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STMicroelectronics STM32L443RCT6TR
- Part No.:
- STM32L443RCT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L443RCT6TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:345
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Product details
Overview
STM32L443RCT6TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 256 KB flash, 64 KB SRAM, USB FS, LCD controller, and hardware AES encryption. It operates up to 80 MHz (100 DMIPS), supports -40 °C to 105 °C, and achieves 280 nA Standby with RTC-enabling battery-powered portable medical monitors with real-time display and secure data logging.
For engineers reviewing the STM32L443RCT6TR datasheet, STM32L443RCT6TR pinout, STM32L443RCT6TR application, or STM32L443RCT6TR equivalent, key selection criteria include its 80 MHz Cortex-M4+FPU performance, 256 KB flash with readout protection, 280 nA RTC-enabled Standby mode, integrated LCD 8×40 driver with step-up converter, and dual 12-bit DACs for analog output in space-constrained IoT edge nodes.
Technical Context
This MCU integrates an Adaptive Real-Time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 80 MHz, alongside a dual-voltage domain architecture separating analog peripherals (12-bit ADC @ 5 Msps, 2× DAC, OPAMP, 2× comparators) from digital logic. Its FlexPowerControl system delivers granular low-power mode control-including Stop 2 (1.28 µA with RTC) and Shutdown (8 nA with 5 wakeup pins).
The device features a full interconnect matrix for concurrent peripheral access, two PLLs (one dedicated to USB/audio), and a rich communication suite: USB 2.0 FS (crystal-less), CAN 2.0B, SAI, 4× USART, LPUART, 3× SPI, Quad SPI, and SWPMI-supporting mixed-signal sensor fusion and secure firmware updates in resource-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, 80 MHz max frequency (100 DMIPS) |
| Memory | 256 KB single-bank Flash (with proprietary code readout protection), 64 KB SRAM (16 KB with hardware parity) |
| Low-Power Performance | 280 nA Standby with RTC; 1.28 µA Stop 2 with RTC; 84 µA/MHz Run mode |
| Analog Peripherals | 1× 12-bit ADC (5 Msps, hardware oversampling to 16-bit), 2× 12-bit DACs, 1× OPAMP with PGA, 2× ultra-low-power comparators |
| Display & Security | LCD controller supporting 8×40 or 4×44 segments with integrated step-up converter; AES-128/256 hardware accelerator |
| Communication | USB 2.0 FS (crystal-less), CAN 2.0B, SAI, 4× USART, LPUART, 3× SPI + Quad SPI, I²C FM+, SWPMI, SDMMC |
| Package & Temp | LQFP64 (10 × 10 mm), ECOPACK2-compliant; industrial temperature range: -40 °C to +105 °C |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), 64-pin quad flat pack with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual-domain power pins: VDD powers digital core and I/Os (1.71–3.6 V); VSS provides reference return path |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/Os | Up to 83 fast I/Os (most 5 V-tolerant); support multiple alternate functions including USB, CAN, SAI, and LCD segment/com drivers |
| PF0–PF15 | Additional GPIOs & LCD pins | Provide extra segment and common lines for LCD 8×40 configuration; also support analog inputs and timer channels |
| VBAT | Backup power supply | Supplies RTC and 32×32-bit backup registers during main power loss; enables calendar retention at 200 nA |
| NRST | Reset input | Active-low reset pin with internal pull-up; accepts external reset pulses or watchdog-induced reset |
| BOOT0 | Boot mode selection | High at power-up selects system memory boot (for bootloader); low selects user flash memory |
| OSC_IN / OSC_OUT | HSE crystal interface | Supports 4–48 MHz external crystal for precise system clock; optional bypass mode for external clock source |
| RTC_OUT / RTC_IN | RTC oscillator interface | Connects 32.768 kHz crystal for hardware calendar and alarm functions with ±20 ppm accuracy |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables 0-wait-state execution from flash at 80 MHz-eliminating cache misses in deterministic real-time control loops |
| FlexPowerControl | Eight low-power modes including Shutdown (8 nA), Standby (280 nA w/ RTC), and Stop 2 (1.28 µA w/ RTC)-optimized for intermittent sensing |
| Integrated LCD Driver | Drives up to 320 segments (8×40) with built-in step-up converter-reduces BOM count and PCB area in portable displays |
| Hardware AES Engine | Accelerates AES-128/256 encryption/decryption without CPU intervention-critical for secure OTA firmware updates |
| Capacitive Touch Sensing | 21-channel TSC supporting touchkey, linear, and rotary sensors-enables intuitive HMI without external ICs |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG and SpO₂ acquisition with local display and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Main application processor executing sensor fusion algorithms, driving segmented LCD, managing USB/SAI audio alerts, and securing health data via AES. Use Value: 280 nA Standby with RTC maintains timekeeping between periodic measurements; 12-bit ADC oversampling ensures clinical-grade signal fidelity at <5 µA per sample. | Use Scenario: Battery-powered gas/water meter with pulse counting, LCD display, and LoRaWAN backhaul. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC, LCD refresh, tamper detection via GPIO interrupts, and secure firmware updates over LoRa. Use Value: 8 nA Shutdown mode extends 10-year battery life; integrated LCD driver eliminates external bias generator; CAN interface supports legacy AMR infrastructure. |
| Industrial Sensor Node | Portable Audio Recorder |
