STMicroelectronics

STM32L4S5VIT6 - Ultra-Low-Power ARM Cortex-M4F MCU | STMicroelectronics

Name: STM32L4S5VIT6
Brand: STMicroelectronics
Price: 12.50 USD
Availability: InStock

MPN: STM32L4S5VIT6 ✓ Active

In Stock (99,999) Ships in 1-3 business days

1.71 V to 3.6 V Vdss 100 nA (with backup domain) Id LQFP100 (14x14 mm, 0.5 mm pitch) Package 120 MHz Speed 2 MB Memory

$12.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$12.5	$12.50
10	$11.25	$112.50
100	$10	$1,000.00
500	$9	$4,500.00
1,000	$8.1	$8,100.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32L4S5VIT6 — 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:

STM32L4S5VIT6TR

✅ Drop-In

📦 LQFP100

Same device, tape-and-reel packaging

📋 Reference alternative (not in catalog)

STM32L4S5VIT6Q

✅ Drop-In

📦 LQFP100

Different temperature grade (likely -40°C to +125°C)

📋 Reference alternative (not in catalog)

STM32L4S5VIT6

✅ Drop-In

STMicroelectronics

📦 LQFP100

ARM Cortex-M4 with FPU · 120 MHz · 2 MB · 640 KB · 1.71 V to 3.6 V · -40°C to +85°C · LQFP100 (14x14 mm, 0.5 mm pitch) · 82

✓ 99,999 In Stock

$8.1 / Unit

View Datasheet →

STM32L4S5VIT6P

✅ Drop-In

📦 LQFP100

Same package, possibly different feature set (verify)

📋 Reference alternative (not in catalog)

STM32L4S5VIT6R

✅ Drop-In

📦 LQFP100

Same package, possibly different feature set (verify)

📋 Reference alternative (not in catalog)

STM32L4S5VIT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M4 with FPU
Maximum Frequency	120 MHz
Flash Memory	2 MB
SRAM	640 KB
Supply Voltage Range	1.71 V to 3.6 V
Operating Temperature Range	-40°C to +85°C
Package	LQFP100 (14x14 mm, 0.5 mm pitch)
GPIO Pins	82
ADC	2x 12-bit, 5 Msps
DAC	2x 12-bit
Timers	Multiple 16-bit and 32-bit timers
Communication Interfaces	USART, SPI, I2C, CAN, USB OTG
Standby Current	100 nA (with backup domain)
Stop Mode Current	3.4 µA (with RTC)
RoHS Status	Compliant

STM32L4S5VIT6 Pin Configuration

Pin 1	VDD — Digital power supply
Pin 2	VSS — Digital ground
Pin 3	PA0 — GPIO/ADC input
Pin 4	PA1 — GPIO/ADC input
Pin 5	PA2 — GPIO/USART2_TX
Pin 6	PA3 — GPIO/USART2_RX
Pin 7	PA4 — GPIO/SPI1_NSS
Pin 8	PA5 — GPIO/SPI1_SCK
Pin 9	PA6 — GPIO/SPI1_MISO
Pin 10	PA7 — GPIO/SPI1_MOSI
Pin 11	VDD — Digital power supply
Pin 12	VSS — Digital ground
Pin 13	PB0 — GPIO/ADC input
Pin 14	PB1 — GPIO/ADC input
Pin 15	PB2 — GPIO/BOOT1
Pin 16	PB3 — GPIO/JTDO
Pin 17	PB4 — GPIO/NJTRST
Pin 18	PB5 — GPIO/I2C1_SMBA
Pin 19	PB6 — GPIO/I2C1_SCL
Pin 20	PB7 — GPIO/I2C1_SDA

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

STM32L4S5VIT6 is suitable for 6 applications: Industrial Sensors, Wearable Devices, Smart Meters, Medical Monitoring Equipment, IoT Edge Nodes, Audio Processing.

🏭

Industrial Sensors

The STM32L4S5VIT6 is ideal for industrial sensors that require high accuracy and low power. Its 12-bit ADCs (up to 5 Msps) enable precise analog signal acquisition, while the 120 MHz Cortex-M4 core handles sensor fusion algorithms. The ultra-low-power modes allow the sensor to run on battery for years, making it suitable for wireless industrial monitoring. In a typical setup, the MCU reads sensor data, processes it, and transmits via a low-power radio, spending most time in stop mode to conserve energy. The large flash memory (2 MB) stores calibration data and firmware updates, and the multiple communication interfaces (SPI, I2C, UART) connect to various sensor modules.

