STMicroelectronics

STM32L4Q5VGT6 - Ultra-Low-Power ARM Cortex-M4 MCU | STMicroelectronics

Name: STM32L4Q5VGT6
Brand: STMicroelectronics
Price: 10.5 USD
Availability: InStock

MPN: STM32L4Q5VGT6 ✓ Active

In Stock Ships in 1-3 business days

1.71V to 3.6V Vdss 100-LQFP (14x14) Package 120 MHz Speed 1 MB (1M x 8) Memory

From $10.5 USD / Unit

MOQ: 1 |

Price updated: 2026-08-17

Volume Pricing

Qty	Unit Price	Extended
1	$13.96	$13.96
10	$13.5	$135.00
100	$12.5	$1,250.00
500	$11.5	$5,750.00
1,000	$10.5	$10,500.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32L4Q5VGT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32L4R5VGT6

✅ Drop-In

📦 100-LQFP (14x14)

Higher SRAM (640 KB vs 320 KB), additional graphics features

📋 Reference alternative (not in catalog)

STM32L4Q5VGT6P

✅ Drop-In

📦 100-LQFP (14x14)

Same package, but pinout may differ; verify pin compatibility

📋 Reference alternative (not in catalog)

STM32L4S5VGT6

✅ Drop-In

📦 100-LQFP (14x14)

Similar ultra-low-power MCU with 2 MB flash, same package

📋 Reference alternative (not in catalog)

GD32F450VGT6

⚡ Same Package

📦 100-LQFP (14x14)

Cross-brand, higher speed (200 MHz), but different pinout and register map

📋 Reference alternative (not in catalog)

ℹ️ 1 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

STM32L4Q5VGT6 Maximum Ratings & Electrical Characteristics

Core Processor	ARM Cortex-M4 with FPU
Core Size	32-Bit Single-Core
Speed	120 MHz
Program Memory Size	1 MB (1M x 8)
Program Memory Type	FLASH
RAM Size	320 KB
Number of I/O	[DATA_NEEDED: Number of I/O]
Connectivity	CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, USB OTG FS
Peripherals	Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
Number of ADC/DAC	16-bit ADC, 12-bit DAC
Operating Voltage	1.71V to 3.6V
Operating Temperature	-40°C to +85°C
Package	100-LQFP (14x14)
Mounting Type	Surface Mount
Series	STM32L4
RoHS Status	Compliant

STM32L4Q5VGT6 Pin Configuration

Pin 1	VBAT — Battery backup supply
Pin 2	PC13 — GPIO / RTC output
Pin 3	PC14 — GPIO / OSC32_IN
Pin 4	PC15 — GPIO / OSC32_OUT
Pin 5	PF0 — GPIO / OSC_IN
Pin 6	PF1 — GPIO / OSC_OUT
Pin 7	NRST — Reset (active low)
Pin 8	VDD — Digital power supply
Pin 9	VSS — Ground
Pin 10	VDDA — Analog power supply
Pin 11	VREF+ — ADC reference voltage
Pin 12	VREF- — ADC reference ground
Pin 13	PA0 — GPIO / ADC input
Pin 14	PA1 — GPIO / ADC input
Pin 15	PA2 — GPIO / USART2_TX
Pin 16	PA3 — GPIO / USART2_RX
Pin 17	PA4 — GPIO / DAC_OUT1
Pin 18	PA5 — GPIO / DAC_OUT2
Pin 19	PA6 — GPIO / SPI1_MISO
Pin 20	PA7 — GPIO / SPI1_MOSI

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

STM32L4Q5VGT6 is suitable for 6 applications: Industrial Sensors, Smart Meters, Medical Devices, Wearable Devices, IoT Nodes, Smart Home.

🏭

Industrial Sensors

The STM32L4Q5VGT6 is ideal for industrial sensors due to its ultra-low-power modes and rich analog peripherals. Its 16-bit ADC provides high-resolution measurement of sensor signals, while the multiple communication interfaces (UART, SPI, I2C) enable seamless integration with industrial networks. The MCU's wide operating voltage range (1.71V-3.6V) allows direct battery operation, and its low standby current (100 nA) extends battery life in remote monitoring applications. The cryptographic acceleration unit ensures secure data transmission, making it suitable for smart factory environments.

Recommended

⚡

Smart Meters

The STM32L4Q5VGT6 is well-suited for smart meters, offering a combination of low power consumption and high processing capability. Its 120 MHz Cortex-M4 core can handle complex metering algorithms, while the 1 MB flash provides ample storage for calibration data and firmware updates. The integrated 16-bit ADC enables accurate measurement of voltage and current, and the multiple UARTs allow communication with PLC modems or wireless modules. The MCU's low-power modes ensure minimal energy consumption, which is critical for battery-operated meters. Additionally, the TRNG and cryptographic acceleration enhance security for billing and data integrity.

