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STMicroelectronics STM32L412RBI6P
- Part No.:
- STM32L412RBI6P
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA
- Datasheet:
-
STM32L412RBI6P.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,587
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Product details
Overview
STM32L412RBI6P from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 128 KB flash, 40 KB SRAM, and integrated analog peripherals including dual 12-bit ADCs (5 Msps), one operational amplifier with PGA, and one ultra-low-power comparator. It supports external SMPS for optimized efficiency and targets battery-powered IoT sensor nodes, portable medical devices, and energy-harvesting systems requiring sub-µA standby operation.
For engineers reviewing the STM32L412RBI6P datasheet, STM32L412RBI6P pinout, STM32L412RBI6P application, or STM32L412RBI6P equivalent, key selection criteria include verified 28 µA/MHz run-mode current at 3.3 V with SMPS, 245 nA Standby + RTC, 4 µs wakeup from Stop mode, and LQFP64 (10×10 mm) package compatibility with industrial temperature range (–40 °C to +85 °C).
Technical Context
The STM32L412RBI6P implements FlexPowerControl architecture with multiple low-power modes: Shutdown (16 nA), Standby (245 nA with RTC), Stop 2 (0.7 µA), and Run mode down to 28 µA/MHz using external SMPS. Its ART Accelerator™ enables zero-wait-state execution from flash at 80 MHz, while the interconnect matrix decouples bus arbitration for deterministic peripheral access.
It integrates a full-featured analog subsystem with independent supply domains: two 12-bit ADCs supporting hardware oversampling up to 16-bit resolution, one rail-to-rail op-amp with programmable gain (1–20×), and one comparator with window mode. Clocking includes factory-trimmed 16 MHz RC (±1%), auto-calibrated multispeed oscillator (±0.25%), and USB crystal-less full-speed capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP and control algorithms without external co-processor. |
| Memory | 128 KB flash (single-bank, code readout protection), 40 KB SRAM (8 KB with hardware parity) - supports secure firmware storage and robust data integrity in safety-critical tasks. |
| Power Consumption | 28 µA/MHz in Run mode with SMPS @3.3 V - reduces battery drain in always-on edge nodes; 245 nA Standby + RTC sustains timekeeping for >10 years on coin cell. |
| Analog Peripherals | 2× 12-bit ADC (5 Msps, 200 µA/Msps), 1× op-amp (PGA), 1× comparator - allows simultaneous sensor signal conditioning and threshold detection without external components. |
| Timers & Connectivity | 10 timers (including 2 low-power 16-bit), USB 2.0 FS crystal-less, 3× USART, 3× I²C, LPUART, Quad SPI - supports sensor fusion, wireless coexistence, and memory expansion in compact designs. |
| Package & Temp | LQFP64 (10×10 mm, 0.5 mm pitch), –40 °C to +85 °C - compatible with standard PCB assembly and suitable for industrial-grade portable equipment. |
Pinout & Package
LQFP64 (10×10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Dual-supply domain: VDD powers digital core and I/Os; separate VDDA/VSSA required for analog accuracy. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15 | General-purpose I/Os | Up to 52 fast I/Os; most 5 V-tolerant - simplifies level-shifting in mixed-voltage systems. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset button or supervisor IC integration. |
| BOOT0 | Boot mode selection | High at power-up enters system memory bootloader; enables field firmware updates via UART/USB without debugger. |
| VBAT | RTC and backup register supply | Accepts 1.65–3.6 V; maintains RTC calendar and 32×32-bit registers during main power loss. |
| OSC_IN / OSC_OUT | External high-speed crystal interface | Supports 4–48 MHz crystals; essential for USB timing accuracy and precise clock generation. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl low-power modes | 245 nA Standby + RTC and 4 µs wakeup from Stop enable rapid response in duty-cycled sensor applications. |
| ART Accelerator™ | Zero-wait-state execution from flash at 80 MHz eliminates cache misses and ensures deterministic real-time performance. |
| Dual 12-bit ADC with oversampling | Hardware-enabled 16-bit resolution at 5 Msps supports high-fidelity analog acquisition for precision sensing. |
| Integrated op-amp with PGA | Programmable gain (1–20×) and rail-to-rail output allow direct amplification of microvolt-level sensor outputs. |
| Crystal-less USB 2.0 FS | Eliminates external 48 MHz crystal and matching capacitors, reducing BOM cost and PCB area in space-constrained designs. |
Applications
| Wireless Sensor Node | Portable ECG Monitor |
|---|---|
|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and motion data every 5 minutes, transmitting via BLE. IC Role / Device Role / Timing Role: Main controller executing sensor polling, ADC conversion, data preprocessing, and low-power radio coordination; RTC triggers periodic wakeups. Use Value: 245 nA Standby + RTC extends CR2032 battery life beyond 5 years; LPUART and low-power timers minimize active time during measurement cycles. |
Use Scenario: Handheld electrocardiogram device acquiring analog biopotential signals, filtering, and displaying waveform on OLED. IC Role / Device Role / Timing Role: Analog front-end controller managing op-amp gain stages, 12-bit ADC sampling at 1 kSPS, real-time QRS detection, and display refresh. Use Value: Integrated op-amp with PGA and 12-bit ADC eliminate discrete signal chain components; 40 KB SRAM buffers multi-lead waveform data for analysis. |
| Smart Utility Meter | Energy-Harvesting Tracker |
|