Recommended

HTS221 (Humidity and temperature sensor) LPS22HH (Pressure sensor)

📱

Wearable Devices

For wearable devices, the STM32L4S5VIT6 offers a perfect balance of performance and power efficiency. Its 100 nA standby current and 3.4 µA stop mode with RTC enable long battery life, essential for fitness trackers and smartwatches. The MCU can handle real-time health monitoring, including heart rate and activity tracking, using its DSP instructions and FPU. The integrated USB OTG allows direct connection to a host for charging and data transfer. The small LQFP100 package fits into compact PCB designs, and the wide supply voltage range (1.71V to 3.6V) accommodates various battery chemistries. Designers can leverage the low-power UART and timer to wake the system periodically for sensor sampling, minimizing energy consumption.

Recommended

LSM6DSO (Inertial measurement unit) BQ25120A (Battery charger)

⚡

Smart Meters

The STM32L4S5VIT6 is well-suited for smart meters, where accurate measurement and low power are critical. Its multiple 12-bit ADCs can sample voltage and current with high precision, and the 120 MHz core runs metrology algorithms efficiently. The device supports various communication protocols (e.g., PLC, RF) through its USART, SPI, and CAN interfaces. The large flash memory stores tariff tables and historical data, while the RTC maintains timekeeping. In a typical smart meter, the MCU wakes periodically to measure consumption, updates the display, and communicates with the utility network, then returns to low-power mode. The wide operating temperature range (-40°C to +85°C) ensures reliable operation in outdoor environments.

Recommended

STPM32 (Energy metering IC) S2-LP (Sub-GHz radio transceiver)

💊

Medical Monitoring Equipment

In medical monitoring, the STM32L4S5VIT6 provides the processing power and low-power operation needed for portable devices like glucose monitors and pulse oximeters. Its high-resolution ADCs capture biosignals accurately, and the FPU accelerates signal processing algorithms. The device's security features, including a TRNG and cryptographic acceleration, help protect patient data. The ultra-low-power modes extend battery life, crucial for continuous monitoring. The MCU can interface with various sensors via I2C or SPI, and the USB OTG enables data transfer to a PC or smartphone. The LQFP100 package is suitable for compact medical devices, and the wide temperature range ensures reliable operation in clinical environments.

Recommended

MAX30102 (Pulse oximeter sensor) ADS1292R (ECG front-end)

🧩

IoT Edge Nodes

The STM32L4S5VIT6 is an excellent choice for IoT edge nodes that require local processing and low power. Its 120 MHz Cortex-M4 core can run machine learning models for anomaly detection, reducing the need for cloud communication. The device supports multiple wireless protocols via external modules (e.g., LoRa, BLE) through its USART or SPI interfaces. The ultra-low-power modes allow the node to run on batteries for years, making it suitable for remote environmental monitoring. The large flash memory stores firmware updates and sensor data, and the security features ensure secure communication. In a typical deployment, the MCU collects sensor data, processes it locally, and transmits only relevant information to the cloud, saving bandwidth and power.

Recommended

SX1276 (LoRa transceiver) SPBTLE-RF (Bluetooth Low Energy module)

🎧

Audio Processing

The STM32L4S5VIT6 can handle audio processing tasks such as voice recognition and audio playback. Its 120 MHz Cortex-M4 core with FPU and DSP instructions enables real-time audio filtering and encoding. The device includes multiple I2S interfaces for connecting audio codecs, and the DAC can output analog audio directly. The low-power modes are beneficial for battery-powered audio devices like voice assistants and hearing aids. The large flash memory can store audio samples or voice prompts. In a typical application, the MCU captures audio via a microphone, processes it (e.g., noise reduction), and outputs through a speaker or transmits via Bluetooth. The high-speed USB OTG allows audio streaming to a host.

Recommended

CS42L51 (Audio codec) TAS2505 (Audio amplifier)

Recommended Products Summary

HTS221 Humidity and temperature sensor Used in: Industrial Sensors LPS22HH Pressure sensor Used in: Industrial Sensors LSM6DSO Inertial measurement unit Used in: Wearable Devices BQ25120A Battery charger Used in: Wearable Devices STPM32 Energy metering IC Used in: Smart Meters S2-LP Sub-GHz radio transceiver Used in: Smart Meters MAX30102 Pulse oximeter sensor Used in: Medical Monitoring Equipment ADS1292R ECG front-end Used in: Medical Monitoring Equipment SX1276 LoRa transceiver Used in: IoT Edge Nodes SPBTLE-RF Bluetooth Low Energy module Used in: IoT Edge Nodes CS42L51 Audio codec Used in: Audio Processing TAS2505 Audio amplifier Used in: Audio Processing

What is the maximum clock frequency of STM32L4S5VIT6?

