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STMicroelectronics STM32L443RCT6
- Part No.:
- STM32L443RCT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L443RCT6.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:892
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Product details
Overview
STM32L443RCT6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 80 MHz max frequency, 256 KB flash, 64 KB SRAM, and integrated USB FS, LCD controller, AES hardware accelerator, and analog peripherals including 12-bit ADC (5 Msps) and dual 12-bit DACs - deployed in battery-powered medical sensors and portable HMI devices.
For engineers reviewing the STM32L443RCT6 datasheet, STM32L443RCT6 pinout, STM32L443RCT6 application, or STM32L443RCT6 equivalent, key selection criteria include VBAT mode current (200 nA), Stop 2 wakeup time (4 µs), ART Accelerator™-enabled 0-wait-state flash execution, and LQFP64 package compatibility with industrial-grade temperature range (–40 °C to 105 °C).
Technical Context
The STM32L443RCT6 integrates 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 FlexPowerControl architecture supporting eight low-power modes - including Shutdown (8 nA), Standby with RTC (280 nA), and Stop 2 (1.28 µA with RTC). Its interconnect matrix decouples bus arbitration for concurrent peripheral access without CPU intervention.
It features dual PLLs (one for system clock, one for USB/audio), a dedicated LCD controller supporting 8×40 segments with integrated step-up converter, and hardware-accelerated AES-128/256 encryption - all operating within a 1.71–3.6 V supply range and qualified for extended temperature operation up to 105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS, DSP instructions and MPU for secure task isolation |
| Memory | 256 KB single-bank flash with readout protection; 64 KB SRAM (16 KB with hardware parity) |
| Low-Power Modes | Shutdown: 8 nA; Standby with RTC: 280 nA; Stop 2 with RTC: 1.28 µA; Run mode: 84 µA/MHz |
| Analog Peripherals | 1× 12-bit ADC @ 5 Msps (200 µA/Msps); 2× 12-bit DACs; 1× op-amp with PGA; 2× ultra-low-power comparators |
| Connectivity | USB 2.0 FS crystal-less; 4× USART, 1× LPUART, 3× SPI, 3× I²C FM+, CAN 2.0B, SAI, SDMMC, SWPMI, IRTIM |
| Special Functions | AES-128/256 hardware accelerator; true RNG; 21-channel capacitive touch sensing; LCD controller (8×40 or 4×44) |
| Package & Temp | LQFP64 (10 × 10 mm); operating temperature –40 °C to +105 °C; ECOPACK2 compliant |
Pinout & Package
LQFP64 package: 64-pin quad flat pack with 0.5 mm pitch, exposed thermal pad, RoHS-compliant, ECOPACK2 certified. Pin count and layout optimized for balanced signal integrity, debug access (SWD/JTAG), and mixed-signal routing in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | 1.71–3.6 V core/analog supply; supports independent VDDA domain for precision analog operation |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PF9–PF15 | General-purpose I/Os | Up to 51 GPIOs; most 5 V-tolerant; support 17 alternate functions including USB, CAN, SAI, LCD, and touch sensing |
| NRST | Reset input | Active-low reset with internal pull-up; supports external reset assertion and programmable reset source mapping |
| BOOT0 | Boot configuration | Controls boot mode (system memory, main flash, or SRAM); sampled at reset, requires external pull-up/down |
| PA11/PA12 | USB D+/D− | Crystal-less USB 2.0 full-speed interface; integrated transceivers and termination resistors |
| PC13–PC15 | RTC/LSE pins | Support 32.768 kHz external crystal for hardware calendar, alarms, and calibration; LSE drives backup domain |
| VBAT | Battery backup supply | Supplies RTC and 32×32-bit backup registers during main power loss; operates down to 1.65 V |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables granular power gating per peripheral domain, reducing active current to 84 µA/MHz and shutdown to 8 nA |
| ART Accelerator™ | Eliminates flash wait states at 80 MHz via 8-KB instruction cache and prefetch buffer, improving deterministic real-time response |
| Batch Acquisition Mode (BAM) | Allows CPU to sleep while peripherals autonomously acquire and process sensor data, minimizing wake cycles |
| Hardware AES engine | Accelerates encryption/decryption of data streams without CPU load, supporting secure firmware updates and telemetry |
| Capacitive touch controller (TSC) | Supports up to 21 channels for touchkey, linear, and rotary sensors with built-in noise immunity and auto-calibration |
| Integrated LCD driver | Drives up to 320 segments (8×40) with internal step-up converter, eliminating external bias supply in portable displays |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition and local anomaly detection in coin-cell-powered wrist-worn devices. IC Role / Device Role / Timing Role: Primary MCU managing analog front-end sampling (ADC @ 5 Msps), real-time filtering (Cortex-M4 FPU), encrypted BLE telemetry (AES), and ultra-low-power scheduling (Stop 2 mode with 4 µs wakeup). Use Value: 1.28 µA Stop 2 current with RTC enables >5-year battery life; integrated op-amp and PGA condition sensor signals without external components. | Use Scenario: Battery-backed gas/water meter with hourly pulse counting, tamper detection, and RF transmission. IC Role / Device Role / Timing Role: System controller handling metrology interface (SDMMC for flow sensor logs), secure data storage (AES-encrypted flash), and LPUART wake-on-event for remote reporting. Use Value: 280 nA Standby-with-RTC ensures decade-scale backup operation; VBAT domain preserves calendar and 32×32-bit registers during main power failure. |
