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STMicroelectronics STM32L452VEI6TR
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- Part No.:
- STM32L452VEI6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-UFBGA
- Datasheet:
-
STM32L452VEI6TR.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 100UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,045
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Product details
Overview
STM32L452VEI6TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 80 MHz max frequency, 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 RTC with hardware calendar. It supports external SMPS for 36 µA/MHz run efficiency and operates from -40 °C to 125 °C in LQFP100 package-used in battery-powered industrial sensors and portable medical monitors.
For engineers reviewing the STM32L452VEI6TR datasheet, STM32L452VEI6TR pinout, STM32L452VEI6TR application, or STM32L452VEI6TR equivalent, key selection criteria include verified ultra-low-power modes (22 nA shutdown, 375 nA standby + RTC), USB 2.0 full-speed crystal-less operation, SAI audio interface support, and CAN 2.0B active compliance for embedded control systems.
Technical Context
This MCU implements an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from Flash at 80 MHz, paired with a Memory Protection Unit (MPU) and interconnect matrix for deterministic peripheral arbitration. Its power architecture integrates dual voltage regulators (LDO/SMPS), brown-out reset, and five wakeup-capable pins across Stop/Standby modes.
The analog subsystem features independent supply domains, supporting simultaneous high-precision acquisition (12-bit ADC with 16-bit oversampling) and low-noise signal conditioning (op-amp + PGA, buffered 2.048 V reference). Clock system includes dual PLLs-one dedicated to audio clocking-and auto-trimmed internal oscillators with ±0.25% accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS, DSP instructions, MPU |
| Memory | 512 KB Flash (single-bank, code readout protection), 160 KB SRAM (32 KB with parity) |
| Power Consumption | 22 nA Shutdown mode; 375 nA Standby + RTC; 36 µA/MHz @3.3 V with SMPS |
| Analog Peripherals | 1×12-bit ADC (5 Msps, 200 µA/Msps), 2×12-bit DAC, 1×OPAMP+PGA, 2×comparators, 2.048 V ref buffer |
| Connectivity | USB 2.0 FS crystal-less, 1×SAI, 4×I²C FM+, 3×USART, 1×LPUART, 3×SPI + Quad-SPI, CAN 2.0B, SDMMC |
| Timers & Control | 12 timers: 1×advanced motor-control, 2×low-power 16-bit (active in Stop), 2×watchdogs, SysTick |
| Package | LQFP100 (14 × 14 mm, 0.5 mm pitch), ECOPACK2® compliant, -40 °C to +125 °C |
Pinout & Package
LQFP100 package: 100-pin plastic quad flat pack, 14 mm × 14 mm body, 0.5 mm lead pitch, exposed thermal pad, RoHS-compliant and ECOPACK2® certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Main, analog, and I/O supply rails | Independent domains enable noise-isolated analog operation and flexible I/O voltage scaling |
| VSS, VSSA, VSSIO2 | Ground references | Dedicated analog and I/O ground planes minimize coupling in mixed-signal designs |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 83 fast I/Os; most 5 V-tolerant, configurable as GPIO, AF, or event inputs |
| PC13–PC15 | RTC oscillator terminals | Support 32.768 kHz crystal connection for autonomous calendar/timekeeping during Standby |
| PA11/PA12 | USB D+/D− | Crystal-less USB 2.0 full-speed interface with built-in transceivers and LPM/BCD support |
| PD0/PD1 | OSC_IN/OSC_OUT | 4–48 MHz external crystal input for system clock; supports HSE bypass mode |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Seven low-power modes with sub-µA quiescent current and 4 µs wakeup from Stop-enables multi-year battery life in remote sensing |
| ART Accelerator™ | Zero-wait-state Flash execution at 80 MHz eliminates performance penalty of on-chip memory access latency |
| Capacitive touch sensing | 21-channel TSC supporting touchkey, linear, and rotary sensors without external components |
| True random number generator | Digital entropy source compliant with NIST SP800-90B for secure key generation in IoT edge nodes |
| Batch Acquisition Mode (BAM) | Permits CPU sleep while peripherals autonomously acquire and preprocess sensor data-reduces active duty cycle by >60% |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-operated wireless temperature/humidity/pressure node with local data logging and BLE gateway handoff. IC Role / Device Role / Timing Role: Main controller executing sensor fusion, real-time clock management, and low-power scheduling via LPTIM2 and RTC alarms. Use Value: 22 nA Shutdown and 375 nA Standby + RTC extend coin-cell lifetime beyond 10 years; SAI enables direct microphone interface for voice-triggered wake. | Use Scenario: Handheld ECG/SpO₂ monitor with analog front-end, display, and USB-C charging/data export. IC Role / Device Role / Timing Role: System-on-chip integrating ADC sampling, op-amp signal conditioning, DAC-driven reference, and USB crystal-less data upload. Use Value: 12-bit ADC (5 Msps) captures high-fidelity bio-signals; 2.048 V buffered reference ensures <±0.5 LSB offset drift over temperature. |
| Smart Utility Meter | Automotive Body Controller |