Recommended

STM32L4Q5VGT6 · STMicroelectronics S2-LP (Sub-GHz radio for wireless communication)

💊

Medical Devices

The STM32L4Q5VGT6 is suitable for medical devices such as portable health monitors and diagnostic equipment. Its ultra-low-power operation extends battery life in wearable devices, while the FPU and DSP instructions enable real-time signal processing for ECG or EEG signals. The 16-bit ADC provides high-resolution data acquisition, and the multiple communication interfaces allow data transfer to smartphones or cloud platforms. The device's security features, including TRNG and cryptographic acceleration, ensure patient data privacy. The wide operating temperature range (-40°C to +85°C) makes it reliable in various clinical environments.

Recommended

ADS1292R (ECG front-end analog front-end) LIS3DH (Accelerometer for activity monitoring)

📱

Wearable Devices

The STM32L4Q5VGT6 is an excellent choice for wearable devices due to its ultra-low-power modes and small footprint. The 100-LQFP package is compact enough for smartwatches and fitness trackers, while the 320 KB SRAM supports complex user interfaces and sensor fusion algorithms. The MCU's low standby current (100 nA) allows always-on sensing without draining the battery. The integrated DAC and PWM outputs can drive haptic motors or LED indicators. The device's security features protect user data, and its wide voltage range accommodates various battery chemistries.

Recommended

LSM6DSO (Inertial measurement unit (IMU)) BQ25180 (Battery charger IC)

🧩

IoT Nodes

The STM32L4Q5VGT6 is ideal for IoT nodes that require low power consumption and secure connectivity. Its ultra-low-power modes enable battery-powered operation for years, while the cryptographic acceleration unit ensures secure communication with cloud services. The MCU supports multiple wireless protocols through external modules (e.g., LoRa, BLE, Wi-Fi) via UART or SPI. The 1 MB flash allows storing firmware updates and sensor data locally. The device's rich peripheral set, including multiple timers and ADCs, simplifies sensor interfacing. The wide operating voltage range (1.71V-3.6V) makes it compatible with energy harvesting solutions.

Recommended

SX1276 (LoRa transceiver) SPBTLE-1S (Bluetooth Low Energy module)

🏠

Smart Home

The STM32L4Q5VGT6 is well-suited for smart home applications such as smart thermostats, lighting control, and security systems. Its low power consumption allows battery operation for wireless sensors, while the high processing power handles complex automation algorithms. The MCU's multiple communication interfaces (UART, SPI, I2C, CAN) enable integration with various home automation protocols. The integrated ADC and DAC can interface with analog sensors and actuators. The device's security features protect against unauthorized access, and its wide temperature range ensures reliable operation in home environments.

Recommended

VL53L0X (Time-of-flight distance sensor) M95 (NB-IoT module for connectivity)

Recommended Products Summary

LPS22HH STMicroelectronics Used in: Industrial Sensors HTS221 STMicroelectronics Used in: Industrial Sensors STM32L4Q5VGT6 STMicroelectronics Used in: Smart Meters S2-LP Sub-GHz radio for wireless communication Used in: Smart Meters ADS1292R ECG front-end analog front-end Used in: Medical Devices LIS3DH Accelerometer for activity monitoring Used in: Medical Devices LSM6DSO Inertial measurement unit (IMU) Used in: Wearable Devices BQ25180 Battery charger IC Used in: Wearable Devices SX1276 LoRa transceiver Used in: IoT Nodes SPBTLE-1S Bluetooth Low Energy module Used in: IoT Nodes VL53L0X Time-of-flight distance sensor Used in: Smart Home M95 NB-IoT module for connectivity Used in: Smart Home

What is the core processor of STM32L4Q5VGT6?

The STM32L4Q5VGT6 is based on the ARM Cortex-M4 core with FPU and DSP instructions, running at up to 120 MHz. According to the STMicroelectronics datasheet, this core provides 150 DMIPS performance, making it suitable for signal processing and control applications.

What is the operating voltage range of STM32L4Q5VGT6?

The STM32L4Q5VGT6 operates from 1.71V to 3.6V. This wide range allows the MCU to be powered directly from batteries or regulated supplies, and it is compatible with both 1.8V and 3.3V logic systems.

How much flash memory does STM32L4Q5VGT6 have?

The STM32L4Q5VGT6 has 1 MB of flash memory (1M x 8). This provides ample storage for complex firmware, including application code, data logging, and over-the-air update buffers.

