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STMicroelectronics STM32L462CEU6
- Part No.:
- STM32L462CEU6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32L462CEU6.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,063
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Product details
Overview
STM32L462CEU6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, delivering 100 DMIPS at 80 MHz, featuring 512 KB Flash, 160 KB SRAM (32 KB with hardware parity), and integrated analog peripherals including 12-bit ADC (5 Msps), dual 12-bit DAC, op-amp with PGA, and AES-128/256 hardware accelerator - deployed in battery-powered IoT sensor nodes requiring long runtime and secure firmware updates.
For engineers reviewing the STM32L462CEU6 datasheet, STM32L462CEU6 pinout, STM32L462CEU6 application, or STM32L462CEU6 equivalent, key selection criteria include verified low-power mode current (375 nA Standby + RTC), UFBGA64 (5×5 mm) package compatibility, USB 2.0 full-speed crystal-less operation, LPUART wake-up capability in Stop 2 mode, and hardware-accelerated cryptographic support for edge-device authentication.
Technical Context
The STM32L462CEU6 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 proprietary code readout protection. Its FlexPowerControl architecture supports seven low-power modes - including Shutdown (22 nA), Standby with RTC (375 nA), and Stop 2 (2.40 µA with RTC) - all validated across –40 °C to +125 °C.
It integrates dual PLLs (system/audio/ADC), a 32-bit SysTick timer, two watchdogs (IWDG/WWDG), and a dedicated interconnect matrix routing 17 communication interfaces - including CAN 2.0B, SAI, Quad SPI, SDMMC, and USB - while maintaining independent analog supply domains for ADC/DAC/OPAMP/COMP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max frequency, 100 DMIPS performance |
| Memory | 512 KB Flash (single-bank, code readout protected), 160 KB SRAM (32 KB with parity) |
| Low-Power Modes | Shutdown: 22 nA; Standby+RTC: 375 nA; Stop 2+RTC: 2.40 µA; Run: 84 µA/MHz |
| Analog Peripherals | 1× 12-bit ADC (5 Msps, 16-bit oversampling), 2× 12-bit DAC, 1× OPAMP with PGA, 2× comparators |
| Crypto & Security | AES-128/256 hardware accelerator, true RNG, 96-bit unique ID, CRC unit |
| Communication | USB 2.0 FS (crystal-less), CAN 2.0B, 4× I²C FM+, 3× USART, 1× LPUART, SAI, Quad SPI, SDMMC |
| Package | UFBGA64 (5 × 5 mm, 0.5 mm pitch), ECOPACK2® compliant |
Pinout & Package
STM32L462CEU6 is housed in a 64-ball Ultra-Fine Pitch Ball Grid Array (UFBGA64) package measuring 5 mm × 5 mm with 0.5 mm ball pitch, optimized for space-constrained portable and wearable designs. The package supports 51 GPIOs (most 5 V-tolerant), 14-channel DMA, and full debug access via SWD/JTAG.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | 1.71–3.6 V core/analog supply; decoupling required per datasheet layout guidelines |
| VBAT | Backup power domain | Supplies RTC and 32×32-bit backup registers during main power loss (1.65–3.6 V) |
| PA0–PA15, PB0–PB15, PC0–PC15, PD2, PE0–PE15 | General-purpose I/Os | Up to 51 pins; most 5 V-tolerant; support multiple alternate functions (AF0–AF15) |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external reset supervisor ICs |
| BOOT0 | Boot mode selection | High at power-up enables system memory boot (for DFU); tied low for Flash boot |
| USB_DP / USB_DM | USB 2.0 full-speed differential pair | Crystal-less operation enabled via internal 48 MHz HSI48 clock with CRS calibration |
| LPUART1_TX / LPUART1_RX | Low-power UART interface | Wakes CPU from Stop 2 mode; supports LIN, IrDA, modem protocols |
| PA13 / PA14 | SWD debug interface | Serial Wire Debug (SWDIO/SWCLK); no JTAG pins required for basic debug |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 22 nA Shutdown and 375 nA Standby+RTC - validated across industrial temperature range |
| ART Accelerator™ | Eliminates Flash wait states at 80 MHz, reducing active-mode energy per instruction |
| Dual PLL system | Separate PLLs for CPU, audio (SAI), and ADC clocks - avoids cross-domain interference |
| Hardware AES engine | Accelerates AES-128/256 encryption/decryption without CPU intervention - critical for OTA update security |
| Batch Acquisition Mode (BAM) | Allows peripheral-triggered data capture while CPU remains in low-power state - ideal for sensor polling |
| Independent analog supply domain | Isolates ADC/DAC/OPAMP/COMP from digital noise; supports precise 2.048 V/2.5 V buffered reference |
Applications
| Smart Wearable Sensor Hub | Secure Industrial Edge Node |
|---|---|
Use Scenario: Continuous ECG/temperature monitoring in wrist-worn health tracker powered by coin-cell battery. IC Role / Device Role / Timing Role: Central MCU managing capacitive touch sensing (TSC), analog front-end (ADC + OPAMP + COMP), and BLE co-processor via UART. Use Value: 375 nA Standby+RTC extends battery life beyond 12 months; hardware AES ensures encrypted sensor log transmission. | Use Scenario: Wireless vibration monitor on rotating machinery with local FFT processing and alarm triggering. IC Role / Device Role / Timing Role: Real-time signal acquisition (ADC @ 5 Msps), DSP computation (Cortex-M4 FPU), and CAN 2.0B reporting to PLC. Use Value: ART Accelerator enables zero-wait-state FFT execution from Flash; Stop 2 mode with LPUART wake-up reduces average system power by >60%. |
| USB-C Powered Portable Audio Device | Low-Power Smart Meter Interface |