Use Scenario: Wireless vibration/temperature node in predictive maintenance systems with edge FFT processing. IC Role / Device Role / Timing Role: Real-time signal processor running CMSIS-DSP FFT on ADC samples, scheduling wake-ups via LPTIM, and transmitting via UART-to-LoRa bridge. Use Value: 80 MHz Cortex-M4+FPU delivers >300 CoreMark® for floating-point FFT; 4 µs wakeup from Stop mode minimizes latency in event-triggered sampling. | Use Scenario: Handheld voice recorder with line-in, microphone preamp, and stereo playback via headphones. IC Role / Device Role / Timing Role: Audio SoC handling I²S/SAI interface, 12-bit DAC output with sample-and-hold, OPAMP-based mic bias, and USB MSC mass storage. Use Value: Dual 12-bit DACs enable simultaneous left/right channel playback; SAI supports TDM/I²S protocols; hardware AES secures recorded files. |
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 |
|---|---|---|---|
| STM32L433RCT6P | Same LQFP64 package and core, but 128 KB Flash, no USB FS, no LCD controller, no AES accelerator | Suitable for cost-sensitive sensor nodes without display or secure comms | Select when display, USB, or hardware crypto are unnecessary-reduces BOM cost by ~15% |
| STM32L476RGY6TR | Higher-end variant: 1 MB Flash, 128 KB SRAM, USB HS, Chrom-ART accelerator, no LCD driver | Targeted at complex GUI-based HMI with external display controller | Choose for advanced graphics or high-throughput USB host applications-requires larger PCB footprint (UFQFPN64) |
Compared with STM32L433RCT6P, the STM32L443RCT6TR adds LCD, USB FS, and AES-justifying its use in secure, display-equipped edge devices; versus STM32L476RGY6TR, it trades Flash/SRAM capacity for integrated display support and lower static power, making it optimal for compact, battery-critical designs.
Availability
STM32L443RCT6TR is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial sensor nodes, and portable audio recorders requiring stable component supply across extended product lifecycles.
Supply support for STM32L443RCT6TR 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-milliwatt, integrating advanced power gating, flexible clock trees, and security accelerators for battery-operated and energy-harvesting systems.
FAQ
What is the maximum operating frequency and associated performance metric?
The STM32L443RCT6TR runs at up to 80 MHz with its Arm Cortex-M4 core featuring FPU and DSP extensions. It delivers 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz), validated under full ART Accelerator™ operation with flash execution. This performance is sustained across the full industrial temperature range (-40 °C to +105 °C) with voltage scaling enabled.
Does this MCU support crystal-less USB Full-Speed operation?
Yes, the STM32L443RCT6TR integrates a USB 2.0 Full-Speed PHY with crystal-less operation using its internal 48 MHz RC oscillator, calibrated by the 32.768 kHz LSE. This eliminates the need for an external USB crystal, reducing BOM cost and PCB area while maintaining USB compliance for device enumeration and data transfer at 12 Mbps.
How many low-power modes does the STM32L443RCT6TR support, and what is the lowest current draw?
The device supports eight low-power modes, including Shutdown (8 nA), Standby (28 nA without RTC, 280 nA with RTC), and Stop 2 (1.28 µA with RTC). The 8 nA Shutdown mode retains only VBAT-supplied RTC and backup registers-verified per DS11421 Rev 6 Section 3.9.4-and is activated via PWR_CR4 register with all clocks gated and regulators disabled.
Is the LCD controller capable of driving segment-based displays without external components?
Yes, the integrated LCD controller supports up to 8×40 or 4×44 segments with an on-chip step-up converter, eliminating the need for external charge pumps or bias generators. It operates from a single 3.3 V supply and includes software-programmable contrast control, frame frequency tuning, and blinking support-fully documented in Section 3.21 of the datasheet.
STM32L443RCT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32L4
- Packaging:
- Tape & Reel (TR)
- 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:
STM32L443RCT6TR FAQ
1.How can I place an order for STM32L443RCT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L443RCT6TR 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 STM32L443RCT6TR reliable?
The price and inventory of STM32L443RCT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L443RCT6TR is usually 5 days.
3.What payment methods are accepted for STM32L443RCT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L443RCT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L443RCT6TR?
STM32L443RCT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L443RCT6TR 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 STM32L443RCT6TR?
For technical support, including STM32L443RCT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L443RCT6TR requirements.
6.How does Aetrix verify that STM32L443RCT6TR is sourced from the original manufacturer or authorized distributors?
All STM32L443RCT6TR 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 STM32L443RCT6TR meets industry standards.
7.What is the process for return or replacement of STM32L443RCT6TR?
All STM32L443RCT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L443RCT6TR, 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 STM32L443RCT6TR part is unused and in its original packaging.
Return procedure for STM32L443RCT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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