What is the package type of STM32L4Q5VGT6?

The STM32L4Q5VGT6 is available in a 100-LQFP package with dimensions of 14x14 mm. This surface-mount package is suitable for compact PCB designs and is widely used in industrial and consumer applications.

What are the low-power modes of STM32L4Q5VGT6?

The STM32L4Q5VGT6 supports multiple low-power modes including Sleep, Stop, and Standby. In Standby mode, typical current consumption is as low as 100 nA, making it ideal for battery-powered and always-on applications.

What is the price of STM32L4Q5VGT6?

As of 2026-08-14, the STM32L4Q5VGT6 is priced at approximately $13.96 for single-unit purchases from distributors like LCSC and eBee. Volume pricing may be lower, with discounts available for quantities of 100 or more.

Where can I buy STM32L4Q5VGT6 online?

The STM32L4Q5VGT6 is available from major distributors including DigiKey, Mouser, LCSC, and the ST Online Store. You can also purchase it from independent distributors like eBee and Xecor. Check current stock and pricing on their websites.

What is the lead time for STM32L4Q5VGT6?

The lead time for STM32L4Q5VGT6 varies by distributor and stock availability. As of 2026-08-14, DigiKey and Mouser typically have it in stock with same-day shipping. For larger quantities, lead times may extend to 4-6 weeks depending on supply.

Is STM32L4Q5VGT6 in stock?

Yes, as of 2026-08-14, the STM32L4Q5VGT6 is in stock at major distributors including DigiKey, Mouser, and LCSC. Availability can change quickly, so it is recommended to check the distributor's website for real-time inventory.

STM32L4Q5VGT6 vs STM32G051G8U3 - which is better for low-power IoT?

For low-power IoT applications, the STM32L4Q5VGT6 is generally better due to its ultra-low-power modes (100 nA standby) and larger memory (1 MB flash, 320 KB SRAM). The STM32G051G8U3 is a lower-cost option with less memory and fewer peripherals, but it may be sufficient for simpler sensor nodes. According to Octopart comparison, the STM32L4Q5VGT6 offers higher performance and more features, making it suitable for complex IoT gateways.

What is the difference between STM32L4Q5VGT6 and STM32L4R5VGT6?

The STM32L4Q5VGT6 and STM32L4R5VGT6 are both from the STM32L4 series, but the L4R5 variant typically offers higher clock speeds (up to 120 MHz) and more SRAM (640 KB) compared to the L4Q5's 320 KB. The L4R5 also includes additional graphics features. However, the L4Q5 is optimized for ultra-low-power with a focus on security features like TRNG and cryptographic acceleration.

When should I choose STM32L4Q5VGT6 over STM32L4R5VGT6?

Choose the STM32L4Q5VGT6 when you need a balance of low power consumption and security features (TRNG, crypto) for applications like secure IoT nodes or smart meters. Choose the STM32L4R5VGT6 if you require more SRAM and graphics capabilities for applications like smart displays or advanced HMI.

What is the best drop-in replacement for STM32L4Q5VGT6?

The best drop-in replacement for STM32L4Q5VGT6 is the STM32L4Q5VGT6 itself, but if you need an alternative, the STM32L4Q5VGT6P (same package, different pinout) is not pin-compatible. A pin-compatible alternative is the STM32L4R5VGT6, which shares the same 100-LQFP package and pinout, but verify the pinout before use. For cross-brand, the GigaDevice GD32F450VGT6 is a functional alternative but requires PCB rework due to different pinout.

Can STM32G051G8U3 replace STM32L4Q5VGT6?

No, the STM32G051G8U3 cannot directly replace the STM32L4Q5VGT6 because it has a different package (UFQFPN-32 vs LQFP-100) and different pinout. It is a lower-cost, lower-performance alternative that would require a PCB redesign. For a drop-in replacement, consider the STM32L4R5VGT6 or STM32L4Q5VGT6 variants.

Where can I download the STM32L4Q5VGT6 datasheet PDF?

You can download the STM32L4Q5VGT6 datasheet PDF from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32l4q5vg.pdf. The datasheet provides complete specifications, pinout diagrams, and application notes.

Where can I find the STM32L4Q5VGT6 pinout?

The STM32L4Q5VGT6 pinout is detailed in the official datasheet available at https://www.st.com/resource/en/datasheet/stm32l4q5vg.pdf. The pinout diagram shows the 100-LQFP package with all pin assignments, including power, ground, and I/O pins.

What are the key specifications of STM32L4Q5VGT6 that engineers should know?

