My Inquiry
My Account
STMicroelectronics STM32L412C8T6
- Part No.:
- STM32L412C8T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32L412C8T6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,763
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32L412C8T6 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 sensors, portable medical devices, and energy-harvesting edge nodes.
For engineers reviewing the STM32L412C8T6 datasheet, STM32L412C8T6 pinout, STM32L412C8T6 application, or STM32L412C8T6 equivalent, key selection criteria include its 28 µA/MHz SMPS-run efficiency, 32 nA Standby mode, LPUART wake-up capability, and QSPI XIP support for external code execution - all validated in production-grade DS12469 Rev 9.
Technical Context
This MCU implements the Arm Cortex-M4 core with FPU and Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz. Its FlexPowerControl architecture integrates multiple low-power modes - Shutdown (16 nA), Standby (32 nA), Stop 2 (245 nA with RTC), and Run (28 µA/MHz with SMPS) - each with deterministic wakeup timing (e.g., 4 µs from Stop).
The peripheral interconnect matrix enables concurrent operation of analog (dual ADC, OPAMP, COMP), timing (10 timers including 2 low-power LPTIMs), and communication resources (USB FS, 3×I²C, 3×USART, LPUART, 2×SPI, QUADSPI). All analog blocks feature independent supply domains and hardware oversampling support up to 16-bit resolution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max frequency, 100 DMIPS performance |
| Memory | 128 KB single-bank Flash (with readout protection), 40 KB SRAM (8 KB with parity) |
| Power Efficiency | 28 µA/MHz in Run mode with external SMPS; 32 nA in Standby mode (4 wakeup pins) |
| Analog Peripherals | 2×12-bit ADC (5 Msps, hardware oversampling to 16-bit), 1×OPAMP with PGA, 1×ultra-low-power comparator |
| Timers | 10 timers: 1×advanced-control (TIM1), 2×general-purpose 16/32-bit, 2×low-power (LPTIM1/2 active in Stop), 2×watchdogs |
| Communication | USB 2.0 FS (crystal-less), 3×I²C FM+, 3×USART (ISO7816/LIN/IrDA), 1×LPUART, 2×SPI, 1×QUADSPI (XIP capable) |
| Package & Pins | UFQFPN32 (5×5 mm), 29 I/Os (most 5 V-tolerant), LQFP32-compatible footprint |
Pinout & Package
STM32L412C8T6 is housed in a 32-pin UFQFPN package (5 × 5 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2-certified. Pin layout supports compact PCB design with dedicated VDD/VSS pairs, flexible GPIO remapping via 16 alternate functions (AF0–AF15), and dedicated power domains for analog (VDDA/VSSA) and USB (VBUS/VDDUSB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDUSB | Supply inputs | VDD (1.71–3.6 V digital), VDDA (analog domain), VDDUSB (USB PHY); decoupling required per datasheet Section 6.3.6 |
| VSS, VSSA | Ground returns | Digital and analog ground separation critical for ADC/OPAMP noise immunity; star grounding recommended |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/Os | Up to 29 GPIOs; most 5 V-tolerant; support EXTI, timer channels, ADC inputs, and touch sensing (TSC) |
| PA2/PA3 | USART2 TX/RX | Default LPUART interface; supports wake-up from Stop 2 mode - essential for ultra-low-power comms |
| PA4–PA7 | ADC1_IN[1:4] | Four dedicated ADC input channels; usable with hardware oversampling for enhanced resolution or noise reduction |
| PA13/PA14 | SWDIO/SWCLK | Serial Wire Debug interface; no JTAG pins required - reduces debug footprint and pin count |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Seven low-power modes with sub-µA quiescent current; 4 µs wakeup from Stop enables rapid sensor polling |
| ART Accelerator™ | Zero-wait-state execution from flash at 80 MHz - eliminates cache misses in deterministic real-time loops |
| Dual 12-bit ADC with oversampling | 5 Msps sampling rate; hardware averaging up to 16-bit effective resolution without CPU overhead |
| Integrated analog signal chain | OPAMP with programmable gain + ultra-low-power comparator enable self-contained sensor front-end design |
| QUADSPI with XIP capability | Execute code directly from external flash via QUADSPI interface - extends memory beyond on-chip 128 KB limit |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-operated temperature/humidity node transmitting via BLE or LoRaWAN every 5 minutes. IC Role / Device Role / Timing Role: Main controller managing sensor acquisition, data preprocessing, low-power radio interface, and RTC-triggered wakeup. Use Value: 32 nA Standby + 4 µs Stop wakeup minimizes idle current; dual ADC supports simultaneous temp/humidity reads with hardware oversampling. |
Use Scenario: Handheld ECG or pulse oximeter requiring clinical-grade analog front-end and long battery life. IC Role / Device Role / Timing Role: Signal processor handling analog acquisition (ECG channel + SpO₂ LED drivers), real-time filtering, and USB/HID data export. Use Value: Integrated OPAMP+PGA configures programmable gain for weak biosignals; 12-bit ADC at 5 Msps captures high-fidelity waveforms. |
| Energy-Harvesting Edge Device | Smart Building Occupancy Sensor |
|