Use Scenario: Tamper-resistant electricity meter logging voltage/current harmonics and communicating via NB-IoT every hour. IC Role / Device Role / Timing Role: System-on-chip handling metrology calculations (via DSP instructions), secure firmware updates, and modem interface management. Use Value: 128 KB flash stores dual-bank firmware for safe OTA updates; CRC unit and 96-bit UID support cryptographic authentication and anti-cloning. |
Use Scenario: Solar-powered GPS tracker activating only when motion is detected, then logging position and transmitting via LoRaWAN. IC Role / Device Role / Timing Role: Ultra-low-power supervisor managing energy harvesting PMIC, wake-on-motion via comparator, and burst-mode GPS acquisition. Use Value: 16 nA Shutdown mode preserves harvested energy between events; comparator with window mode detects vibration thresholds without CPU involvement. |
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 | Same Cortex-M4 core, but 256 KB flash, 64 KB SRAM, includes AES-256 and SHA-256 crypto accelerators; LQFP32 package (48 pins). | Better suited for secure firmware signing and encrypted communication; smaller footprint but fewer GPIOs and no Quad SPI. | Select when cryptographic offload and compact size outweigh need for analog integration and external memory expansion. |
| STM32L552RET6 | ARM TrustZone-enabled Cortex-M33, 512 KB flash, 256 KB SRAM, 110 µA/MHz Run (SMPS), -40°C to +105°C. | Targets higher-security industrial control and functional safety (IEC 61508 SIL2-ready); higher power and cost than L412. | Choose when hardware-enforced isolation, extended temperature range, or larger memory is mandatory for certification. |
Compared with STM32L412RBI6P, the STM32L432KCU6 trades analog richness and memory interface for security acceleration and compactness, while the STM32L552RET6 adds TrustZone and extended temp rating at significantly higher power and cost-making the L412 optimal for cost-sensitive, analog-intensive, battery-constrained edge nodes.
Availability
STM32L412RBI6P is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, smart utility meters, and energy-harvesting trackers requiring stable component supply across long-lifecycle industrial programs.
Supply support for STM32L412RBI6P 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.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance per µA, with emphasis on battery longevity, analog integration, and flexible power management for IoT endpoints and portable electronics.
FAQ
What is the maximum operating frequency and associated performance metric?
The STM32L412RBI6P operates at up to 80 MHz with an Arm Cortex-M4 core featuring FPU and DSP extensions. Its performance is quantified at 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz), validated under conditions with ART Accelerator™ enabled and zero-wait-state flash execution.
Does this MCU support external SMPS, and what is the measured efficiency benefit?
Yes, the STM32L412RBI6P supports external SMPS via dedicated VDD12 and VDDA12 pins. With SMPS supplying 1.1 V to the core, typical Run-mode current drops to 28 µA/MHz at 3.3 V I/O, achieving ~2.8× lower dynamic power versus LDO-only operation (79 µA/MHz), as confirmed in Table 26 of DS12469 Rev 9.
How many ADC channels and what resolution options are available?
The device integrates two independent 12-bit ADCs, each capable of up to 5 Msps sampling rate. Hardware oversampling (up to 256×) enables effective resolutions of 13–16 bits with configurable data rate trade-offs, as specified in Section 3.15 and Table 48 of the datasheet.
Is the LQFP64 package RoHS-compliant and thermally rated for industrial use?
Yes, the LQFP64 package (10×10 mm, 0.5 mm pitch) is ECOPACK2-compliant and rated for industrial temperature range (–40 °C to +85 °C). Thermal resistance θJA is 44.5 °C/W (JEDEC Std 51-7), and junction-to-case (θJC) is 12.5 °C/W, enabling reliable operation in enclosed enclosures without forced airflow.
STM32L412RBI6P 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:
- I2C, Infrared, IrDA, LINbus, Quad SPI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, PWM, WDT, (External SMPS Required)
- Number of I/O:
- 52
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 40K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L412RBI6P FAQ
1.How can I place an order for STM32L412RBI6P through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L412RBI6P 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 STM32L412RBI6P reliable?
The price and inventory of STM32L412RBI6P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L412RBI6P is usually 5 days.
3.What payment methods are accepted for STM32L412RBI6P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L412RBI6P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L412RBI6P?
STM32L412RBI6P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L412RBI6P 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 STM32L412RBI6P?
For technical support, including STM32L412RBI6P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L412RBI6P requirements.
6.How does Aetrix verify that STM32L412RBI6P is sourced from the original manufacturer or authorized distributors?
All STM32L412RBI6P 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 STM32L412RBI6P meets industry standards.
7.What is the process for return or replacement of STM32L412RBI6P?
All STM32L412RBI6P units undergo pre-shipment inspection (PSI). If there is an issue with STM32L412RBI6P, 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 STM32L412RBI6P part is unused and in its original packaging.
Return procedure for STM32L412RBI6P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L412RBI6P Tags
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ATTINY4-TSHR
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PIC10F200T-I/OT
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ATTINY412-SSNR
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