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STMicroelectronics STM32L452VET3
- Part No.:
- STM32L452VET3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L452VET3.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,612
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Product details
Overview
STM32L452VET3 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 512 KB Flash, 160 KB SRAM, and integrated analog peripherals including 12-bit ADC (5 Msps), dual 12-bit DAC, op-amp with PGA, and ultra-low-power comparators. It supports USB 2.0 full-speed (crystal-less), SAI audio interface, CAN 2.0B, SDMMC, and LPUART - deployed in battery-powered medical sensors and portable industrial data loggers.
For engineers reviewing the STM32L452VET3 datasheet, STM32L452VET3 pinout, STM32L452VET3 application, or STM32L452VET3 equivalent, key selection criteria include verified 2.05 µA Stop 2 mode current, 375 nA Standby+RTC power, 512 KB Flash with readout protection, and UFBGA100 (7×7 mm) package compatibility with high-density PCB layouts.
Technical Context
This MCU implements FlexPowerControl architecture with dual voltage regulation options: internal LDO or external SMPS, enabling 36 µA/MHz run-mode efficiency at 3.3 V. Its ART Accelerator™ delivers zero-wait-state execution from Flash, while the interconnect matrix decouples bus arbitration for deterministic peripheral access.
The device integrates a full-featured analog subsystem with independent supply domains: 12-bit ADC supports hardware oversampling up to 16-bit resolution, dual DACs include low-power sample-and-hold, and two ultra-low-power comparators operate in Stop 2 mode - all synchronized via shared trigger routing and DMA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP filtering and sensor fusion without external co-processor. |
| Memory | 512 KB Flash (single-bank, code readout protected), 160 KB SRAM (32 KB with parity) - supports secure firmware updates and robust runtime data integrity. |
| Power Modes | 375 nA Standby+RTC, 2.05 µA Stop 2, 36 µA/MHz SMPS-run - extends coin-cell operation beyond 10 years in periodic wake-up sensing applications. |
| Analog Peripherals | 1×12-bit ADC (5 Msps, 200 µA/Msps), 2×12-bit DAC, 1×OPAMP+PGA, 2×ULP comparators - enables self-contained signal conditioning for analog sensor front-ends. |
| Communication | USB 2.0 FS (crystal-less), CAN 2.0B, SAI, 4×I²C (FM+), 4×USART/LPUART, Quad-SPI - supports mixed-signal edge nodes with audio, fieldbus, and memory expansion. |
| Package | UFBGA100 (7×7 mm, 0.5 mm pitch) - provides 83 GPIOs (most 5 V-tolerant) in space-constrained industrial and wearable designs. |
Pinout & Package
STM32L452VET3 is housed in a 100-pin Ultra-Fine-Pitch Ball Grid Array (UFBGA100) package measuring 7 mm × 7 mm with 0.5 mm ball pitch, optimized for high I/O density and thermal performance in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Dedicated domains: VDD (digital core), VDDA (analog), VDDIO2 (I/O bank 2) - enable independent noise isolation and voltage scaling. |
| VSS, VSSA, VSSIO2 | Ground returns | Separate ground planes per domain minimize coupling noise between digital switching and precision analog circuits. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15, PF0–PF15, PG0–PG15 | General-purpose I/Os | 83 total GPIOs; most support 5 V tolerance, multiple alternate functions (AF0–AF15), and event generation in low-power modes. |
| BOOT0 | Boot configuration | High at reset selects system memory boot (for DFU/UART programming); tied low for main Flash execution - critical for field firmware recovery. |
| NRST | Reset input | Active-low, Schmitt-triggered, supports external reset sources and programmable reset timing - ensures reliable initialization under brown-out conditions. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables dynamic switching between LDO and external SMPS, reducing active-mode current by 57% (84 → 36 µA/MHz) at 3.3 V. |
| ART Accelerator™ | Eliminates Flash wait states at 80 MHz, delivering 3.42 CoreMark/MHz - sustains deterministic real-time response in interrupt-driven control loops. |
| Brown-out reset (BOR) | Configurable thresholds (2.0/2.2/2.4/2.7 V) with hysteresis - prevents erratic operation during battery voltage sag in portable equipment. |
| Batch Acquisition Mode (BAM) | Permits CPU sleep while peripherals autonomously acquire and process sensor data via DMA - cuts average system power by >40% in duty-cycled monitoring. |
| Capacitive touch sensing (TSC) | 21-channel controller supporting touchkey, linear, and rotary sensors - enables intuitive HMI without external ICs in medical handhelds. |
Applications
| Portable Medical Sensor | Industrial Data Logger |
|---|---|
Use Scenario: Continuous ECG/SpO₂ monitoring using dry-electrode sensors and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Main controller executing real-time QRS detection, ADC oversampling, and USB HID report generation with sub-10 µs timer jitter. Use Value: 375 nA Standby+RTC enables multi-year operation on CR2032; integrated op-amp + PGA eliminates discrete signal-chain components. |
Use Scenario: Remote environmental monitoring (temp/humidity/pressure) with SD card logging and LoRaWAN uplink. IC Role / Device Role / Timing Role: System-on-chip managing sensor polling, CRC-protected FAT32 writes, and LPUART wake-up from Stop 2 mode. Use Value: 2.05 µA Stop 2 mode with RTC alarm reduces average current to <1 µA; Quad-SPI supports fast external flash for firmware OTA. |