Use Scenario: Solar- or thermal-harvested node powering motion/light/ambient sensing with intermittent processing. IC Role / Device Role / Timing Role: Power-aware scheduler coordinating energy buffer management, sensor burst acquisition, and RF transmission windows. Use Value: External SMPS support enables >90% DC-DC efficiency; 28 µA/MHz Run mode maximizes computation per harvested µJ. |
Use Scenario: Wall-mounted PIR + ambient light sensor controlling HVAC/lighting in commercial spaces. IC Role / Device Role / Timing Role: Multi-sensor fusion hub running capacitive touch UI, RTC calendar, and secure firmware updates over LPUART. Use Value: 12-channel TSC enables touch buttons/gestures; LPUART allows field updates without waking full system - preserves 245 nA Stop 2 current. |
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 | 64 KB Flash, 16 KB SRAM, same core/peripherals but adds AES-256 & SHA-256 crypto accelerators | Better suited for secure firmware OTA or TLS-based cloud connectivity | Select when cryptographic acceleration is mandatory; otherwise STM32L412C8T6 offers higher memory density at lower cost |
| STM32L072CZT6 | Cortex-M0+, 32 KB Flash, 20 KB SRAM, lower performance (32 MHz), no FPU or ART Accelerator | Targeted at simpler control tasks where DSP or floating-point math is unnecessary | Choose for cost-sensitive, non-compute-intensive designs; STM32L412C8T6 delivers 3× DMIPS/Watt advantage |
Compared with STM32L432KCU6, the STM32L412C8T6 trades crypto acceleration for +64 KB Flash and +24 KB SRAM - ideal for local data buffering and complex sensor algorithms. Against STM32L072CZT6, it delivers M4-class compute, FPU, and ART-accelerated flash execution - critical for real-time signal processing in constrained power budgets.
Availability
STM32L412C8T6 is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, energy-harvesting edge devices, and smart building occupancy sensors requiring stable component supply across multi-year production cycles.
Supply support for STM32L412C8T6 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 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, extended battery life, and rich analog integration - specifically engineered for intelligent edge endpoints in IoT and portable electronics.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32L412C8T6 operates up to 80 MHz with 100 DMIPS performance. In Run mode with internal LDO, typical current is 79 µA/MHz; with external SMPS (VDD12 = 1.10 V), it drops to 28 µA/MHz - verified in DS12469 Table 26 under conditions of ART enabled and code executing from flash.
Does this MCU support crystal-less USB operation?
Yes. The STM32L412C8T6 integrates a USB 2.0 Full-Speed PHY with built-in clock recovery system (CRS), enabling crystal-less USB operation - confirmed in Section 3.26 of DS12469 and validated in production for HID and CDC device classes.
How many ADC channels are available and what is their maximum sampling rate?
It features two independent 12-bit ADCs supporting up to 16 channels total. Each ADC achieves 5 Msps (mega-samples per second) with single-ended input; hardware oversampling can extend effective resolution to 16-bit at reduced rates - specified in Section 3.15 and Table 48 of DS12469.
Is the UFQFPN32 package pin-compatible with other STM32L4 variants?
No. While the UFQFPN32 footprint matches STM32L412CBT6 and STM32L422CBT6, pin assignments differ across sub-families due to peripheral mapping variations (e.g., TIM1 vs TIM15 routing). Pin compatibility must be verified per device-specific pin definition tables (DS12469 Table 14).
STM32L412C8T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-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:
- I2C, Infrared, IrDA, LINbus, Quad SPI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 64KB (64K 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 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L412C8T6 FAQ
1.How can I place an order for STM32L412C8T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L412C8T6 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 STM32L412C8T6 reliable?
The price and inventory of STM32L412C8T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L412C8T6 is usually 5 days.
3.What payment methods are accepted for STM32L412C8T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L412C8T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L412C8T6?
STM32L412C8T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L412C8T6 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 STM32L412C8T6?
For technical support, including STM32L412C8T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L412C8T6 requirements.
6.How does Aetrix verify that STM32L412C8T6 is sourced from the original manufacturer or authorized distributors?
All STM32L412C8T6 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 STM32L412C8T6 meets industry standards.
7.What is the process for return or replacement of STM32L412C8T6?
All STM32L412C8T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L412C8T6, 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 STM32L412C8T6 part is unused and in its original packaging.
Return procedure for STM32L412C8T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L412C8T6 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
