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STMicroelectronics STM32L433CCY3TR
- Part No.:
- STM32L433CCY3TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 49-UFBGA, WLCSP
- Datasheet:
-
STM32L433CCY3TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 49WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,627
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Product details
Overview
STM32L433CCY3TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 256 KB flash, 64 KB SRAM, USB FS, LCD controller, and integrated SMPS support. It targets battery-powered portable instrumentation, wearable health monitors, and smart sensors requiring sub-µA standby operation and high analog integration.
For engineers reviewing the STM32L433CCY3TR datasheet, STM32L433CCY3TR pinout, STM32L433CCY3TR application, or STM32L433CCY3TR equivalent, key selection criteria include its 28 nA Standby mode, 36 µA/MHz SMPS-enabled run efficiency, 12-bit 5 Msps ADC with hardware oversampling, and UFBGA64 package compatibility with space-constrained PCB layouts.
Technical Context
This MCU integrates the ART Accelerator™ for zero-wait-state execution from flash, enabling deterministic real-time response at 80 MHz. Its FlexPowerControl architecture supports multiple low-power modes-including 28 nA Standby with RTC and 8 nA Shutdown-with five dedicated wakeup pins and 4 µs wake-up latency from Stop mode.
The device features dual PLLs (system/USB/audio), a 12-bit ADC with 16-bit effective resolution via hardware oversampling, two 12-bit DACs, one operational amplifier with programmable gain, and two ultra-low-power comparators-all supplied from independent analog rails for noise isolation and precision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, delivering 100 DMIPS @ 80 MHz for real-time signal processing in sensor fusion or motor control. |
| Memory | 256 KB single-bank Flash (with readout protection) + 64 KB SRAM (16 KB with hardware parity), enabling secure firmware storage and robust data buffering. |
| Power Efficiency | 36 µA/MHz in SMPS mode @ 3.3 V - reduces system-level power supply burden and extends battery life in always-on edge nodes. |
| Analog Peripherals | 1× 12-bit 5 Msps ADC (200 µA/Msps), 2× 12-bit DACs, 1× OPAMP with PGA, 2× comparators - supports precision analog front-end design without external signal conditioning. |
| Low-Power Modes | 28 nA Standby with RTC, 8 nA Shutdown (5 wakeup pins), 1.0 µA Stop 2 - enables multi-year operation on coin-cell batteries in IoT endpoints. |
| Connectivity | USB 2.0 FS (crystal-less), CAN 2.0B, 4× USART, 3× I²C, 3× SPI, LPUART, SAI, SWPMI - provides flexible wired interface options for industrial telemetry and audio peripherals. |
| LCD Driver | Supports 8×40 or 4×44 segments with integrated step-up converter - eliminates external bias circuitry for segment LCD displays in medical or metering devices. |
Pinout & Package
STM32L433CCY3TR is housed in a 64-ball UFBGA package (7 × 7 mm, 0.5 mm pitch), optimized for compact, high-density PCB layouts in portable electronics. The package supports reflow soldering and meets ECOPACK2 environmental compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main digital supply | 1.71–3.6 V input; powers core, memory, and digital I/O; requires local decoupling for noise immunity. |
| VSS | Digital ground | Reference return path for digital circuits; must be connected to low-impedance ground plane. |
| VDDA | Analog supply | Separate 1.71–3.6 V rail for ADC/DAC/OPAMP; improves SNR by isolating analog noise sources. |
| VSSA | Analog ground | Dedicated analog reference; isolated from digital ground to prevent coupling of switching noise into sensitive analog paths. |
| PA0–PA15 | General-purpose I/O | 5 V-tolerant GPIOs supporting multiple alternate functions including ADC1_IN0, TIM2_CH1, USART2_TX - enables flexible peripheral mapping. |
| PC13–PC15 | RTC/LSE pins | Support 32.768 kHz crystal connection for hardware calendar and alarm functions; PC13 also serves as tamper/wakeup pin. |
| PD0–PD2 | OSC_IN/OSC_OUT/LSE | Crystal oscillator inputs for main 4–48 MHz clock source and low-speed RTC crystal; require precise load capacitance matching. |
| VBAT | Battery backup supply | Accepts 1.65–3.6 V to maintain RTC and 32×32-bit backup registers during main power loss - critical for data retention in power-fail scenarios. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 8 nA Shutdown and 28 nA Standby with RTC - extends battery life in maintenance-free field deployments. |
| ART Accelerator™ | Eliminates flash wait states at 80 MHz, ensuring deterministic interrupt latency and efficient code execution without SRAM shadowing. |
| Integrated SMPS support | Reduces active-mode current to 36 µA/MHz vs. 84 µA/MHz in LDO mode - lowers thermal load and enables smaller DC/DC solutions. |
| Capacitive touch sensing (TSC) | 21-channel controller supporting touchkey, linear, and rotary sensors - replaces mechanical buttons with robust, sealed user interfaces. |
| True random number generator (RNG) | FIPS-compliant entropy source for secure key generation in TLS handshakes or firmware updates - essential for certified IoT security stacks. |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition and local preprocessing in wrist-worn devices powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary MCU executing sensor fusion algorithms, managing LCD display, and handling BLE communication via UART-to-radio bridge. Use Value: 280 nA Standby with RTC ensures accurate time-stamped measurements across multi-week battery cycles without external real-time clock IC. | Use Scenario: Tamper-resistant electricity meter with pulse counting, tariff switching, and secure firmware updates over PLC or RF link. IC Role / Device Role / Timing Role: System controller interfacing with metrology ADC, EEPROM, LCD, and secure bootloader; RTC maintains billing calendar during mains outage. Use Value: VBAT-powered RTC + 32×32-bit backup registers retain tariff tables and consumption logs for >10 years without supercapacitor or rechargeable backup. |
