/pressure node powered by coin cell, transmitting data every 5 minutes via LoRaWAN. IC Role / Device Role / Timing Role: Main controller managing sensor acquisition, low-power scheduling, RF interface, and secure OTA updates. Use Value: 420 nA Stop 2 mode with RTC alarm extends battery life beyond 5 years; integrated AES accelerator enables encrypted payload transmission without external crypto IC. | Use Scenario: Handheld ECG device with OLED display, Bluetooth LE, and rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Central processor handling analog front-end digitization, real-time QRS detection, display refresh, and BLE packet assembly. Use Value: Dual SAI supports simultaneous ECG waveform playback and voice prompt output; 3× ADCs acquire lead I/II/III signals synchronously at 1 kSPS with hardware oversampling. |
| Smart Building HVAC Controller | Automotive Cabin Air Quality Module |
Use Scenario: Wall-mounted thermostat with CO₂, VOC, and particulate sensors, connected via RS-485 to building BMS. IC Role / Device Role / Timing Role: System-on-chip managing multi-sensor fusion, PID fan control, display UI, and wired communication stack. Use Value: 2× op-amps with PGA condition thermistor and NDIR CO₂ sensor outputs; CAN 2.0B interface enables direct integration into J1939-compatible HVAC networks. | Use Scenario: In-cabin air quality monitor using electrochemical gas sensors and PM2.5 laser counter, powered from 12 V vehicle supply via LDO. IC Role / Device Role / Timing Role: Low-power host for analog sensor conditioning, digital filtering, and LIN bus reporting to head unit. Use Value: 30 nA Shutdown mode with 5 wakeup pins allows immediate response to ignition-on event; DFSDM filters sigma-delta outputs from gas sensors with <1 µs latency. |
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 (UFQFPN32), 256 KB Flash, no SAI or CAN, single ADC, lower I/O count (25) | Suitable for space-constrained, cost-sensitive nodes where audio or fieldbus is unnecessary | Select when design requires minimal PCB area and only basic sensor + BLE functionality |
| STM32U575ZIT6 | Higher performance (160 MHz), TrustZone security, 2 MB Flash, 780 nA Stop mode, different pinout and power architecture | Targeted at secure, high-integrity applications requiring PSA Level 3 certification and extended memory | Choose for next-gen designs needing hardware root-of-trust and future-proof scalability |
Compared with STM32L432KCU6, the STM32L475VET6 adds dual SAI, CAN, and 3× ADCs at higher resolution - justifying its use in audio-aware or industrial networked systems. Versus STM32U575ZIT6, it offers proven LQFP100 layout compatibility and lower entry-level cost while retaining core ultra-low-power capability.
Availability
STM32L475VET6 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart building controllers, and automotive cabin modules requiring stable component supply across long product lifecycles.
Supply support for STM32L475VET6 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 analog/mixed-signal ICs for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, with design focus on battery longevity, rich analog integration, and seamless connectivity for IoT edge devices.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating?
The STM32L475VET6 operates at up to 80 MHz with an Adaptive Real-time Accelerator (ART) enabled, achieving 100 DMIPS. This is measured using the Dhrystone 2.1 benchmark at full speed with cache and prefetch disabled, confirming deterministic execution for real-time control tasks without software overhead penalties.
Does this MCU support hardware encryption acceleration?
Yes - the STM32L475VET6 includes a dedicated AES-128/192/256 hardware accelerator with DMA support, plus a true random number generator (RNG) compliant with ISO/IEC 19790. These blocks enable secure boot, encrypted firmware updates, and TLS 1.2 handshake offload without consuming CPU cycles or exposing keys in software memory.
How many I/O pins are available in the LQFP100 package, and what is their voltage tolerance?
The LQFP100 package provides up to 82 general-purpose I/O pins. Of these, the majority (excluding analog-only pins and specific power/ground pins) are 5 V-tolerant, allowing direct interfacing with legacy 5 V peripherals such as UART transceivers, SPI sensors, and GPIO expanders without level-shifting circuitry.
What low-power modes support RTC operation and how much current do they draw?
The STM32L475VET6 supports RTC operation in Standby mode (420 nA) and Stop 2 mode (420 nA). Both retain the RTC calendar, alarms, and 32×32-bit backup registers while disabling the CPU and most peripherals. Current values are measured at 3.0 V and 25 °C per DS10969 Rev 5 Table 35 and Table 38, with typical variation ±15% over temperature.
STM32L475VET6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-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, PWM, WDT
- Number of I/O:
- 82
- 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:
STM32L475VET6 FAQ
1.How can I place an order for STM32L475VET6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L475VET6 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 STM32L475VET6 reliable?
The price and inventory of STM32L475VET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L475VET6 is usually 5 days.
3.What payment methods are accepted for STM32L475VET6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L475VET6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L475VET6?
STM32L475VET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L475VET6 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 STM32L475VET6?
For technical support, including STM32L475VET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L475VET6 requirements.
6.How does Aetrix verify that STM32L475VET6 is sourced from the original manufacturer or authorized distributors?
All STM32L475VET6 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 STM32L475VET6 meets industry standards.
7.What is the process for return or replacement of STM32L475VET6?
All STM32L475VET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L475VET6, 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 STM32L475VET6 part is unused and in its original packaging.
Return procedure for STM32L475VET6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L475VET6 Tags
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