| Smart Energy Meter | Audio-Enabled IoT Gateway |
Use Scenario: DIN-rail mounted meter with metrology ASIC interface, tamper detection, and PLC communication. IC Role / Device Role / Timing Role: Secure host processor handling AES-128 encryption, CAN 2.0B fieldbus comms, and isolated RS-485 gateway logic. Use Value: 512 KB Flash accommodates dual-bank secure bootloader; 145 nA VBAT mode preserves RTC and backup registers during main power loss. |
Use Scenario: Voice-controlled home automation hub with MEMS microphone array and speaker output. IC Role / Device Role / Timing Role: Audio subsystem controller running SAI-based I²S/TDM streams, DAC playback, and USB audio class (UAC2) enumeration. Use Value: Integrated SAI and dual DAC eliminate external audio codec; 12-bit ADC supports analog mic biasing and battery voltage monitoring. |
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 |
|---|---|---|---|
| STM32L476VGT6 | Higher Flash (1 MB), added Chrom-ART accelerator, no SAI, same UFBGA100 footprint - lacks audio interface but adds graphics acceleration. | Suitable for GUI-enabled HMI where display rendering dominates over audio processing. | Select when needing larger code space and TFT-LCD support, not audio I/O. |
| STM32L552VET6 | ARM TrustZone®, 256 KB SRAM, 512 KB Flash, 110 nA Stop 2, same pinout - adds hardware security but increases cost and power in non-secure deployments. | Required for PSA Level 1 certified devices handling sensitive credentials or OTA keys. | Choose only if cryptographic isolation and secure boot are mandatory design requirements. |
Compared with STM32L452VET3, STM32L476VGT6 trades audio capability for graphics acceleration and doubled Flash, while STM32L552VET6 adds TrustZone security at higher cost and marginally lower ultra-low-power efficiency - making the L452 optimal for cost-sensitive, audio-integrated edge sensors.
Availability
STM32L452VET3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, smart energy meters, and audio-enabled IoT gateways requiring stable component supply across multi-year production cycles.
Supply support for STM32L452VET3 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, sensors, and automotive semiconductors since 1987.
The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich analog integration, and real-time performance - specifically engineered for wearables, portable diagnostics, and industrial edge nodes.
FAQ
What is the maximum operating frequency and associated performance metric?
The STM32L452VET3 operates at up to 80 MHz with an Arm Cortex-M4 core featuring FPU and DSP instructions, achieving 100 DMIPS and 273.55 CoreMark® (3.42 CoreMark/MHz). This performance level supports real-time sensor fusion algorithms and audio preprocessing without external accelerators.
Does STM32L452VET3 support crystal-less USB operation?
Yes, it integrates a USB 2.0 full-speed PHY with built-in clock recovery system (CRS), enabling crystal-less USB operation - eliminating the need for an external 48 MHz crystal and reducing BOM cost and PCB area in space-constrained designs.
How many GPIOs are available and what is their voltage tolerance?
The UFBGA100 package provides up to 83 fast I/Os; the majority are 5 V-tolerant, allowing direct interfacing with legacy 5 V peripherals without level-shifting circuitry - simplifying design in mixed-voltage industrial systems.
What low-power modes are supported and their typical current consumption?
It supports Shutdown (22 nA), Standby (106 nA), Standby+RTC (375 nA), Stop 2 (2.05 µA), and Run modes (36 µA/MHz with SMPS). These values are measured at 3.3 V and -40 °C to +85 °C, validated per DS11912 Rev 7 Section 6.3.5.
STM32L452VET3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, PWM, WDT
- Number of I/O:
- 83
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 160K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L452VET3 FAQ
1.How can I place an order for STM32L452VET3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L452VET3 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 STM32L452VET3 reliable?
The price and inventory of STM32L452VET3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L452VET3 is usually 5 days.
3.What payment methods are accepted for STM32L452VET3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L452VET3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L452VET3?
STM32L452VET3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L452VET3 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 STM32L452VET3?
For technical support, including STM32L452VET3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L452VET3 requirements.
6.How does Aetrix verify that STM32L452VET3 is sourced from the original manufacturer or authorized distributors?
All STM32L452VET3 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 STM32L452VET3 meets industry standards.
7.What is the process for return or replacement of STM32L452VET3?
All STM32L452VET3 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L452VET3, 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 STM32L452VET3 part is unused and in its original packaging.
Return procedure for STM32L452VET3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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