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STMicroelectronics STM32L443VCT6
- Part No.:
- STM32L443VCT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L443VCT6.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:600
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Product details
Overview
STM32L443VCT6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit microcontroller with FPU, delivering 100 DMIPS at 80 MHz, featuring 256 KB flash, 64 KB SRAM, USB FS, LCD controller, AES hardware accelerator, and analog peripherals including 12-bit ADC (5 Msps), dual 12-bit DACs, op-amp, and two ultra-low-power comparators - deployed in battery-powered medical sensors and portable HMI devices.
For engineers reviewing the STM32L443VCT6 datasheet, STM32L443VCT6 pinout, STM32L443VCT6 application, or STM32L443VCT6 equivalent, key selection criteria include its 280 nA Standby-with-RTC current, 4 µs wakeup from Stop mode, 83 I/Os (most 5 V-tolerant), LQFP100 package compatibility, and integrated LCD driver supporting 8×40 segments - critical for energy-constrained embedded designs requiring mixed-signal integration and secure firmware execution.
Technical Context
The STM32L443VCT6 implements an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash memory, paired with a Memory Protection Unit (MPU) and proprietary code readout protection. Its FlexPowerControl architecture supports seven low-power modes, including Shutdown (8 nA), Standby with RTC (280 nA), and Stop 2 (1.0 µA), all validated across -40 °C to +105 °C.
It integrates dual PLLs for independent clock domains (system, USB, audio, ADC), a 32-bit interconnect matrix for concurrent peripheral access, and hardware-accelerated AES-128/256 encryption. The analog subsystem operates on an independent supply rail and includes a programmable gain amplifier (PGA), temperature sensor, and VREFINT reference - enabling precision sensor signal conditioning without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max frequency, 100 DMIPS performance - enables real-time DSP and control algorithms in resource-constrained systems. |
| Memory | 256 KB single-bank Flash (with readout protection), 64 KB SRAM (16 KB with hardware parity) - supports secure firmware storage and robust data integrity for safety-critical tasks. |
| Low-power Modes | Shutdown: 8 nA; Standby with RTC: 280 nA; Stop 2: 1.0 µA - extends battery life in always-on sensing and wearable applications beyond 5 years on coin-cell power. |
| Analog Peripherals | 12-bit ADC @ 5 Msps (200 µA/Msps), dual 12-bit DACs, 1 op-amp with PGA, 2 ultra-low-power comparators - allows high-fidelity sensor acquisition and analog output generation without external signal chain ICs. |
| Connectivity | USB 2.0 FS (crystal-less), CAN 2.0B, SAI, 4x USART, LPUART, 3x SPI, 3x I²C, SDMMC, SWPMI - supports multi-protocol industrial telemetry and audio streaming in compact form factors. |
| Package & I/O | LQFP100 (14 × 14 mm), 83 I/Os (most 5 V-tolerant), 14-channel DMA - provides high peripheral density and board-level voltage interoperability with legacy 5 V logic. |
| Security & Debug | AES-128/256 hardware accelerator, 96-bit unique ID, CRC unit, Serial Wire Debug (SWD), JTAG - enables secure boot, firmware authentication, and production-grade debug trace without performance penalty. |
Pinout & Package
LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin count: 100 leads with exposed thermal pad (EPAD) for enhanced thermal dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate digital (VDD), analog (VDDA), and I/O (VDDIO2) rails enable noise isolation for precision ADC/DAC operation and flexible voltage domain partitioning. |
| VSS, VSSA, VSSIO2 | Ground returns | Dedicated analog (VSSA) and I/O (VSSIO2) grounds minimize coupling noise into sensitive analog circuits and improve EMI immunity. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15, PF0–PF15, PG0–PG15 | General-purpose I/Os | 83 total GPIOs; most support 5 V tolerance, multiple alternate functions (AF0–AF15), and fast toggle capability - simplifies interface to legacy peripherals and level-shifting circuits. |
| NRST | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external reset sources or push-button debouncing - ensures deterministic startup under brown-out or supply instability. |
| BOOT0 | Boot mode selection | Configures boot source (system memory, main flash, or SRAM) at power-on reset - essential for field firmware updates and bootloader validation workflows. |
| OSC_IN / OSC_OUT | HSE crystal oscillator interface | Supports 4–48 MHz external crystal for precise system timing; optional bypass mode for external clock injection - required for USB FS and RTC accuracy. |
| LCD pins (LCD_V1–LCD_V4, LCD_SEGx, LCD_COMy) | LCD controller outputs | Direct drive for 8×40 or 4×44 segment LCDs with integrated step-up converter - eliminates need for external bias generator in portable display applications. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables sub-µA standby with RTC and 4 µs wakeup from Stop mode - reduces average system power by >90% versus standard Cortex-M4 MCUs in intermittent sensing duty cycles. |
| ART Accelerator™ | Zero-wait-state execution from flash at 80 MHz - eliminates instruction cache misses and delivers consistent 100 DMIPS performance without SRAM code shadowing. |
| Integrated LCD controller | Drives up to 320 segments (8×40) with internal charge pump - cuts BOM cost and PCB area by removing external LCD bias IC and associated passive components. |
| Capacitive touch sensing (TSC) | 21-channel hardware-accelerated touch controller supporting touchkey, linear, and rotary sensors - enables intuitive user interfaces without dedicated touch IC or firmware overhead. |
| Hardware AES engine | 128/256-bit key encryption/decryption with DMA support - accelerates secure communication (TLS, OTA updates) and data-at-rest protection at <100 µs per 128-bit block. |
Applications
| Portable Medical Sensors | Smart Utility Meters |
|---|---|
Use Scenario: Continuous glucose monitoring patch with Bluetooth LE telemetry and onboard calibration. IC Role / Device Role / Timing Role: Main system controller handling sensor ADC sampling, real-time glucose algorithm execution, encrypted BLE packet assembly, and LCD status display. Use Value: 280 nA Standby-with-RTC enables multi-year battery life; integrated op-amp and PGA condition raw electrochemical sensor signals without external amplification. |
