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STMicroelectronics STM32L475VCT6
- Part No.:
- STM32L475VCT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L475VCT6.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:565
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Product details
Overview
STM32L475VCT6 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, dual SAI audio interfaces, and integrated analog peripherals including three 12-bit ADCs (5 Msps), two 12-bit DACs, two op-amps, and two ultra-low-power comparators - deployed in battery-powered industrial sensors and portable medical monitors.
For engineers reviewing the STM32L475VCT6 datasheet, STM32L475VCT6 pinout, STM32L475VCT6 application, or STM32L475VCT6 equivalent, key selection criteria include its FlexPowerControl architecture (420 nA Stop 2 mode, 1.4 µA Stop 2 with RTC), ART Accelerator™ enabling zero-wait-state Flash execution, and dual-bank read-while-write Flash for robust firmware updates in field-deployed edge nodes.
Technical Context
The STM32L475VCT6 integrates an Arm Cortex-M4 core with FPU and MPU, supported by the Adaptive Real-time Accelerator (ART Accelerator™) that eliminates Flash wait states at 80 MHz. Its power architecture includes three low-power modes (Stop 0/1/2), VBAT backup domain (300 nA), and hardware batch acquisition mode (BAM) for sensor data aggregation without CPU wake-up.
Clock system comprises four independent sources: HSE (4–48 MHz), LSE (32.768 kHz), HSI16 (16 MHz ±1%), and MSI (100 kHz–48 MHz auto-trimmed by LSE), feeding three PLLs for system, USB, and audio domains - enabling precise timing control for synchronous audio streaming via SAI and deterministic real-time response in motor control loops using advanced timers TIM1/TIM8.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP filtering and floating-point sensor fusion without external coprocessor |
| Memory | 1 MB dual-bank Flash (read-while-write), 128 KB SRAM (32 KB with parity) - supports safe over-the-air updates and ECC-protected critical variables |
| Low-Power Performance | 420 nA Stop 2 mode, 1.4 µA Stop 2 + RTC - extends coin-cell battery life to >10 years in periodic wake-up sensing applications |
| 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 battery voltage monitoring in single-chip designs |
| Audio Interface | 2× SAI (Serial Audio Interface) supporting I²S, PCM, AC97 - allows simultaneous stereo input/output for voice-enabled IoT gateways |
| Communication | USB OTG FS, CAN 2.0B, 5× USART, LPUART, 3× SPI, Quad-SPI, SDMMC - provides wired connectivity for firmware download, field diagnostics, and memory expansion |
| Timers | 16× timers including 2× advanced-control (TIM1/TIM8), 2× low-power (LPTIM1/LPTIM2 active in Stop mode) - delivers precise PWM generation and sub-millisecond wake-up timing for time-triggered control |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 pins, ECOPACK2® compliant, rated for -40 °C to +105 °C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Main, analog, and I/O supply rails | Independent 1.71–3.6 V domains enable noise-isolated analog measurements and 5 V-tolerant I/Os (up to 114 pins) |
| VSS, VSSA | Digital and analog ground returns | Separate analog/digital ground planes reduce coupling noise in mixed-signal operation |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os with multiple AFs | Up to 114 pins support 16 alternate functions (AF0–AF15), including SAI, USB, CAN, and Quad-SPI - enabling flexible board layout and peripheral multiplexing |
| PC13–PC15 | RTC oscillator inputs (LSE) | Dedicated 32.768 kHz crystal interface with built-in load capacitors - eliminates external components for calendar-grade RTC accuracy |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external push-button or supervisor IC assertion |
| BOOT0 | Boot mode selection | High at power-up selects system memory bootloader - enables field recovery via USART without debugger |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Seven low-power modes with sub-µA shutdown (30 nA), enabling energy harvesting and multi-year battery life in wireless sensors |
| ART Accelerator™ | Zero-wait-state execution from Flash at 80 MHz - eliminates performance penalty of embedded Flash vs. SRAM code execution |
| Dual-bank Flash memory | Enables seamless firmware updates: one bank executes while the other receives new image - prevents device bricking during OTA |
| Capacitive touch sensing (TSC) | 21-channel controller supporting touchkey, linear, and rotary sensors - replaces mechanical buttons with IP67-rated sealed front panels |
| DFSDM digital filters | 4× sigma-delta modulator filters with decimation - directly interfaces MEMS microphones and pressure sensors without external ASIC |
| True random number generator (RNG) | FIPS-compliant entropy source for secure key generation in TLS handshakes and device attestation |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Wireless temperature/humidity/pressure node in HVAC ducts with 10-year battery life. IC Role / Device Role / Timing Role: Main controller executing sensor fusion, BLE stack, and ultra-low-power scheduling via LPTIM2 wake-up events. Use Value: 420 nA Stop 2 mode + BAM reduces average current to <1.5 µA, extending CR2032 life beyond 120 months. | Use Scenario: Handheld ECG and SpO₂ monitor with audio feedback and USB-C charging. IC Role / Device Role / Timing Role: Central processor handling analog front-end (ADC/DAC/op-amp), SAI-driven speaker output, and USB OTG host for firmware update. Use Value: Integrated 2× SAI and 3× ADC eliminate external audio codec, reducing BOM cost by $1.80 and PCB area by 22 mm². |
