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STMicroelectronics STM32L443CCY6TR
- Part No.:
- STM32L443CCY6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 49-UFBGA, WLCSP
- Datasheet:
-
STM32L443CCY6TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 49WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:5,399
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Product details
Overview
STM32L443CCY6TR 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 85 °C, and achieves 280 nA Standby with RTC-enabling battery-powered portable medical monitors with integrated display and secure data logging.
For engineers reviewing the STM32L443CCY6TR datasheet, STM32L443CCY6TR pinout, STM32L443CCY6TR application, or STM32L443CCY6TR equivalent, key selection criteria include ultra-low-power mode current (280 nA Standby w/RTC), integrated LCD driver (8×40 segment), dual 12-bit DACs, 12-bit ADC at 5 Msps, and CAN 2.0B interface for sensor fusion in constrained-edge devices.
Technical Context
The STM32L443CCY6TR integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a memory protection unit (MPU) and proprietary code readout protection. Its FlexPowerControl architecture delivers multiple low-power modes-including Stop 2 (1.0 µA), Standby (280 nA with RTC), and Shutdown (8 nA)-with sub-4 µs wake-up latency.
It features dual clock domains: one for system/peripherals (up to 80 MHz via dual PLLs), another for ultra-low-power peripherals (LPTIM, LPUART, RTC). Analog subsystem includes 1x 12-bit ADC (5 Msps, hardware oversampling to 16-bit), 2x 12-bit DACs, 1x op-amp with PGA, and 2x ultra-low-power comparators-all with independent supply domain isolation.
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 floating-point control loops without external coprocessor. |
| Memory | 256 KB flash (single-bank, code readout protected), 64 KB SRAM (16 KB with parity) - supports secure firmware updates and fault-tolerant data buffering. |
| Low-Power Performance | 280 nA Standby with RTC + 32×32-bit backup registers - sustains calendar timekeeping and critical state retention for >10 years on coin cell. |
| Analog Peripherals | 12-bit ADC @ 5 Msps (200 µA/Msps), 2× 12-bit DACs, 1 op-amp with PGA, 2 ultra-low-power comparators - enables high-fidelity sensor signal chain with minimal external components. |
| Connectivity | USB 2.0 FS (crystal-less), CAN 2.0B, 4× USART, LPUART, 3× SPI, 3× I²C, SAI, SDMMC - supports mixed wired/wireless edge node communication with audio and storage capability. |
| Display & Timing | LCD controller (8×40 or 4×44 segments, integrated step-up converter), RTC with HW calendar/alarm/calibration - eliminates external LCD bias generator and timing IC in portable HMI designs. |
| Security | AES-128/256 hardware accelerator, true RNG, 96-bit unique ID, firewall - accelerates encrypted telemetry upload and device identity binding without CPU overhead. |
Pinout & Package
STM32L443CCY6TR uses a 64-pin UFBGA package (7 × 7 mm, 0.5 mm pitch, A019 footprint), optimized for space-constrained portable electronics. Pin functions are validated per ST's DS11421 Rev 6, Section 4 ("Pinouts and pin description") and Table 14 ("STM32L443xx pin definitions").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply / ground | 1.71–3.6 V operation; decoupling required per ST AN4913 for stable low-power mode transitions. |
| VBAT | Backup power input | Supplies RTC and 32×32-bit backup registers during main power loss; accepts 1.65–3.6 V. |
| 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 16 alternate functions including USB, CAN, SAI, LCD segment/common. |
| PF0–PF15 | Additional GPIOs & analog inputs | Includes ADC1_IN[0–18], DAC_OUT1/2, OPAMP non-inverting inputs, TSC channels - enables compact analog front-end integration. |
| OSC_IN / OSC_OUT | HSE crystal oscillator interface | Supports 4–48 MHz external crystal; optional bypass mode for external clock source. |
| LSE_IN / LSE_OUT | 32.768 kHz RTC oscillator | Enables ±20 ppm accuracy RTC operation with external tuning fork crystal; critical for calendar-correct sleep scheduling. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset button or supervisor IC assertion. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Eight low-power modes (Shutdown, Standby, Stop 0/1/2, Sleep, Low-power Run, Run) with configurable voltage scaling - enables dynamic power budgeting across sensor acquisition, processing, and transmission phases. |
| ART Accelerator™ | Zero-wait-state execution from flash at 80 MHz - eliminates external SRAM for code execution while maintaining deterministic real-time response. |
| Integrated LCD controller | Drives up to 320 segments (8×40) with internal step-up converter - removes need for external LCD bias IC and reduces BOM count in wearable displays. |
| Capacitive touch sensing (TSC) | 21-channel controller supporting touchkey, linear, and rotary sensors - enables intuitive UI with <1 µA active current and no external RC network. |
| Batch Acquisition Mode (BAM) | Permits peripheral-triggered ADC/DAC/LCD refresh without CPU wake-up - extends battery life in periodic measurement applications like environmental loggers. |
Applications
| Portable Medical Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Wearable ECG/SpO₂ monitor with segmented LCD, Bluetooth LE telemetry, and 5-year coin-cell operation. IC Role / Device Role / Timing Role: Main application processor, analog front-end controller, and RTC/LCD timing manager. Use Value: 280 nA Standby with RTC preserves calendar and alarm state; integrated 12-bit ADC + DAC enables calibrated analog sensor interfacing without external signal conditioning. |
