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STMicroelectronics STM32L452RCI6
- Part No.:
- STM32L452RCI6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA
- Datasheet:
-
STM32L452RCI6.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,700
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Product details
Overview
STM32L452RCI6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 256 KB Flash, 160 KB SRAM, and integrated analog peripherals including 12-bit ADC (5 Msps), dual 12-bit DAC, and operational amplifier. It supports external SMPS for 36 µA/MHz run efficiency and includes USB 2.0 FS, SAI, CAN 2.0B, and LPUART-used in battery-powered industrial sensors and portable medical monitors.
For engineers reviewing the STM32L452RCI6 datasheet, STM32L452RCI6 pinout, STM32L452RCI6 application, or STM32L452RCI6 equivalent, key selection criteria include verified ultra-low-power modes (22 nA shutdown, 375 nA standby with RTC), UFBGA64 (5×5 mm) package compatibility, CAN + SDMMC interface coexistence, and ART Accelerator™-enabled zero-wait-state Flash execution at 80 MHz.
Technical Context
The STM32L452RCI6 implements an Arm Cortex-M4 core with FPU and Adaptive Real-time Accelerator (ART™) for deterministic Flash execution. Its power architecture integrates dual voltage regulators (LDO/SMPS), enabling dynamic switching between 84 µA/MHz (LDO) and 36 µA/MHz (SMPS) run modes while maintaining full peripheral availability.
It features a 12-bit ADC with hardware oversampling up to 16-bit resolution and 200 µA/Msps efficiency, paired with two independent 12-bit DACs and one rail-to-rail op-amp with programmable gain amplifier (PGA). The interconnect matrix enables concurrent high-bandwidth peripheral access without bus contention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max frequency, 100 DMIPS performance |
| Memory | 256 KB Flash (single-bank), 160 KB SRAM (32 KB with parity) |
| Power Consumption | 22 nA Shutdown mode; 375 nA Standby with RTC; 36 µA/MHz in SMPS Run mode |
| Analog Peripherals | 1× 12-bit ADC (5 Msps, 16-bit oversampled), 2× 12-bit DAC, 1× op-amp with PGA, 2× comparators |
| Communication | USB 2.0 FS (crystal-less), CAN 2.0B, SAI, 4× I²C (FM+), 4× USART/LPUART, 3× SPI + Quad-SPI |
| Timers | 12 timers: 1× advanced-control (TIM1), 2× low-power (LPTIM1/2), 2× watchdogs, SysTick |
| Package | UFBGA64 (5×5 mm, 0.4 mm pitch), 64-ball grid array |
Pinout & Package
STM32L452RCI6 is housed in a 5×5 mm UFBGA64 package with 0.4 mm ball pitch, optimized for space-constrained portable designs. Pin assignment follows ST's standardized STM32L452xx pinout layout for UFBGA64, supporting full peripheral remapping via alternate functions AF0–AF15.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate domains for digital core (VDD), analog (VDDA), and I/O (VDDIO2); enable independent noise isolation and SMPS/LDO selection |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/Os | Up to 83 fast I/Os (most 5 V-tolerant); support multiple alternate functions including USB, CAN, SAI, and ADC channels |
| PA1, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10–PC15, PD2, PE2–PE7 | ADC input channels | 20-channel 12-bit ADC with differential mode, hardware oversampling, and flexible sampling control |
| PA4, PA5 | DAC outputs | Two independent buffered 12-bit DAC outputs with configurable trigger sources and noise reduction modes |
| PA11, PA12 | USB D+/D− | Crystal-less USB 2.0 Full-Speed interface with built-in transceiver and LPM/BCD support |
| PD0, PD1 | CAN RX/TX | Dedicated CAN 2.0B interface with internal transceiver biasing and wakeup capability from Stop 2 mode |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Seven low-power modes with validated current specs: 22 nA Shutdown, 375 nA Standby+RTC, 2.05 µA Stop 2 |
| ART Accelerator™ | Enables 0-wait-state execution from Flash at 80 MHz, eliminating cache misses in deterministic real-time loops |
| Integrated analog subsystem | Single-chip solution with 12-bit ADC (5 Msps), dual DACs, op-amp+PGA, and 2.048 V/2.5 V buffered reference |
| Communication flexibility | Simultaneous CAN 2.0B + SDMMC + USB FS on dedicated pins; no resource conflict in UFBGA64 pinout |
| Security & reliability | Hardware CRC unit, 96-bit unique ID, readout protection (RDP), memory parity (32 KB SRAM), and BOR with 4 thresholds |
Applications
| Portable ECG Monitor | Smart Gas Sensor Node |
|---|---|
Use Scenario: Battery-operated wearable device acquiring analog ECG signals with real-time filtering and Bluetooth LE transmission. IC Role / Device Role / Timing Role: Main controller executing signal processing (FPU-accelerated FIR filters), driving 12-bit ADC/DAC for lead-off detection, and managing USB/SAI for audio feedback. Use Value: 2.05 µA Stop 2 mode extends battery life >3 months on coin cell; integrated op-amp+PGA eliminates external front-end components. |
Use Scenario: LoRaWAN-connected industrial gas detector requiring long-term field deployment with periodic sensor calibration and alarm reporting. IC Role / Device Role / Timing Role: System-on-chip managing electrochemical sensor biasing (via DAC), temperature-compensated ADC readings, and CAN-based local diagnostics bus. Use Value: 36 µA/MHz SMPS-run efficiency reduces average current to <12 µA during active sensing; LPUART wake-up enables sub-second response to gas threshold events. |
| USB-C Power Monitor | Low-Power HMI Controller |
