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Home Products Integrated Circuits (ICs)Embedded - Microcontrollers~~STM32L475VET6TR~~

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STM32L475VET6TR - STMicroelectronics

Manufacturer Part Number: STM32L475VET6TR

Manufacturer: STMicroelectronics

Allelco Part Number: 98D-STM32L475VET6TR

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 43,475 pcs available, New & Original

Parts Description: CONTROLLER / PROCESSOR

Package: 100-LQFP (14x14)

Data sheet: STM32L475VET6TR.pdf

PCN Design/Specification
Mult Dev Material Chgs 28/Feb/2023.pdf

RoHs Status: ROHS3 Compliant

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Specifications

STM32L475VET6TR Tech Specifications
STMicroelectronics - STM32L475VET6TR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - STM32L475VET6TR

Product Attribute	Attribute Value
Manufacturer	STMicroelectronics
Voltage - Supply (Vcc/Vdd)	1.71V ~ 3.6V
Supplier Device Package	100-LQFP (14x14)
Speed	80MHz
Series	STM32L4
RAM Size	128K x 8
Program Memory Type	FLASH
Program Memory Size	512KB (512K x 8)
Peripherals	Brown-out Detect/Reset, DMA, PWM, WDT
Package / Case	100-LQFP

Product Attribute	Attribute Value
Package	Tape & Reel (TR)
Oscillator Type	Internal
Operating Temperature	-40°C ~ 85°C (TA)
Number of I/O	82
Mounting Type	Surface Mount
EEPROM Size	-
Data Converters	A/D 16x12b; D/A 2x12b
Core Size	32-Bit
Core Processor	ARM® Cortex®-M4
Connectivity	CANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
REACH Status	REACH Unaffected

Frequently Asked Questions(FAQ)

How does the STM32L475VET6TR compare to other STM32L4 series MCUs in terms of power efficiency and performance at 80MHz?: The STM32L475VET6TR achieves 80MHz operation with a 32-bit ARM Cortex-M4 core, offering high computational throughput while maintaining ultra-low-power characteristics typical of the STM32L4 family. It supports dynamic voltage scaling across its 1.71V to 3.6V supply range, enabling designers to balance performance and energy consumption. Compared to lower-end L4 variants like the STM32L433, which typically run at 40–80MHz with less RAM and no USB OTG, this device provides significantly more program memory (512KB vs. 256KB) and enhanced peripherals. However, higher-performance L4 devices such as the STM32L496 offer similar clock speeds but with larger memory and advanced features like an LCD controller, making the L475 a balanced choice for mid-range applications requiring both processing power and low-power operation.

What are the key considerations when selecting between internal oscillator configurations for the STM32L475VET6TR in battery-powered applications?: The STM32L475VET6TR relies on an internal oscillator, eliminating the need for external crystals and reducing BOM cost and board space. For most applications, the internal 16MHz HSI (High-Speed Internal) oscillator can be calibrated to within ±1% accuracy, sufficient for USB and communication protocols. In ultra-low-power modes, the MSI (Multi-Speed Internal) oscillator provides multiple frequency ranges down to 32kHz, allowing the system to maintain timing functions while consuming sub-µA current. Designers should account for startup time and frequency drift over temperature (±4%) when using the MSI in deep-sleep states. If precise timing is required (e.g., USB full-speed), an external 4–32MHz crystal paired with the HSE may be preferable despite higher power and complexity.

Can the STM32L475VET6TR be used in industrial environments, and what design precautions are necessary?: Yes, the STM32L475VET6TR is rated for industrial temperatures from -40°C to 85°C, making it suitable for harsh environments. Its 128KB RAM and 512KB Flash provide ample resources for robust firmware handling even under thermal stress. To ensure reliability, designers should implement proper decoupling (100nF ceramic capacitors near each VDD pin), use controlled impedance traces for high-speed signals like USB and QSPI, and avoid placing sensitive analog lines near noisy digital peripherals. Additionally, brownout reset and watchdog timer features help recover from power anomalies common in industrial settings. The device’s MSL 3 rating also allows up to 168 hours of exposure before assembly, supporting standard PCB production workflows.

