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STMicroelectronics STM32L151VET6
- Part No.:
- STM32L151VET6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L151VET6.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,844
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Product details
Overview
STM32L151VET6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller featuring 512 KB Flash, 80 KB SRAM, 16 KB EEPROM with ECC, USB 2.0 interface, and 12-bit ADC (1 Msps, up to 40 channels). It operates from 1.65 V to 3.6 V across –40 °C to 105 °C and delivers 195 µA/MHz in Run mode - deployed in battery-powered medical sensors and portable industrial data loggers requiring long-term autonomous operation.
For engineers reviewing the STM32L151VET6 datasheet, STM32L151VET6 pinout, STM32L151VET6 application, or STM32L151VET6 equivalent, key selection criteria include standby current (290 nA), RTC-enabled Stop mode (1.11 µA), 102 I/Os (5V-tolerant), dual 12-bit DACs with buffers, and integrated LCD driver support (excluded in STM32L151xE variants).
Technical Context
The STM32L151VET6 implements dynamic voltage scaling and multiple low-power modes (Run, Sleep, Low-power Run/Sleep, Stop, Standby) with hardware-accelerated wake-up from Stop mode in 8 µs. Its Cortex-M3 core runs at up to 32 MHz with MPU, 1.25 DMIPS/MHz performance, and supports RWW (Read-While-Write) Flash via dual-bank architecture.
On-chip clocking includes a 32 kHz LSE for RTC calibration, internal MSI oscillator (65 kHz–4.2 MHz), 16 MHz HSI (±1%), and PLL supporting both CPU (up to 32 MHz) and USB (48 MHz) clocks. Analog subsystem integrates two op-amps, two ultra-low-power comparators, temperature sensor, and VREFINT reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M3, 32-bit, up to 32 MHz - enables deterministic real-time control with MPU for memory protection in safety-critical firmware. |
| Memory | 512 KB Flash (ECC, dual-bank RWW), 80 KB SRAM, 16 KB EEPROM (ECC) - supports firmware updates without full erase and retains calibration data across power cycles. |
| Power Consumption | 290 nA Standby (3 wakeup pins), 1.11 µA Standby+RTC, 560 nA Stop (16 wakeup lines) - extends coin-cell battery life to >10 years in maintenance-free sensor nodes. |
| Analog Peripherals | 12-bit ADC (1 Msps, 40 channels), 2×12-bit DAC (buffered), 2×op-amps, 2×ultra-low-power comparators - enables simultaneous signal acquisition, conditioning, and analog output in compact instrumentation. |
| I/O & Connectivity | 116 fast I/Os (102 5V-tolerant), USB 2.0 FS, 5×USART, 8×SPI (2×I2S), 2×I2C - supports mixed-signal host communication, sensor interfacing, and audio streaming without external level shifters. |
| Clock Sources | 1–24 MHz HSE, 32.768 kHz LSE, 16 MHz HSI (±1%), MSI (65 kHz–4.2 MHz), PLL for CPU/USB - eliminates need for external crystal in cost-sensitive designs while maintaining RTC accuracy. |
| Operating Range | 1.65 V to 3.6 V supply, –40 °C to +105 °C ambient - certified for industrial edge devices and wearable medical monitors exposed to wide thermal gradients. |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 leads; thermally enhanced for sustained operation at 105 °C ambient. Pin count and I/O mapping align with STM32L151xE series footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain decoupling; supports separate analog ground (VSSA) for ADC/DAC noise isolation. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 116 total I/Os; 102 are 5V-tolerant - simplifies interface to legacy peripherals and reduces BOM count in mixed-voltage systems. |
| NRST | Active-low reset input | Internal pull-up; accepts external push-button or supervisor IC assertion - enables robust field recovery without MCU-level software intervention. |
| BOOT0 | Boot mode selection | High at power-on enters system memory bootloader - allows in-field firmware update via USART or USB without debug probe. |
| USB_DP / USB_DM | USB 2.0 Full-Speed differential pair | Integrated transceiver with internal 1.5 kΩ pull-up on DP - eliminates external USB resistor network and reduces PCB area. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby | 290 nA with 3 wakeup pins active - enables decade-scale battery life in always-listening IoT endpoints. |
| True EEPROM with ECC | 16 KB of byte-erasable, wear-leveled nonvolatile storage - preserves device calibration, serial numbers, and usage logs across 100k write cycles. |
| Capacitive touch sensing | Up to 34 channels with hardware-accelerated acquisition - supports multi-button UI and proximity detection without external controller. |
| Hardware CRC unit | Dedicated 32-bit CRC engine with programmable polynomial - accelerates firmware integrity checks and secure OTA update validation. |
| Low-power RTC + backup registers | 1.11 µA Stop mode + RTC with 128-byte backup SRAM - maintains real-time timestamp and critical state during main power loss. |
Applications
| Portable ECG Monitor | Smart Gas Detector |
|---|---|
|
Use Scenario: Wearable clinical-grade electrocardiogram acquisition with Bluetooth LE telemetry and rechargeable Li-ion power management. IC Role / Device Role / Timing Role: Central controller managing analog front-end (ADC, op-amps), real-time signal processing, USB/USART firmware updates, and ultra-low-power sleep scheduling. Use Value: 12-bit ADC (1 Msps) captures high-fidelity cardiac waveforms; 290 nA Standby extends battery runtime between charges beyond 7 days. |
Use Scenario: Battery-operated industrial gas sensor node with electrochemical cell interface, local alarm, and LoRaWAN backhaul. IC Role / Device Role / Timing Role: Signal conditioner (DAC-driven bias, comparator-triggered alert), low-power scheduler, and secure firmware updater via UART bootloader. Use Value: Dual ultra-low-power comparators enable fast gas-concentration threshold detection; 560 nA Stop mode ensures >5-year shelf life before deployment. |