| Portable Gas Detector | Industrial HMI Panel |
Use Scenario: Battery-operated handheld unit detecting CO/H₂S with electrochemical sensors, audible alarm, and OLED display. IC Role / Device Role / Timing Role: Analog front-end manager (ADC, OPAMP, comparators), alarm sequencer, and display driver with integrated step-up converter. Use Value: Single-chip analog integration eliminates 4+ external components while 12-bit ADC oversampling achieves <1% gas concentration measurement error. | Use Scenario: DIN-rail mounted panel with 4×44-segment LCD, pushbutton interface, and Modbus RTU communication over RS-485. IC Role / Device Role / Timing Role: Human-machine interface controller handling touch sensing, LCD refresh, serial protocol stack, and watchdog supervision. Use Value: Integrated LCD controller with internal boost eliminates external charge pump IC, reducing BOM cost and board area by 35% vs. discrete solution. |
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, no LCD controller, UQFN32 package | Suitable for compact sensor nodes without display; lacks TSC and LCD but retains same power profile | Select when display/touch functionality is unnecessary and board space is extremely constrained. |
| STM32L476RGY6 | 1 MB Flash, 128 KB SRAM, full-speed USB + OTG, higher temp grade (−40°C to 105°C) | Targeted at industrial gateways requiring larger code footprint and extended temperature operation | Choose when firmware complexity exceeds 256 KB or ambient operating temperature exceeds 85°C. |
Compared with STM32L433CCY3TR, the L432 offers reduced memory and no LCD/TSC for minimal footprint, while the L476 provides double memory and wider temperature range at higher power cost - making the L433 optimal for display-equipped, battery-critical applications within commercial temperature limits.
Availability
STM32L433CCY3TR is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, portable gas detectors, and industrial HMI panels requiring stable component supply and long-term lifecycle assurance.
Supply support for STM32L433CCY3TR 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 high performance-per-milliwatt, integrating advanced power gating, analog peripherals, and security features for battery-operated edge devices.
FAQ
What is the maximum operating frequency and corresponding performance metric?
The STM32L433CCY3TR operates at up to 80 MHz with an Arm Cortex-M4 core featuring FPU and DSP extensions, achieving 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz). This performance level supports real-time FFT-based vibration analysis or sensor fusion algorithms in resource-constrained edge nodes without external coprocessors.
Does this MCU support external SMPS integration, and what is the power savings benefit?
Yes, the STM32L433CCY3TR supports external SMPS via dedicated VDD12 and VDD12_IO pins. In SMPS mode, active current drops to 36 µA/MHz at 3.3 V - a 57% reduction versus 84 µA/MHz in LDO mode - directly lowering thermal dissipation and extending battery runtime in continuous-sensing applications.
How many capacitive sensing channels does the TSC support, and what configurations are enabled?
The Touch Sensing Controller (TSC) supports up to 21 capacitive sensing channels, configurable for touchkey, linear touchpad, or rotary touch sensor topologies. It includes built-in charge transfer measurement, spread spectrum modulation, and hardware-accelerated baseline tracking - enabling robust proximity detection even under wet or noisy environmental conditions.
What LCD segment configurations are supported, and is external bias required?
The integrated LCD controller supports either 8×40 or 4×44 segment configurations with an on-chip step-up converter, eliminating the need for external bias voltage generation. This allows direct drive of common LCD glass types used in medical instruments and utility meters while reducing BOM count and PCB layout complexity.
STM32L433CCY3TR 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L433CCY3TR FAQ
1.How can I place an order for STM32L433CCY3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L433CCY3TR 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 STM32L433CCY3TR reliable?
The price and inventory of STM32L433CCY3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L433CCY3TR is usually 5 days.
3.What payment methods are accepted for STM32L433CCY3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L433CCY3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L433CCY3TR?
STM32L433CCY3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L433CCY3TR 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 STM32L433CCY3TR?
For technical support, including STM32L433CCY3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L433CCY3TR requirements.
6.How does Aetrix verify that STM32L433CCY3TR is sourced from the original manufacturer or authorized distributors?
All STM32L433CCY3TR 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 STM32L433CCY3TR meets industry standards.
7.What is the process for return or replacement of STM32L433CCY3TR?
All STM32L433CCY3TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L433CCY3TR, 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 STM32L433CCY3TR part is unused and in its original packaging.
Return procedure for STM32L433CCY3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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