How many I/O pins does the STM32L475VET6TR support, and what are typical usage constraints?: The STM32L475VET6TR provides 82 configurable I/O pins in its 100-LQFP package, offering substantial flexibility for complex embedded systems. These include GPIOs usable across all voltage domains (from 1.71V to 3.6V), with some pins supporting alternate functions like UART, SPI, or SAI. However, certain critical pins—such as those connected to the internal voltage regulators, NRST, and BOOT0—are reserved for system control and cannot be reassigned. Additionally, analog inputs for the 16x12-bit ADC share pin assignments with digital functions, so software configuration must manage multiplexing carefully. Power integrity across the I/O domain requires attention, especially when driving loads above 8mA per pin, necessitating external buffering or level shifting if interfacing with higher-voltage devices.

What is the maximum data rate supported by the STM32L475VET6TR’s USB OTG interface?: The STM32L475VET6TR includes a full-speed USB OTG controller compliant with USB 2.0 specifications, enabling data transfer rates up to 12 Mbps. This supports standard peripheral roles such as virtual COM ports, mass storage devices, or host mode operation for connecting USB sensors or flash drives. Full-speed USB requires precise 48 MHz clocking, typically derived from the HSE or PLL based on an external crystal. Due to timing sensitivity, PCB layout demands strict adherence to USB D+/D− differential pair routing with impedance matching (~90Ω) and adequate grounding. Software stack implementation using ST’s HAL or LL libraries is recommended to ensure protocol compliance and reduce integration risks.

Does the STM32L475VET6TR support DMA, and how does it improve real-time performance?: Yes, the STM32L475VET6TR integrates a comprehensive Direct Memory Access (DMA) controller with up to 16 channels, allowing peripheral data transfers without CPU intervention. This significantly reduces latency in time-critical tasks such as ADC sampling at 3.6 MSPS (via burst mode), UART reception during high-bandwidth logging, or SPI transfers to external memories. For example, continuous ADC conversion can offload the Cortex-M4 core by transferring results directly to RAM buffers, freeing cycles for algorithm execution. The DMA operates independently across multiple peripherals simultaneously, including I2C, SPI, and SAI, enhancing overall system responsiveness in multitasking environments.

What voltage levels can the STM32L475VET6TR’s I/O pins tolerate, and are they compatible with 5V logic?: The STM32L475VET6TR operates over a supply range of 1.71V to 3.6V, and its I/O pins are designed to be compatible with this domain. Most GPIOs can accept input voltages up to VDD + 0.3V, but sustained exposure above 3.6V may damage the device unless protected externally. While 3.3V logic is standard, interfacing with 5V systems requires careful consideration. Using Schottky diodes or dedicated level-shifter ICs is advisable when connecting 5V signals to inputs; alternatively, the device supports 5V-tolerant I/O on selected pins (e.g., those used for USB D+/D− or SWD), but only under specific conditions documented in the reference manual. Misuse without protection risks permanent hardware failure.

How does the STM32L475VET6TR handle memory mapping and boot configuration?: The STM32L475VET6TR uses a unified memory map where Flash memory starts at address 0x0000_0000 by default, but can be remapped via the SYSCFG register to access system memory (e.g., for factory firmware) or SRAM. Boot configuration is determined by the state of the BOOT0 pin and internal fuses. When BOOT0 is pulled high, the MCU boots from system memory, enabling DFU (Device Firmware Upgrade) via USB. Otherwise, it executes code from main Flash starting at 0x0800_0000. The internal 128KB SRAM is divided into two banks (Bank 1: 0x2000 0000–0x2001 FFFF; Bank 2: 0x2002 0000–0x2003 FFFF), supporting bit-banding for atomic operations. Efficient memory partitioning helps optimize code density and runtime performance, particularly in RTOS-based designs.