Use Scenario: Battery-powered water/gas meter with ultrasonic flow sensing and NB-IoT connectivity. IC Role / Device Role / Timing Role: Low-power host MCU managing ultrasonic transducer timing, pulse counting, tamper detection, and secure firmware updates over cellular link. Use Value: 8 nA Shutdown mode extends 10-year battery life; CAN 2.0B interface supports legacy AMR infrastructure; AES engine secures remote configuration commands. |
| Industrial HMI Panels | Wearable Health Trackers |
Use Scenario: Touch-enabled factory floor display with local alarm logging and Modbus RTU gateway functionality. IC Role / Device Role / Timing Role: Human-machine interface processor driving 4×44 segment LCD, scanning capacitive touch keys, and bridging RS-485 Modbus to USB-CDC virtual COM port. Use Value: Integrated LCD controller and TSC eliminate discrete display/touch controllers; LPUART enables wake-from-Stop via fieldbus command - reducing system latency and component count. |
Use Scenario: Optical heart-rate monitor with PPG signal acquisition, motion artifact compensation, and Bluetooth audio streaming. IC Role / Device Role / Timing Role: Signal processing hub synchronizing LED drivers, photodiode ADC sampling, DSP filtering, and SAI-based audio codec interface. Use Value: Dual 12-bit DACs generate precise LED drive waveforms; SAI supports I²S/TDM audio output; 1.28 µA Stop-with-RTC preserves session state during sleep intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L476VGT6 | Higher flash (1 MB) and SRAM (128 KB), added Ethernet MAC and Chrom-ART accelerator; no LCD controller; 1.15 µA Stop 2 mode. | Better suited for connected gateways requiring TCP/IP stack and GUI rendering; lacks integrated LCD driver for simple segment displays. | Select when network connectivity and larger code footprint outweigh LCD integration needs. |
| STM32L552VET6 | ARMv8-M TrustZone security, 512 KB flash, 256 KB SRAM, 1.26 µA Stop 2, no LCD or TSC; includes PKA and cryptographic services. | Designed for secure IoT endpoints requiring hardware root-of-trust and secure firmware update; no display or touch support. | Choose for applications demanding PSA Level 3 certification and confidential computing - not for display-centric designs. |
Compared with STM32L476VGT6 and STM32L552VET6, the STM32L443VCT6 uniquely balances ultra-low-power operation, integrated LCD/TSC, and analog signal chain in LQFP100 - making it optimal for cost-sensitive, battery-operated HMI and sensor nodes where display integration and sub-µA standby are non-negotiable.
Availability
STM32L443VCT6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial HMI panels, and wearable health trackers requiring stable component supply across long-lifecycle deployments.
Supply support for STM32L443VCT6 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, specializing in microcontrollers, power management, sensors, and automotive ICs - serving industrial, automotive, and consumer markets with vertically integrated manufacturing.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, integrated analog peripherals, and secure firmware execution - designed specifically for battery-powered edge devices with display, sensing, and wireless connectivity requirements.
FAQ
What is the maximum operating temperature range for STM32L443VCT6?
The STM32L443VCT6 is qualified for industrial operation from -40 °C to +105 °C ambient temperature. This rating is confirmed in Section 6.3.1 of the DS11421 Rev 6 datasheet and applies to all LQFP100 variants. Thermal derating begins above 105 °C, and junction temperature must remain below 125 °C under sustained load conditions.
Does STM32L443VCT6 support USB device mode without an external crystal?
Yes - the STM32L443VCT6 integrates a USB 2.0 Full-Speed crystal-less solution using its internal 48 MHz clock recovery system (CRS), synchronized to the USB SOF token. This eliminates the need for an external 48 MHz crystal or oscillator, reducing BOM cost and PCB area while maintaining ±0.25% frequency accuracy required for USB compliance.
How many capacitive touch channels does the TSC support on this part?
The Touch Sensing Controller (TSC) on STM32L443VCT6 supports up to 21 capacitive sensing channels, configurable for touchkey, linear touch slider, or rotary touch wheel implementations. All channels are hardware-accelerated and operate independently of CPU load, with built-in noise filtering and auto-calibration - verified in Section 3.20 of the datasheet.
Is the LCD controller capable of driving static or multiplexed displays?
The LCD controller supports both static and multiplexed (up to 1/8 duty, 1/4 bias) segment-type displays, with configurations for 8×40 or 4×44 segments. It includes an integrated step-up converter for generating LCD bias voltages, eliminating external charge pumps - detailed in Section 3.21 and Table 1 of the DS11421 datasheet.
STM32L443VCT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-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:
- CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, PWM, WDT
- Number of I/O:
- 83
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 64K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L443VCT6 FAQ
1.How can I place an order for STM32L443VCT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L443VCT6 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 STM32L443VCT6 reliable?
The price and inventory of STM32L443VCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L443VCT6 is usually 5 days.
3.What payment methods are accepted for STM32L443VCT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L443VCT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L443VCT6?
STM32L443VCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L443VCT6 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 STM32L443VCT6?
For technical support, including STM32L443VCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L443VCT6 requirements.
6.How does Aetrix verify that STM32L443VCT6 is sourced from the original manufacturer or authorized distributors?
All STM32L443VCT6 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 STM32L443VCT6 meets industry standards.
7.What is the process for return or replacement of STM32L443VCT6?
All STM32L443VCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L443VCT6, 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 STM32L443VCT6 part is unused and in its original packaging.
Return procedure for STM32L443VCT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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