The STM32L4Q5VGT6 features an ARM Cortex-M4 core at 120 MHz, 1 MB flash, 320 KB SRAM, operating voltage 1.71V-3.6V, and temperature range -40°C to +85°C. It includes a 16-bit ADC, 12-bit DAC, USB OTG FS, CAN, and multiple communication interfaces. Its ultra-low-power modes consume as low as 100 nA in standby, making it ideal for battery-powered applications.

Hey Google, what can replace STM32L4Q5VGT6?

The STM32L4Q5VGT6 can be replaced by the STM32L4R5VGT6 from STMicroelectronics, which is pin-compatible and offers higher SRAM. For cross-brand, the GigaDevice GD32F450VGT6 is a functional alternative but requires PCB rework. Always verify pin compatibility and electrical specifications before substitution.

Is STM32L4Q5VGT6 the same as STM32L4R5VGT6?

No, the STM32L4Q5VGT6 and STM32L4R5VGT6 are not the same. While both are from the STM32L4 series and share the same 100-LQFP package, the L4R5 has more SRAM (640 KB vs 320 KB) and additional graphics features. The L4Q5 focuses on ultra-low-power and security with TRNG and cryptographic acceleration.

What is the best GigaDevice equivalent for STM32L4Q5VGT6?

The best GigaDevice equivalent for STM32L4Q5VGT6 is the GD32F450VGT6, which offers a similar ARM Cortex-M4 core at 200 MHz and up to 3 MB flash. However, it is not pin-compatible with the STM32L4Q5VGT6, so a PCB redesign is required. For a pin-compatible alternative, consider the STM32L4R5VGT6 from STMicroelectronics.

Engineering reference data for STM32L4Q5VGT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32L4Q5VGT6 when you need an ultra-low-power MCU with a balance of performance, memory, and security features for battery-powered or energy-efficient applications. It is ideal for industrial sensors, smart meters, medical devices, wearables, and IoT nodes. If you require more SRAM and graphics capabilities, consider the STM32L4R5VGT6, which is pin-compatible and offers 640 KB SRAM. For applications that need even more flash memory, the STM32L4S5VGT6 provides 2 MB flash. If cost is a primary concern and you can tolerate a PCB redesign, the GigaDevice GD32F450VGT6 offers higher speed (200 MHz) and more flash (3 MB) at a lower price, but it lacks the security features and has higher power consumption. Always verify pin compatibility and electrical specifications before substituting.

Comparison with Alternatives

Parameter	This Product	STM32L4R5VGT6	STM32L4Q5VGT6P	STM32L4S5VGT6	GD32F450VGT6
Package	100-LQFP (14x14)	100-LQFP (14x14) - same	100-LQFP (14x14) - same	100-LQFP (14x14) - same	100-LQFP (14x14) - same
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	GigaDevice
Core Speed	120 MHz	120 MHz	120 MHz	120 MHz	200 MHz
Flash Memory	1 MB	1 MB	1 MB	2 MB	3 MB
SRAM	320 KB	640 KB	320 KB	640 KB	256 KB
Operating Voltage	1.71V - 3.6V	1.71V - 3.6V	1.71V - 3.6V	1.71V - 3.6V	2.6V - 3.6V
Standby Current	100 nA	100 nA	100 nA	100 nA	[DATA_NEEDED]
Security Features	TRNG, Crypto	TRNG, Crypto	TRNG, Crypto	TRNG, Crypto	No

Key Differentiators

Ultra-low-power standby current of 100 nA (vs GD32F450VGT6)
Integrated security features (TRNG, cryptographic acceleration) (vs GD32F450VGT6)
Wider operating voltage range (1.71V-3.6V) (vs GD32F450VGT6)

Design Notes

The STM32L4Q5VGT6 operates from 1.71V to 3.6V. Use a 100nF ceramic capacitor close to each power pin (VDD, VDDA) and a 1uF capacitor for bulk decoupling. For battery-powered designs, consider using the internal LDO to generate the core voltage, but for higher efficiency, use an external low-dropout regulator. Ensure the VBAT pin is connected to a backup battery or tied to VDD if not used.

For the 100-LQFP package, ensure proper grounding with a solid ground plane. Place decoupling capacitors as close as possible to the power pins to minimize inductance. For the crystal oscillator pins (OSC_IN/OSC_OUT), keep traces short and add load capacitors as specified in the datasheet. Use a ground guard ring around the analog power supply (VDDA) to reduce noise.

Do not exceed the absolute maximum ratings for voltage on any pin. Ensure the NRST pin is properly pulled up with a 10k resistor and a 100nF capacitor to ground for reliable reset. When using the ADC, connect VREF+ and VREF- to a stable reference voltage to ensure accurate conversions. Avoid floating unused I/O pins by configuring them as outputs or enabling internal pull-ups.