Use Scenario: UL-certified electricity/water meter with tamper detection, metrology engine, and PLC or RF mesh backhaul. IC Role / Device Role / Timing Role: Metrology co-processor interfacing with sigma-delta ADCs via DFSDM, managing secure firmware updates over LPUART. Use Value: Dual PLLs isolate audio clock domain (SAI) from metrology timing; CRC unit and 96-bit UID support secure boot and anti-cloning. | Use Scenario: Zone controller managing door locks, lighting, window lift, and CAN diagnostics in 12 V automotive systems. IC Role / Device Role / Timing Role: Secondary microcontroller handling LIN/IrDA communication, PWM dimming, and CAN 2.0B messaging with ISO 11898-1 compliance. Use Value: CAN interface supports error confinement and bit-rate up to 1 Mbps; 5 V-tolerant I/Os simplify direct connection to legacy automotive sensors. |
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 Ethernet MAC, no SAI; same LQFP100 package and core | Suitable for connected gateways requiring TCP/IP stack but lacking audio I/O needs | Select when network connectivity outweighs audio interface requirements |
| STM32L552VET6 | ARM TrustZone®, 256 KB SRAM, 512 KB Flash, 110 °C max ambient (vs. 125 °C) | Required for PSA Level 1–2 certified secure boot, firmware attestation, and encrypted storage | Choose for applications demanding hardware-enforced security isolation |
Compared with STM32L476VGT6 and STM32L552VET6, the STM32L452VEI6TR uniquely balances ultra-low-power analog integration (SAI, op-amp, 2.048 V ref) and extended temperature range (−40 °C to +125 °C) without security or networking overhead-making it optimal for cost-sensitive, battery-constrained industrial and medical edge devices.
Availability
STM32L452VEI6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart utility meters, and automotive body controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for STM32L452VEI6TR 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog chips for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications where energy efficiency, analog integration, and robust real-time performance are critical-especially in battery-powered and thermally constrained environments.
FAQ
What is the maximum operating temperature specification for STM32L452VEI6TR?
The STM32L452VEI6TR is rated for operation from −40 °C to +125 °C ambient temperature, validated per ST's industrial qualification standards. This extended range supports deployment in under-hood automotive modules, industrial motor drives, and outdoor metering equipment without derating.
Does STM32L452VEI6TR support crystal-less USB operation?
Yes-STM32L452VEI6TR integrates a full-speed USB 2.0 transceiver with built-in clock recovery system (CRS), enabling crystal-less USB operation. It meets USB-IF electrical compliance and supports Link Power Management (LPM) and Battery Charging Detection (BCD) v1.2.
How many capacitive sensing channels does STM32L452VEI6TR provide?
The device includes a dedicated Touch Sensing Controller (TSC) supporting up to 21 capacitive sensing channels. It natively handles touchkey, linear, and rotary sensor geometries with hardware-accelerated acquisition and noise immunity-no external RC networks or dedicated ASICs required.
Is the 2.048 V reference voltage buffered and available externally?
Yes-the STM32L452VEI6TR provides a precision 2.048 V reference voltage with integrated buffer amplifier. It is accessible on dedicated VREF+ pin (PC0) and maintains ±0.5% initial accuracy and <10 ppm/°C drift over temperature-ideal for high-resolution ADC/DAC calibration and sensor excitation.
STM32L452VEI6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-UFBGA
- Series:
- STM32L4
- Packaging:
- Tape & Reel (TR)
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L452VEI6TR FAQ
1.How can I place an order for STM32L452VEI6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L452VEI6TR 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 STM32L452VEI6TR reliable?
The price and inventory of STM32L452VEI6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L452VEI6TR is usually 5 days.
3.What payment methods are accepted for STM32L452VEI6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L452VEI6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L452VEI6TR?
STM32L452VEI6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L452VEI6TR 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 STM32L452VEI6TR?
For technical support, including STM32L452VEI6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L452VEI6TR requirements.
6.How does Aetrix verify that STM32L452VEI6TR is sourced from the original manufacturer or authorized distributors?
All STM32L452VEI6TR 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 STM32L452VEI6TR meets industry standards.
7.What is the process for return or replacement of STM32L452VEI6TR?
All STM32L452VEI6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L452VEI6TR, 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 STM32L452VEI6TR part is unused and in its original packaging.
Return procedure for STM32L452VEI6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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