| Industrial HMI Panel | Portable Diagnostic Tool |
Use Scenario: Handheld operator interface with segmented LCD display, tactile buttons, and isolated CAN communication to PLCs. IC Role / Device Role / Timing Role: Display controller (LCD 8×40 with step-up), human interaction processor (TSC for touch keys), and CAN 2.0B node (ISO 11898-1 compliant). Use Value: Integrated LCD driver eliminates external charge pump; 5 V-tolerant GPIOs simplify connection to legacy button matrices and opto-isolators. | Use Scenario: Field-deployable ultrasound or ECG analyzer requiring audio streaming, analog signal chain control, and secure data export. IC Role / Device Role / Timing Role: Audio subsystem manager (SAI interface to codec), analog signal conditioner (dual DACs, op-amp, comparators), and USB FS host for flash drive export. Use Value: Crystal-less USB FS reduces BOM cost and board space; SAI supports I²S/PCM formats for real-time audio capture without external FIFOs. |
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 |
|---|---|---|---|
| STM32L433RCT6 | Same package and pinout; lacks SAI and USB crystal-less capability; 128 KB flash, 40 KB SRAM | Suitable for cost-sensitive designs omitting audio streaming or plug-and-play USB | Select when audio interface and crystal-less USB are unnecessary and lower memory suffices |
| STM32L452RET6 | Same LQFP64 package; adds USB HS (with PHY), 512 KB flash, 160 KB SRAM, no LCD controller | Targeted at higher-performance edge nodes needing larger code footprint and USB host/device flexibility | Choose when expanded memory, USB HS, or absence of LCD simplifies display architecture |
Compared with STM32L433RCT6, the STM32L443RCT6 adds SAI and crystal-less USB - critical for portable audio and rapid device enumeration - while retaining identical power profiles; versus STM32L452RET6, it trades flash/SRAM capacity and USB HS for integrated LCD and lower system-level BOM cost in display-centric designs.
Availability
STM32L443RCT6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial HMI panels, and portable diagnostic tools requiring stable component supply across multi-year production cycles.
Supply support for STM32L443RCT6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong focus on energy efficiency and industrial reliability.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, featuring advanced power gating, hardware accelerators, and mixed-signal integration for battery-operated and energy-harvesting systems.
FAQ
What is the maximum operating temperature rating for STM32L443RCT6?
The STM32L443RCT6 is rated for industrial temperature range: –40 °C to +105 °C. This is confirmed in Section 6.3.1 of DS11421 Rev 6, where "Operating conditions" specify ambient temperature limits for LQFP64 packages with extended grade. It does not support the 125 °C variant offered in some other L443 packages (e.g., UFBGA100).
Does STM32L443RCT6 support crystal-less USB Full-Speed operation?
Yes. The STM32L443RCT6 integrates a USB 2.0 Full-Speed transceiver with built-in clock recovery system (CRS), enabling crystal-less operation. As stated in the datasheet feature list and Section 3.34, it supports LPM (Link Power Management) and BCD (Battery Charging Detection) without requiring an external 48 MHz crystal.
How many capacitive sensing channels does STM32L443RCT6 support?
The STM32L443RCT6 supports up to 21 capacitive sensing channels via its integrated Touch Sensing Controller (TSC). This is explicitly listed in the "Features" section and verified in Table 1 (device features) of DS11421 Rev 6, applicable to all L443 variants including the RCT6 package.
Is the LCD controller capable of driving segment-based displays without external components?
Yes. The integrated LCD controller supports 8×40 or 4×44 segment configurations and includes an internal step-up converter, allowing direct drive of common LCD glass without external voltage boosters or bias generators - confirmed in Section 3.21 and electrical characteristics Table 6.3.25 of DS11421 Rev 6.
STM32L443RCT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 52
- 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:
STM32L443RCT6 FAQ
1.How can I place an order for STM32L443RCT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L443RCT6 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 STM32L443RCT6 reliable?
The price and inventory of STM32L443RCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L443RCT6 is usually 5 days.
3.What payment methods are accepted for STM32L443RCT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L443RCT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L443RCT6?
STM32L443RCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L443RCT6 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 STM32L443RCT6?
For technical support, including STM32L443RCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L443RCT6 requirements.
6.How does Aetrix verify that STM32L443RCT6 is sourced from the original manufacturer or authorized distributors?
All STM32L443RCT6 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 STM32L443RCT6 meets industry standards.
7.What is the process for return or replacement of STM32L443RCT6?
All STM32L443RCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L443RCT6, 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 STM32L443RCT6 part is unused and in its original packaging.
Return procedure for STM32L443RCT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L443RCT6 Tags
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