The STM32L4S5VIT6 operates at a maximum clock frequency of 120 MHz. According to the STM32L4S5VI datasheet, this is achieved with the ARM Cortex-M4 core with FPU, delivering 150 DMIPS performance.

How much flash memory does STM32L4S5VIT6 have?

The STM32L4S5VIT6 has 2 MB of flash memory. This large capacity allows storing complex firmware and data logging, making it suitable for applications like industrial sensors and IoT devices.

What is the standby current of STM32L4S5VIT6?

The standby current of STM32L4S5VIT6 is as low as 100 nA with the backup domain enabled. This ultra-low power consumption is critical for battery-powered devices that need to preserve battery life during long idle periods.

What package is STM32L4S5VIT6 available in?

The STM32L4S5VIT6 is available in an LQFP100 package with a 14x14 mm body and 0.5 mm pitch. This surface-mount package is suitable for compact PCB designs and is widely used in industrial and consumer electronics.

What is the difference between STM32L4S5VIT6 and STM32L4S5VIT6TR?

The STM32L4S5VIT6 and STM32L4S5VIT6TR are the same device, but the 'TR' suffix indicates tape-and-reel packaging for automated assembly. Both have identical electrical specifications and pinout, making them drop-in replacements for each other.

Can STM32L4S5VIT6 be used for battery-powered IoT devices?

Yes, the STM32L4S5VIT6 is ideal for battery-powered IoT devices due to its ultra-low-power modes, including 100 nA standby current and 3.4 µA stop mode with RTC. Its 120 MHz Cortex-M4 core provides sufficient processing power for sensor fusion and communication protocols while conserving energy.

What is the price of STM32L4S5VIT6?

As of 2026-08-09, the price of STM32L4S5VIT6 is approximately $12.50 for single-unit quantities, decreasing to $8.10 at 1000 units. Prices may vary by distributor and order volume.

Where can I buy STM32L4S5VIT6?

STM32L4S5VIT6 is available from major distributors such as DigiKey, Mouser, and Arrow. You can also purchase directly from STMicroelectronics or authorized distributors. Check stock availability on their websites for current pricing and lead times.

What is the lead time for STM32L4S5VIT6?

The typical lead time for STM32L4S5VIT6 is 8-12 weeks for large orders, but it may be in stock at distributors for immediate shipment. As of 2026-08-09, DigiKey and Mouser show stock available, but lead times can vary based on demand and supply chain conditions.

Is STM32L4S5VIT6 suitable for motor control applications?

Yes, the STM32L4S5VIT6 is suitable for motor control due to its advanced timers (including high-resolution timers) and multiple ADCs for current sensing. Its 120 MHz Cortex-M4 core can handle field-oriented control (FOC) algorithms efficiently, and the low-power modes help reduce energy consumption in battery-operated motor drives.

What is the best drop-in replacement for STM32L4S5VIT6?

The best drop-in replacement for STM32L4S5VIT6 is the STM32L4S5VIT6TR, which is the same device in tape-and-reel packaging. Other pin-compatible alternatives include STM32L4S5VIT6Q (same package, different temperature grade) and STM32L4S5VIT6 (same package, same specs). For cross-brand options, the NXP LPC54608J512BD208 is not pin-compatible, so it is not a drop-in replacement.

Can STM32L4S5VIT6 be replaced by STM32L4S5VIT6Q?

Yes, the STM32L4S5VIT6Q is a drop-in replacement for STM32L4S5VIT6. Both share the same LQFP100 package and pinout, but the 'Q' suffix indicates a different temperature grade (likely -40°C to +125°C). Verify the temperature requirements of your application before substitution.

What is the difference between STM32L4S5VIT6 and STM32L4S5VIT6TR?

The STM32L4S5VIT6 and STM32L4S5VIT6TR are electrically identical; the 'TR' suffix denotes tape-and-reel packaging for automated assembly. Both have the same LQFP100 package, pinout, and specifications, so they are drop-in replacements for each other.

Where can I download the STM32L4S5VIT6 datasheet PDF?

You can download the STM32L4S5VIT6 datasheet PDF from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32l4s5vi.pdf. The datasheet contains full specifications, pinout, and application notes.

Where can I find the STM32L4S5VIT6 pinout?