| Smart Meter Data Logger | Automated Test Equipment (ATE) Front-End |
Use Scenario: Tamper-resistant electricity meter logging voltage/current harmonics every 10 seconds. IC Role / Device Role / Timing Role: High-precision measurement engine using 3× synchronized ADCs, DFSDM for anti-aliasing, and RTC-calibrated timestamping. Use Value: Hardware oversampling (up to 16-bit effective resolution) and CRC-protected Flash ensure metrology-grade data integrity per IEC 62053. | Use Scenario: Modular ATE slot card acquiring analog waveforms at 5 Msps with trigger synchronization. IC Role / Device Role / Timing Role: Real-time waveform capture controller using DMA-linked ADC buffers and LPUART for remote command parsing. Use Value: 5 Msps ADC throughput with 200 µA/Msps efficiency enables continuous 100 ms capture windows within 1 W thermal envelope. |
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 | 512 KB Flash, no SAI, no USB OTG, 64-pin LQFP - lacks audio and high-speed connectivity | Suitable for simpler sensor hubs without audio or host USB requirements | Select when BOM cost reduction is prioritized over audio/USB features and Flash headroom is sufficient |
| STM32L552VET6 | ARM TrustZone®, 256 KB SRAM, 512 KB Flash, 1.27 µA Stop 2 - adds security but reduces Flash and analog resources | Required for PSA Level 3 certified devices needing secure boot and encrypted firmware storage | Choose only when hardware root-of-trust and secure firmware update are mandatory design requirements |
Compared with STM32L433RCT6, the STM32L475VCT6 provides double Flash, dual SAI, and USB OTG for richer connectivity; versus STM32L552VET6, it trades TrustZone security for larger Flash, more ADC channels, and full audio capability - making it optimal for cost-sensitive, feature-rich edge nodes where security is software-managed.
Availability
STM32L475VCT6 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart meter data loggers, and automated test equipment front-ends requiring stable component supply across multi-year production cycles.
Supply support for STM32L475VCT6 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 chips for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich analog integration, and real-time performance - optimized for IoT edge nodes, wearable health devices, and energy-efficient industrial controls.
FAQ
What is the maximum operating frequency and corresponding performance metric?
The STM32L475VCT6 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 with zero wait states thanks to the ART Accelerator™, which caches Flash accesses - enabling deterministic real-time response in motor control and audio processing tasks without SRAM code relocation.
Does this MCU support hardware encryption or secure boot features?
The STM32L475VCT6 does not include ARM TrustZone® or dedicated cryptographic accelerators. It provides a true random number generator (RNG) and 96-bit unique ID for software-based key derivation, but lacks hardware AES engines or secure boot ROM. For applications requiring PSA Certified security, ST recommends the STM32L5 series instead - the L475 relies on external secure elements or software libraries for TLS and firmware signing.
How many analog-to-digital converters are integrated, and what are their key specifications?
The STM32L475VCT6 integrates three independent 12-bit ADCs, each capable of 5 Msps sampling rate. They support hardware oversampling up to 16-bit effective resolution, concurrent sampling across all three units, and injection mode for priority conversions. Each ADC includes internal voltage reference (VREFINT), temperature sensor, and VBAT monitoring - enabling self-calibrating battery-powered measurement systems without external references.
What development tools and debug interfaces are supported?
The STM32L475VCT6 supports Serial Wire Debug (SWD) and JTAG via its SWJ-DP interface, compatible with ST-LINK/V2-1, SEGGER J-Link, and CMSIS-DAP debug probes. It includes Embedded Trace Macrocell™ (ETM) for instruction trace and supports STM32CubeIDE, Keil MDK, and IAR EWARM. No external debug header is required - SWD signals are accessible on standard pinout (SWCLK, SWDIO, NRST).
STM32L475VCT6 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:
- 256KB (256K 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:
STM32L475VCT6 FAQ
1.How can I place an order for STM32L475VCT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L475VCT6 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 STM32L475VCT6 reliable?
The price and inventory of STM32L475VCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L475VCT6 is usually 5 days.
3.What payment methods are accepted for STM32L475VCT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L475VCT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L475VCT6?
STM32L475VCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L475VCT6 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 STM32L475VCT6?
For technical support, including STM32L475VCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L475VCT6 requirements.
6.How does Aetrix verify that STM32L475VCT6 is sourced from the original manufacturer or authorized distributors?
All STM32L475VCT6 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 STM32L475VCT6 meets industry standards.
7.What is the process for return or replacement of STM32L475VCT6?
All STM32L475VCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L475VCT6, 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 STM32L475VCT6 part is unused and in its original packaging.
Return procedure for STM32L475VCT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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