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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersSTM32L475RGT6TR
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STM32L475RGT6TR - STMicroelectronics

Manufacturer Part Number
STM32L475RGT6TR
Manufacturer
STMicroelectronics
Allelco Part Number
98D-STM32L475RGT6TR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
43,878 pcs available, New & Original
Parts Description
CONTROLLER / PROCESSOR
Package
64-LQFP (10x10)
Data sheet
STM32L475RGT6TR.pdf

PCN Design/Specification

Mult Dev Material Chgs 28/Feb/2023.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 43878
  • Unit Price: $8.032
  • Subtotal: $0.00

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The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

STM32L475RGT6TR Tech Specifications
STMicroelectronics - STM32L475RGT6TR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - STM32L475RGT6TR

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V
Supplier Device Package 64-LQFP (10x10)
Speed 80MHz
Series STM32L4
RAM Size 128K x 8
Program Memory Type FLASH
Program Memory Size 1MB (1M x 8)
Peripherals Brown-out Detect/Reset, DMA, PWM, WDT
Package / Case 64-LQFP
Product Attribute Attribute Value
Package Tape & Reel (TR)
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Number of I/O 51
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, 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 STM32L475RGT6TR compare to other STM32L4 series microcontrollers in terms of power efficiency and performance trade-offs for battery-powered applications?
The STM32L475RGT6TR features a 32-bit ARM Cortex-M4 core clocked at 80MHz, which provides a balance between processing speed and power consumption. Its ultra-low-power design includes multiple low-power modes such as Sleep, Stop, and Standby, with current draw as low as 1 µA in Standby mode when using the internal RTC. When compared to higher-performance variants like the STM32L496RE (which offers up to 120MHz), the L475 trades slightly reduced maximum frequency for optimized power efficiency across its operating voltage range of 1.71V to 3.6V. This makes it well-suited for portable devices requiring moderate computational throughput without excessive energy drain.
What are the key considerations when selecting the STM32L475RGT6TR for USB OTG functionality in embedded systems?
The STM32L475RGT6TR integrates a full-speed USB 2.0 OTG controller, enabling dual-role device support (host or peripheral). Designers must ensure proper power supply stability within the 1.71V–3.6V VDD range and include an external crystal or resonator if precise timing is required for USB communication. Additionally, firmware must implement correct VBUS detection and session request protocol (SRP) or host negotiation protocol (HNP) if operating in dual-role mode. PCB layout attention is critical due to high-speed signal integrity requirements for D+ and D- lines.
Can the STM32L475RGT6TR reliably operate in industrial environments with temperature extremes?
Yes, the STM32L475RGT6TR is rated for operation from -40°C to +85°C (ambient), making it suitable for most industrial applications. This extended temperature range ensures stable performance in harsh environments where thermal cycling may occur. However, system-level design should account for potential derating of analog peripherals like ADCs at elevated temperatures, particularly when sampling accuracy is critical.
How much RAM does the STM32L475RGT6TR provide, and how does this impact real-time application development?
The microcontroller includes 128KB of SRAM organized as 128K x 8 bits. This memory size supports moderate data buffering and stack usage in real-time control loops but may require careful memory management for complex RTOS-based applications with large thread stacks or extensive logging buffers. Compared to larger variants like the STM32L496ZG (with 640KB RAM), the L475’s capacity limits the complexity of concurrent tasks unless external memory is added.
What oscillator options are available on the STM32L475RGT6TR, and what are the implications for system clock accuracy?
The device supports both internal oscillators (HSI at 16MHz ±1%) and external crystals/resonators via the HSE input. For applications requiring precise timing—such as UART baud rate generation or PWM synchronization—an external 8MHz or 16MHz crystal is recommended. Using the internal HSI introduces potential clock drift under varying voltage and temperature conditions, which can affect communication protocols sensitive to timing margins.
Is the STM32L475RGT6TR suitable for motor control applications requiring high-resolution PWM outputs?
While the STM32L475RGT6TR supports PWM generation through its general-purpose timers, its resolution is typically limited to 16-bit per channel. This may be sufficient for many DC motor or stepper driver applications but falls short of the enhanced resolution offered by specialized MCUs with advanced timer blocks. For field-oriented control (FOC) algorithms demanding finer duty-cycle granularity, a dedicated motor-control MCU might offer better precision despite similar core performance.
How does the STM32L475RGT6TR handle electromagnetic compatibility (EMC) in compact PCB designs?
As with all LQFP-packaged ICs, EMC performance depends heavily on system-level layout practices rather than the MCU itself. The 64-LQFP (10x10) package allows dense routing but requires careful decoupling, grounding, and trace shielding near high-speed interfaces like USB, SPI, and QSPI. STMicroelectronics recommends following their reference schematics and layout guidelines closely to mitigate radiated emissions and susceptibility to noise, especially given the mixed-signal nature of peripherals such as ADCs and DACs.
What role does DMA play in optimizing data transfers for the STM32L475RGT6TR?