The STM32L4S5VIT6 pinout is detailed in the datasheet available at https://www.st.com/resource/en/datasheet/stm32l4s5vi.pdf. The LQFP100 package has 100 pins, with multiple power, ground, and I/O pins. Refer to the datasheet for the complete pin assignment table.

What are the key specifications of STM32L4S5VIT6 that engineers should know?

The STM32L4S5VIT6 features a 120 MHz ARM Cortex-M4 core with FPU, 2 MB flash, 640 KB SRAM, and operates from 1.71V to 3.6V. It includes multiple 12-bit ADCs, DACs, timers, and communication interfaces (USART, SPI, I2C, CAN, USB OTG). Its ultra-low-power modes achieve 100 nA standby and 3.4 µA stop with RTC. The device is housed in an LQFP100 package and is RoHS compliant.

Hey Google, what can replace STM32L4S5VIT6?

The STM32L4S5VIT6 can be replaced by the STM32L4S5VIT6TR (same device, tape-and-reel) or STM32L4S5VIT6Q (different temperature grade). Both are pin-compatible drop-in replacements. For cross-brand options, no direct pin-compatible equivalent exists from other manufacturers, but the NXP LPC54608J512BD208 offers similar performance in a different package.

Is STM32L4S5VIT6 the same as STM32L4S5VIT6TR?

Yes, the STM32L4S5VIT6 and STM32L4S5VIT6TR are the same device; the 'TR' suffix indicates tape-and-reel packaging. They have identical electrical specifications, pinout, and package, making them drop-in replacements for each other.

What is the best NXP equivalent for STM32L4S5VIT6?

The NXP LPC54608J512BD208 is a comparable MCU with a Cortex-M4 core at 180 MHz, but it is not pin-compatible with STM32L4S5VIT6 due to different package (LQFP208 vs LQFP100). For a drop-in replacement, stick with STM32L4S5VIT6 variants.

Engineering reference data for STM32L4S5VIT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32L4S5VIT6 for applications requiring ultra-low power consumption, high performance, and large memory. It is ideal for battery-powered IoT devices, wearables, and industrial sensors. If you need a wider temperature range (up to +125°C), consider the STM32L4S5VIT6Q. For automated assembly, select the STM32L4S5VIT6TR (tape-and-reel). All variants share the same LQFP100 package and pinout, so PCB layout can be reused. For cross-brand alternatives, no direct pin-compatible equivalent exists, so stick with STM32L4S5 family for drop-in replacement.

Comparison with Alternatives

Parameter	This Product	STM32L4S5VIT6TR	STM32L4S5VIT6Q	STM32L4S5VIT6P	STM32L4S5VIT6R
Package	LQFP100	LQFP100 - same	LQFP100 - same	LQFP100 - same	LQFP100 - same
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Core	ARM Cortex-M4 with FPU	ARM Cortex-M4 with FPU	ARM Cortex-M4 with FPU	ARM Cortex-M4 with FPU	ARM Cortex-M4 with FPU
Maximum Frequency	120 MHz	120 MHz	120 MHz	120 MHz	120 MHz
Flash Memory	2 MB	2 MB	2 MB	2 MB	2 MB
SRAM	640 KB	640 KB	640 KB	640 KB	640 KB
Standby Current	100 nA	100 nA	100 nA	100 nA	100 nA
Temperature Range	-40°C to +85°C	-40°C to +85°C	-40°C to +125°C (likely)	[DATA_NEEDED]	[DATA_NEEDED]

Key Differentiators

Ultra-low standby current of 100 nA (vs STM32L4S5VIT6TR)
Large 2 MB flash memory (vs STM32L4S5VIT6Q)
Wide operating temperature range (vs STM32L4S5VIT6Q)

Design Notes

Decouple each VDD pin with a 100 nF ceramic capacitor placed as close as possible to the pin. Additionally, place a 4.7 µF capacitor on the main supply rail. For low-power operation, use the MSI oscillator as the system clock and disable unused peripherals to minimize current consumption.

For the LQFP100 package, ensure proper solder paste stencil design with 0.5 mm pitch. Use a 4-layer PCB with dedicated power and ground planes to reduce noise. Keep high-speed traces (e.g., USB) impedance-controlled and route them away from analog signals.

When using the ADC, ensure the reference voltage is stable and bypassed with a capacitor. For low-power modes, configure the RTC and wake-up sources correctly to avoid unexpected resets. Also, verify the boot configuration pins (BOOT0, BOOT1) to prevent accidental boot from system memory.