| Programmable Logic Controller (PLC) I/O Module | Wireless Sensor Node for Predictive Maintenance |
|
Use Scenario: DIN-rail mounted modular I/O expansion unit with isolated digital inputs, analog current loop outputs, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Interface processor handling protocol stack, galvanically isolated SPI-to-RS485 bridge, and precision DAC-based 4–20 mA loop control. Use Value: 2×12-bit buffered DACs drive current loops directly; 102 5V-tolerant I/Os simplify connection to legacy industrial sensors and actuators. |
Use Scenario: Vibration and temperature monitoring node on rotating machinery, powered by energy harvesting and transmitting FFT data weekly. IC Role / Device Role / Timing Role: Data aggregator (ADC sampling, FFT acceleration via CMSIS-DSP), low-power scheduler, and secure wireless transmitter controller. Use Value: 8 µs wake-up time from Stop mode minimizes latency in event-triggered sampling; CRC unit validates sensor data integrity end-to-end. |
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 |
|---|---|---|---|
| STM32L432KCU6 | ARM Cortex-M4F core, 256 KB Flash, no EEPROM, lower standby (150 nA), no LCD driver | Better DSP performance for motor control; lacks EEPROM for persistent calibration storage | Select when floating-point math or higher clock efficiency (2.14 DMIPS/MHz) outweighs EEPROM requirement. |
| EFM32PG12B500F1024GL125 | ARM Cortex-M4, 1024 KB Flash, 256 KB RAM, 2 kB EEPROM, 1.4 µA Stop mode, no USB | Superior RAM for complex protocol stacks; lacks native USB, requires external PHY for host connectivity | Choose for deep-sleep-critical mesh nodes where USB is unnecessary and large RAM buffers improve packet throughput. |
Compared with STM32L151VET6, STM32L432KCU6 trades EEPROM and LCD support for higher compute density and lower standby, while EFM32PG12B500F1024GL125 offers larger memory but sacrifices USB integration - making STM32L151VET6 optimal for USB-connected, calibration-heavy, battery-constrained instrumentation.
Availability
STM32L151VET6 is available at Aetrix Electronics and suitable for portable medical devices, industrial gas detectors, PLC I/O modules, and predictive maintenance sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for STM32L151VET6 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, Switzerland, designing and manufacturing microcontrollers, power management ICs, MEMS, and automotive semiconductors since 1987.
The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust analog integration, and industrial temperature resilience - optimized for metering, wearables, and sensor edge nodes.
FAQ
Does STM32L151VET6 support USB device mode without external components?
Yes. The STM32L151VET6 integrates a full-speed USB 2.0 transceiver with internal pull-up resistor on USB_DP, enabling USB device mode (e.g., CDC virtual COM port) using only standard USB cable and host-side drivers - no external PHY or termination resistors required.
What is the maximum number of capacitive sensing channels supported?
The STM32L151VET6 supports up to 34 capacitive sensing channels using its built-in touch sensing controller (TSC), with hardware-accelerated acquisition, spread-spectrum modulation, and automatic recalibration - validated per IEC 61000-4-3/6 immunity standards.
How does the 16 KB EEPROM differ from standard Flash in practice?
This 16 KB EEPROM is implemented as true EEPROM (not Flash emulation), offering byte-level erasure, 100,000 write cycles, and guaranteed data retention for 20 years at 85 °C - unlike Flash, it requires no background wear-leveling firmware and supports atomic writes for critical parameters like calibration coefficients.
Is the LCD driver functional on STM32L151VET6?
No. The LCD controller is excluded in all STM32L151xE variants (including STM32L151VET6); it is only present in STM32L152xE devices. This part relies on external display drivers or alternative interfaces (SPI, I2C) for segment or graphical LCDs.
STM32L151VET6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, Cap Sense, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 83
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 16K x 8
- RAM Size:
- 80K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 25x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L151VET6 FAQ
1.How can I place an order for STM32L151VET6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L151VET6 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 STM32L151VET6 reliable?
The price and inventory of STM32L151VET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L151VET6 is usually 5 days.
3.What payment methods are accepted for STM32L151VET6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L151VET6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L151VET6?
STM32L151VET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L151VET6 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 STM32L151VET6?
For technical support, including STM32L151VET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L151VET6 requirements.
6.How does Aetrix verify that STM32L151VET6 is sourced from the original manufacturer or authorized distributors?
All STM32L151VET6 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 STM32L151VET6 meets industry standards.
7.What is the process for return or replacement of STM32L151VET6?
All STM32L151VET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L151VET6, 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 STM32L151VET6 part is unused and in its original packaging.
Return procedure for STM32L151VET6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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