The STM32L475RGT6TR includes a DMA controller that offloads the CPU from repetitive data movement tasks between memory and peripherals such as SPI, I2C, ADC, and UART. This improves real-time responsiveness and reduces interrupt overhead. In sensor fusion applications or continuous data acquisition scenarios, proper DMA configuration can prevent buffer overflows and maintain consistent sample rates even during background computation.
Can the STM32L475RGT6TR be used in safety-critical systems requiring memory protection?
The Cortex-M4 core in the STM32L475RGT6TR supports Memory Protection Unit (MPU) functionality, allowing segmentation of code, data, and peripheral regions. This enables runtime access control and fault isolation, which enhances robustness in fault-tolerant designs. However, achieving functional safety certification (e.g., ISO 26262) would require additional architectural measures beyond MPU use alone, including watchdog timers, error-correcting code (ECC) memory, and rigorous software validation.
How does the integrated ADC perform in noisy environments typical of automotive edge nodes?
The STM32L475RGT6TR contains a 16-channel, 12-bit successive approximation ADC with configurable sampling time and resolution settings. While capable of 1 MSPS conversion rate, noise immunity depends significantly on external filtering and PCB grounding strategies. In noisy automotive environments, oversampling combined with digital filtering can improve effective resolution, though dedicated isolated ADCs may still be preferable for galvanically sensitive measurements.
What programming and debugging interfaces are supported by the STM32L475RGT6TR?
The device supports standard SWD (Serial Wire Debug) and JTAG interfaces for firmware development and debugging. These allow in-circuit programming via tools like ST-Link or third-party debug probes. Boot modes also enable serial bootloader execution over USART or USB, facilitating field updates without additional hardware programmers.
Does the STM32L475RGT6TR comply with relevant environmental regulations for global deployment?
Yes, the STM32L475RGT6TR is RoHS3 compliant and unaffected by REACH restrictions, ensuring adherence to EU and international environmental standards. It carries an MSL3 rating (168-hour floor life), indicating moderate moisture sensitivity that must be managed during reflow soldering per IPC/JEDEC J-STD-020 guidelines.
What are the limitations of the internal voltage regulator when driving multiple high-current peripherals?
Although not explicitly detailed in the base specifications, the STM32L475RGT6TR relies on an internal voltage regulator for core logic supply (VDDCORE). Under heavy load conditions with simultaneous activation of multiple high-speed peripherals (e.g., USB, QSPI flash), transient currents may cause brief voltage dips if bypass capacitance is insufficient. Designers should follow ST’s power distribution recommendations to minimize IR drops and maintain stable core operation.
How does the presence of CAN bus support benefit industrial automation projects using the STM32L475RGT6TR?
The integrated CAN interface enables robust communication over Controller Area Network (CAN) buses, commonly used in factory automation and process control systems. With built-in message filtering and dual-edge sampling, the CAN block reduces CPU overhead while ensuring deterministic message delivery. This eliminates the need for external transceivers in non-isolated applications, simplifying board design and cost.
What is the significance of the 1MB Flash memory size for firmware development workflows?
The 1MB (1M x 8) embedded Flash provides ample space for complex firmware stacks including RTOS kernels, middleware libraries, and application logic. This capacity supports over-the-air (OTA) update capabilities and modular code architecture without requiring external program memory. However, Flash write endurance (~10k cycles) necessitates wear leveling strategies when storing frequently updated data.
How does the STM32L475RGT6TR compare to ARM Cortex-M33-based alternatives in terms of security features?
Unlike some newer STM32G5 or STM32U5 series parts featuring TrustZone technology, the STM32L475RGT6TR lacks hardware-based secure enclave or cryptographic accelerators beyond basic AES/SHA engines. While it supports secure boot via option bytes, its security model relies more on software isolation and MPU enforcement. For applications demanding root-of-trust or tamper resistance, a Cortex-M33 variant with PSA-certified firmware may offer superior protection.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics STM32L475RGT6TR

Product Attribute STM32L475RGT7TR STM32L475RGT6 STM32L475VET6TR STM32L475VGT6
Part Number STM32L475RGT7TR STM32L475RGT6 STM32L475VET6TR STM32L475VGT6
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Connectivity - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Program Memory Type - - - -
Number of I/O - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Oscillator Type - - - -
Core Size - - - -
Voltage - Supply (Vcc/Vdd) - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Speed - - - -
Program Memory Size - - - -
Series - - - -
Peripherals - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
EEPROM Size - - - -
RAM Size - - - -
Data Converters - - - -
Core Processor - - - -

STM32L475RGT6TR Datasheet PDF

Download STM32L475RGT6TR pdf datasheets and STMicroelectronics documentation for STM32L475RGT6TR - STMicroelectronics.

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

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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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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STMicroelectronics

STM32L475RGT6TR

STMicroelectronics
98D-STM32L475RGT6TR

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