What communication interfaces does the STM32L475VET6TR support, and how do they compare for industrial networking?: The STM32L475VET6TR offers a rich set of connectivity options: CANbus, LINbus, I2C, SPI, UART/USART, IrDA, and MMC/SD, providing versatility across automotive, IoT, and automation domains. Among these, CANbus and LINbus are particularly valuable for automotive and industrial networks due to their noise immunity and multi-node support. CAN operates at up to 1 Mbps over twisted pairs, ideal for sensor aggregation in distributed systems. LINbus, a low-cost alternative, supports up to 20 kbps for simpler subsystems. I2C and SPI remain dominant for short-distance peripheral communication, while USART enables flexible serial links. Compared to entry-level MCUs lacking CAN or USB, the L475 facilitates seamless integration into existing industrial ecosystems without requiring gateway components.

Is the STM32L475VET6TR suitable for battery-operated wearables or portable devices?: Yes, the STM32L475VET6TR is well-suited for low-power portable applications. Its STM32L4 architecture includes multiple sleep modes consuming as little as 2.1 µA in standby with RTC running, and 27 µA/MHz in run mode at reduced frequencies. With 128KB SRAM retained in standby and fast wake-up times (<1 µs), it supports intermittent sensing and wireless transmission typical in wearables. The integrated USB OTG enables direct charging or data export, while the ADC and DAC facilitate signal conditioning for bio-sensors. However, designers must minimize active duty cycles and leverage peripheral DMA to reduce CPU load. External LDO selection and PCB layout optimization further enhance battery life beyond datasheet benchmarks.

What development tools and IDEs are recommended for programming the STM32L475VET6TR?: The STM32L475VET6TR is fully supported by STMicroelectronics’ STM32CubeIDE, which integrates GCC-based compilation, debugging via ST-Link, and middleware configuration through STM32CubeMX. Third-party toolchains like Keil MDK and IAR Embedded Workbench also provide optimized compilers and debuggers. STM32CubeMX simplifies pinout and peripheral configuration generation, reducing setup time. For advanced users, OpenOCD and JTAG/SWD probes enable custom debugging flows. Firmware updates via DFU mode simplify deployment in field-programmable devices. Consistent toolchain use ensures compatibility with HAL/LL libraries and minimizes integration errors during prototyping and production.

How does the STM32L475VET6TR’s operating temperature range affect long-term reliability?: Operating from -40°C to 85°C ensures the STM32L475VET6TR meets industrial-grade reliability standards. At extreme temperatures, semiconductor parameters shift—such as leakage current increasing at high temperatures—which can impact power budget in battery designs. Flash endurance remains rated for 10k write cycles across the full temperature range, but frequent flash writes should be avoided in mission-critical applications. Thermal cycling tests show robust performance when following JEDEC guidelines, but mechanical stress from PCB warpage during reflow must be mitigated. Proper thermal vias under the LQFP package aid heat dissipation, though the device is not designed for conduction-cooled environments.

Can the STM32L475VET6TR drive LCD displays directly, and what limitations apply?: No, the STM32L475VET6TR does not include an integrated LCD controller, unlike higher-end L4 models such as the STM32L496. Therefore, it cannot directly drive segment or dot-matrix LCDs without external drivers or companion ICs. Users requiring display functionality must implement character or graphic OLEDs via SPI/I2C, or use external LCD driver chips like those from TI or NXP. Alternatively, capacitive touch controllers or resistive touch panels can be driven using GPIOs and external ADCs. This absence increases BOM count but reduces die size and power consumption, making the L475 a leaner option for non-display-intensive applications.

What is the significance of the STM32L475VET6TR’s QSPI interface, and when should it be used?: The Quad-SPI (QSPI) interface on the STM32L475VET6TR supports data rates up to 108 Mbps in octal mode, enabling fast access to external parallel NOR Flash or PSRAM. This is especially useful for executing code directly from external memory, reducing internal Flash wear and enabling larger application spaces than 512KB. QSPI operates in memory-mapped mode, allowing the Cortex-M4 to treat external devices as linear address ranges without explicit read commands. Compared to standard SPI, QSPI quadruples throughput by using four data lines (DQ0–DQ3), making it ideal for graphics-intensive or data-logging applications where bandwidth exceeds what internal resources can sustain.