Use Scenario: Battery-powered gas/water meter with pulse counting, LCD display, and LoRaWAN backhaul. IC Role / Device Role / Timing Role: System-on-chip controller managing metrology, display, secure firmware updates, and low-duty-cycle radio wake-up. Use Value: Hardware AES acceleration secures firmware OTA updates; LPUART + Stop 2 mode (1.0 µA) enables precise wake-up from deep sleep for hourly pulse sampling. |
| Industrial Sensor Node | Audio-Enabled IoT Gateway |
Use Scenario: Wireless vibration/temperature node in predictive maintenance system with local FFT analysis. IC Role / Device Role / Timing Role: Edge AI inference engine, multi-sensor aggregator, and CAN bus gateway to PLC. Use Value: Cortex-M4+FPU executes lightweight neural networks; CAN 2.0B interface enables direct connection to legacy industrial fieldbus without protocol converter. |
Use Scenario: Voice-controlled smart home hub with microphone array, LED indicators, and USB audio playback. IC Role / Device Role / Timing Role: Audio subsystem controller handling I²S/SAI routing, DAC output, and USB audio class enumeration. Use Value: Dual 12-bit DACs drive line-out/headphone outputs; SAI interface supports TDM/I²S with 16/24-bit resolution - eliminates external audio codec in cost-sensitive hubs. |
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 |
|---|---|---|---|
| STM32L433CCY6TR | 192 KB flash, 64 KB SRAM, no USB FS, no LCD controller, same core/peripherals otherwise | Lacks crystal-less USB and integrated LCD - unsuitable for USB-connected or display-integrated designs | Select when display and USB are unnecessary and BOM cost reduction is prioritized over feature headroom. |
| STM32L452CEU6 | 512 KB flash, 160 KB SRAM, USB FS, no LCD, adds DFSDM and more timers | Higher memory and DSP capability but no LCD driver - better for audio preprocessing or complex control, not HMI-centric use cases | Choose when running larger RTOS stacks or requiring digital filter offload (DFSDM) without display requirements. |
Compared with STM32L433CCY6TR, the STM32L443CCY6TR adds essential display and USB functionality at identical package size and power profile; versus STM32L452CEU6, it trades memory headroom for integrated LCD and lower system-level component count in HMI applications.
Availability
STM32L443CCY6TR is available at Aetrix Electronics and suitable for portable medical monitors, smart utility meters, industrial sensor nodes, and audio-enabled IoT gateways requiring stable component supply across multi-year production cycles.
Supply support for STM32L443CCY6TR 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 since 1987.
The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich analog integration, and secure firmware execution-specifically for portable healthcare, smart metering, and industrial IoT endpoints.
FAQ
What is the maximum operating temperature range for STM32L443CCY6TR?
The STM32L443CCY6TR is rated for industrial operation from -40 °C to +85 °C, as confirmed in DS11421 Rev 6 Section 6.3.1. This range applies to all operating modes including Run, Stop, and Standby, and is validated with the UFBGA64 package (A019) under JEDEC JESD47 reliability testing.
Does STM32L443CCY6TR support crystal-less USB Full-Speed operation?
Yes. The device integrates a USB 2.0 Full-Speed PHY with internal clock recovery system (CRS), enabling crystal-less USB operation per Section 3.34 of DS11421 Rev 6. It uses the 48 MHz internal oscillator trimmed by LSE, eliminating the need for an external 48 MHz crystal or oscillator in USB-connected designs.
How many capacitive sensing channels does the TSC support on this part?
The Touch Sensing Controller (TSC) supports up to 21 capacitive sensing channels, as specified in Section 3.20 and Table 1 of DS11421 Rev 6. These channels can be configured for touchkey, linear touchpad, or rotary touch sensor implementations without external components.
Is the 256 KB flash memory single-bank or dual-bank, and what protection features does it offer?
The flash is single-bank (256 KB), with proprietary code readout protection (RDP) at three levels (Level 0/1/2) and write protection per 2-KB sector. Readout protection Level 1 prevents debug access and flash readout while allowing firmware updates; Level 2 permanently locks debug and readout, as detailed in Section 3.4 and Table 2 of DS11421 Rev 6.
STM32L443CCY6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 49-UFBGA, WLCSP
- 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:
- 39
- 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 10x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L443CCY6TR FAQ
1.How can I place an order for STM32L443CCY6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L443CCY6TR 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 STM32L443CCY6TR reliable?
The price and inventory of STM32L443CCY6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L443CCY6TR is usually 5 days.
3.What payment methods are accepted for STM32L443CCY6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L443CCY6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L443CCY6TR?
STM32L443CCY6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L443CCY6TR 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 STM32L443CCY6TR?
For technical support, including STM32L443CCY6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L443CCY6TR requirements.
6.How does Aetrix verify that STM32L443CCY6TR is sourced from the original manufacturer or authorized distributors?
All STM32L443CCY6TR 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 STM32L443CCY6TR meets industry standards.
7.What is the process for return or replacement of STM32L443CCY6TR?
All STM32L443CCY6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L443CCY6TR, 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 STM32L443CCY6TR part is unused and in its original packaging.
Return procedure for STM32L443CCY6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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