Use Scenario: Compact USB-C PD monitor measuring V/I with isolated communication to host system via USB FS. IC Role / Device Role / Timing Role: Precision analog acquisition engine using dual 12-bit DACs for reference generation and 12-bit ADC for shunt-based current sensing. Use Value: Crystal-less USB FS eliminates external 48 MHz oscillator; 200 µA/Msps ADC efficiency enables 10 kSPS sampling with <2 µA analog subsystem draw. |
Use Scenario: Touch-enabled industrial control panel with capacitive buttons, LED dimming, and local CAN bus coordination. IC Role / Device Role / Timing Role: Human-machine interface hub running TSC for 21-channel touch sensing, PWM for LED drivers, and CAN for actuator command relay. Use Value: Integrated TSC eliminates external touch controller IC; 4 µs wakeup from Stop mode ensures immediate UI responsiveness after button press. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power Cortex-M4 MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L476RG | 512 KB Flash, 128 KB SRAM, no SAI, higher 160 nA Standby (no RTC), same UFBGA64 footprint | Lacks SAI and audio-focused peripherals; better suited for non-audio IoT gateways with larger code size needs | Select when >256 KB Flash is required and SAI/CAN coexistence is not needed |
| STM32L552RE | ARM TrustZone®, 320 KB Flash, 256 KB SRAM, 25 nA Shutdown, but no CAN or SDMMC interface | Targeted for secure firmware updates and encrypted storage; lacks CAN bus support for industrial fieldbus integration | Choose only when hardware security (TrustZone, AES, PKA) outweighs need for CAN/SDMMC connectivity |
Compared with STM32L476RG, STM32L452RCI6 delivers superior audio capability (SAI) and lower standby current with RTC, while STM32L552RE trades interface breadth for security features-making STM32L452RCI6 optimal for cost-sensitive, interface-rich, battery-constrained edge nodes.
Availability
STM32L452RCI6 is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor networks, and USB-C power monitoring systems requiring stable component supply across multi-year production cycles.
Supply support for STM32L452RCI6 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, and analog/mixed-signal solutions for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life and rich peripheral integration-including energy harvesting, wearables, and smart sensors-without sacrificing performance or security.
FAQ
What is the maximum operating frequency and associated performance metric of the STM32L452RCI6?
The STM32L452RCI6 operates at up to 80 MHz with an Arm Cortex-M4 core featuring FPU and ART Accelerator™. Its performance is quantified at 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz), validated under full Flash execution with cache enabled and prefetch disabled.
Does the STM32L452RCI6 support crystal-less USB operation, and what are the timing requirements?
Yes, it supports crystal-less USB 2.0 Full-Speed operation using its internal 48 MHz clock recovery system (CRS) synchronized to the USB SOF packet. No external crystal is required; the CRS achieves ±0.25% accuracy over temperature and voltage, meeting USB FS timing compliance without additional components.
How many low-power modes does the STM32L452RCI6 offer, and what is the lowest achievable current draw?
The device offers seven low-power modes. The lowest current draw is 22 nA in Shutdown mode with five wakeup pins enabled. Standby mode draws 375 nA when RTC and backup registers are active-verified per DS11912 Rev 7 Table 4 and Section 3.9.4.
Is the UFBGA64 package of the STM32L452RCI6 compatible with automated optical inspection (AOI) and reflow processes?
Yes, the UFBGA64 (5×5 mm, 0.4 mm pitch) package complies with IPC-7351B standards and is qualified for standard lead-free reflow profiles (peak 260 °C). Its solder-ball geometry and coplanarity (<0.08 mm) support reliable AOI detection and high-yield assembly in Class II/III production environments.
STM32L452RCI6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-UFBGA
- 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:
- 52
- Program Memory Size:
- 256KB (256K 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:
STM32L452RCI6 FAQ
1.How can I place an order for STM32L452RCI6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L452RCI6 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 STM32L452RCI6 reliable?
The price and inventory of STM32L452RCI6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L452RCI6 is usually 5 days.
3.What payment methods are accepted for STM32L452RCI6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L452RCI6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L452RCI6?
STM32L452RCI6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L452RCI6 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 STM32L452RCI6?
For technical support, including STM32L452RCI6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L452RCI6 requirements.
6.How does Aetrix verify that STM32L452RCI6 is sourced from the original manufacturer or authorized distributors?
All STM32L452RCI6 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 STM32L452RCI6 meets industry standards.
7.What is the process for return or replacement of STM32L452RCI6?
All STM32L452RCI6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L452RCI6, 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 STM32L452RCI6 part is unused and in its original packaging.
Return procedure for STM32L452RCI6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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