How does the STM32L475VET6TR implement security features, and what protections does it offer against unauthorized access?: The STM32L475VET6TR includes hardware-based security through its ARM Cortex-M4 TrustZone framework and ST-specific protections like Read Out Protection (RDP) and PCROP (Program Code Read-Out Protection). RDP Level 1 prevents code extraction via debug interfaces, while Level 2 irrevocably disables debugging and erases keys. PCROP allows selective locking of memory regions to protect intellectual property. Secure boot is supported when combined with external tamper detection or secure elements. Although not as advanced as the STM32L4+ series with AES-256 and PUF, these features provide sufficient protection for commercial IoT devices against casual reverse engineering, provided proper key management and firmware update procedures are followed.

What is the recommended PCB footprint and thermal management strategy for the STM32L475VET6TR?: The STM32L475VET6TR uses a standard 100-pin LQFP package measuring 14×14 mm with 0.5mm pitch. Its recommended PCB footprint includes matched pad sizes, solder mask defined lands, and thermal pads beneath the die for heat dissipation. To manage junction temperature during peak loads (e.g., USB enumeration or ADC burst conversions), designers should place vias under the package connected to inner ground planes. Copper pours on top and bottom layers enhance convective cooling. Avoid placing high-current traces near analog sections to prevent crosstalk. Following ST’s reference schematic guidelines ensures signal integrity and manufacturability, especially in high-volume production.

How does the STM32L475VET6TR’s voltage regulation system work, and what external components are needed?: The STM32L475VET6TR features an internal voltage regulator that divides power into three domains: VDDCORE (for the CPU and buses), VDDA (for analog peripherals), and VDD (for I/O and peripherals). In normal operation, the regulator maintains stable core voltage regardless of supply fluctuations within 1.71V–3.6V. External bypass capacitors (typically 1µF tantalum + 100nF ceramic per VDD/VREF+) stabilize the input, while VDDA requires additional filtering for ADC accuracy. The regulator enters bypass mode in low-power states, drawing minimal current. Designers must follow ST’s layout recommendations to avoid noise coupling, particularly between digital switching currents and analog reference paths.

What are the differences between the STM32L475VET6TR and the STM32L476RET6 in terms of package and pinout?: Both the STM32L475VET6TR and STM32L476RET6 share the same 100-LQFP (14x14) package and identical pinouts, enabling drop-in replacement in most designs. However, key distinctions exist: the L476RET6 includes an additional 256KB of Flash (total 768KB) and 32KB of SRAM (total 160KB), along with an integrated LCD controller and Chrom-ART™ Accelerator for GUI performance. The L475VET6TR has 512KB Flash and 128KB SRAM, making it suitable for cost-sensitive applications without display requirements. Both support the same 80MHz Cortex-M4 core, USB OTG, and peripheral sets, so migration between them depends primarily on memory needs rather than architectural changes.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics STM32L475VET6TR

Product Attribute
Part Number	STM32L475VET6	STM32L475RGT6TR	STM32L475VGT6	STM32L475RGT7TR
Manufacturer	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Oscillator Type	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Program Memory Type	-	-	-	-
RAM Size	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
EEPROM Size	-	-	-	-
Core Size	-	-	-	-
Series	-	-	-	-
Program Memory Size	-	-	-	-
Peripherals	-	-	-	-
Number of I/O	-	-	-	-
Data Converters	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Core Processor	-	-	-	-
Voltage - Supply (Vcc/Vdd)	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Connectivity	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Speed	-	-	-	-

STM32L475VET6TR Datasheet PDF

Download STM32L475VET6TR pdf datasheets and STMicroelectronics documentation for STM32L475VET6TR - STMicroelectronics.

PCN Design/Specification: Mult Dev Material Chgs 28/Feb/2023.pdf

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Customer Reviews

Evaluation: 10 Articles

Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.
Daic***K.

Mar 23, 2026

Very good. No issue after long time testing.

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