Use Scenario: Battery-backed USB audio dongle supporting 48 kHz stereo playback via SAI-connected DAC. IC Role / Device Role / Timing Role: USB host controller (crystal-less), SAI master, dual-channel DAC driver, and voltage reference buffer (VREFBUF). Use Value: Internal 48 MHz HSI48 + CRS eliminates external crystal; 12-bit DAC with sample-and-hold enables glitch-free audio output. | Use Scenario: Sub-metering module collecting pulse inputs, RS-485 telemetry, and tamper detection via capacitive sensing. IC Role / Device Role / Timing Role: Pulse counter (TIM2), isolated RS-485 transceiver interface (USART1), and TSC-based cover-open detection. Use Value: 21-channel TSC supports multi-zone tamper sensing; 5 V-tolerant GPIOs interface directly with legacy pulse meters without level shifters. |
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 | Higher Flash (1 MB) and SRAM (128 KB), adds LCD controller and more timers; no built-in SAI or Quad SPI | Better suited for graphical HMI with segment LCD; lacks crystal-less USB and SAI for audio | Select when display interface and larger code footprint are required over audio/peripheral density |
| STM32L552CEU6 | ARMv8-M TrustZone®, 256 KB Flash, 256 KB SRAM, enhanced crypto (PKA, AES-GCM), 110 µA/MHz run current | Designed for certified secure boot and firmware attestation; higher active power vs. L462's 84 µA/MHz | Choose for PSA Level 1-certified applications where hardware root-of-trust outweighs ultra-low active power |
Compared with STM32L476RG, the STM32L462CEU6 offers superior audio integration (SAI + crystal-less USB) and lower standby current (375 nA vs. 500 nA), while STM32L552CEU6 trades raw low-power efficiency for mandatory security features - making L462 optimal for cost-sensitive, battery-limited audio/sensing nodes needing balanced performance and security.
Availability
STM32L462CEU6 is available at Aetrix Electronics and suitable for smart wearables, industrial edge sensors, USB-C audio accessories, and secure metering systems requiring stable component supply across extended product lifecycles.
Supply support for STM32L462CEU6 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 analog components for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, combining Cortex-M4 FPU compute with advanced analog integration and hardware security - specifically engineered for battery-operated IoT endpoints.
FAQ
What is the maximum operating temperature rating for STM32L462CEU6?
The STM32L462CEU6 is qualified for operation from –40 °C to +125 °C ambient temperature, validated per STMicroelectronics' industrial-grade qualification standards (AEC-Q100 not applicable, but meets extended temperature requirements for harsh environments). This rating applies to all low-power modes and full-speed USB operation.
Does STM32L462CEU6 support crystal-less USB operation?
Yes - the device integrates an internal 48 MHz HSI48 oscillator with Clock Recovery System (CRS) that dynamically calibrates against the USB SOF signal, enabling full-speed (12 Mbps) USB 2.0 communication without an external crystal. This is confirmed in Section 3.34 and Table 50 of DS11913 Rev 5.
How many capacitive sensing channels does STM32L462CEU6 provide?
The STM32L462CEU6 integrates a Touch Sensing Controller (TSC) supporting up to 21 capacitive sensing channels, configurable for touchkey, linear, or rotary sensor layouts. All channels share a single sigma-delta modulator and support hardware-accelerated acquisition with automatic scan sequencing.
Is the UFBGA64 package of STM32L462CEU6 RoHS and REACH compliant?
Yes - the UFBGA64 package is ECOPACK2® certified, meeting both RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006 requirements. Full material declarations and compliance documentation are available in ST's official product change notifications (PCNs) and environmental reports.
STM32L462CEU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- 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, QSPI, SAI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, PWM, WDT
- Number of I/O:
- 38
- 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 10x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L462CEU6 FAQ
1.How can I place an order for STM32L462CEU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L462CEU6 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 STM32L462CEU6 reliable?
The price and inventory of STM32L462CEU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L462CEU6 is usually 5 days.
3.What payment methods are accepted for STM32L462CEU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L462CEU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L462CEU6?
STM32L462CEU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L462CEU6 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 STM32L462CEU6?
For technical support, including STM32L462CEU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L462CEU6 requirements.
6.How does Aetrix verify that STM32L462CEU6 is sourced from the original manufacturer or authorized distributors?
All STM32L462CEU6 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 STM32L462CEU6 meets industry standards.
7.What is the process for return or replacement of STM32L462CEU6?
All STM32L462CEU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L462CEU6, 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 STM32L462CEU6 part is unused and in its original packaging.
Return procedure for STM32L462CEU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L462CEU6 Tags
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