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STMicroelectronics STM32L433RCY3TR
- Part No.:
- STM32L433RCY3TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA, WLCSP
- Datasheet:
-
STM32L433RCY3TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,774
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Product details
Overview
STM32L433RCY3TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, delivering 100 DMIPS at 80 MHz, 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 sensor nodes requiring sub-µA standby operation and high analog integration.
For engineers reviewing the STM32L433RCY3TR datasheet, STM32L433RCY3TR pinout, STM32L433RCY3TR application, or STM32L433RCY3TR equivalent, key selection criteria include its 28 nA Standby mode (5 wakeup pins), 36 µA/MHz run efficiency in SMPS mode, 12-bit ADC with 5 Msps sampling, dual 12-bit DACs, and UFBGA64 package compatibility with space-constrained PCB layouts.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash memory, paired with a Memory Protection Unit (MPU) for secure embedded applications. Its FlexPowerControl architecture supports dynamic voltage scaling and multiple low-power modes including Stop 2 (1.28 µA with RTC) and Shutdown (8 nA).
Core peripherals include a hardware calendar RTC, LCD controller supporting 8×40 segments with integrated step-up converter, and 21-channel capacitive touch sensing. Analog subsystem features one operational amplifier with programmable gain amplifier (PGA), two ultra-low-power comparators, and independent analog supply domains for noise isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max frequency, 100 DMIPS performance |
| Memory | 256 KB single-bank Flash (with readout protection), 64 KB SRAM (16 KB with hardware parity) |
| Power Consumption | 36 µA/MHz in SMPS-run mode; 28 nA Standby mode with RTC enabled |
| Analog Peripherals | 1× 12-bit ADC (5 Msps, hardware oversampling up to 16-bit), 2× 12-bit DACs, 1× OPAMP with PGA, 2× comparators |
| Connectivity | USB 2.0 FS (crystal-less), CAN 2.0B, 4× USART, 1× LPUART, 3× I²C, 3× SPI, Quad-SPI, SAI, SWPMI, SDMMC |
| Package | UFBGA64 (5 × 5 mm, 0.5 mm pitch, A019 marking), RoHS-compliant ECOPACK2 |
| Operating Range | 1.71–3.6 V supply; -40 °C to +105 °C ambient temperature grade |
Pinout & Package
STM32L433RCY3TR is housed in a 64-ball Ultra-Fine-Pitch Ball Grid Array (UFBGA64) package with 0.5 mm ball pitch and 5 mm × 5 mm body size, optimized for compact, high-density PCB designs. Pin functions are validated per STMicroelectronics DS11449 Rev 8, Section 4 "Pinouts and pin description".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Main, analog, and I/O power supplies | Independent domains enable noise-sensitive analog operation and flexible power sequencing |
| VSS, VSSA, VSSIO2 | Ground returns | Separate analog/digital grounds reduce coupling noise in mixed-signal operation |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/Os | Up to 83 fast I/Os; most 5 V-tolerant for interfacing with legacy logic |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset button or supervisor IC |
| BOOT0 | Boot mode selection | Configures boot source (system memory, main flash, or SRAM) at power-on reset |
| SWDIO / SWCLK | Serial Wire Debug interface | 2-pin debug port supporting full SWD protocol for programming and real-time trace |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 8 nA Shutdown mode and 4 µs wake-up from Stop mode for rapid event response |
| ART Accelerator™ | Eliminates flash wait states at 80 MHz, improving deterministic real-time latency and code density |
| Integrated LCD controller | Drives up to 8×40 segments with built-in step-up converter-no external bias generator required |
| Capacitive touch sensing (TSC) | 21-channel hardware-accelerated touch engine supporting touchkey, linear, and rotary sensors |
| True Random Number Generator (RNG) | FIPS-compliant entropy source for cryptographic key generation and secure boot operations |
Applications
| Wearable Health Monitor | Smart Gas Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition and local processing in wrist-worn devices with multi-day battery life. IC Role / Device Role / Timing Role: Primary application processor managing analog front-end (ADC/DAC/OPAMP), real-time sensor fusion, and Bluetooth LE communication via USART/LPUART. Use Value: 280 nA Standby with RTC enables accurate time-stamped data logging; 12-bit ADC oversampling ensures clinical-grade signal resolution. | Use Scenario: Battery-operated industrial air quality monitor detecting CO, NO₂, and VOCs using electrochemical and MOS sensors. IC Role / Device Role / Timing Role: System-on-chip controller handling sensor biasing, analog conditioning, gas concentration calculation, and LoRaWAN transmission via UART/SPI. Use Value: Dual 12-bit DACs generate precise sensor excitation voltages; 36 µA/MHz SMPS-run efficiency extends 10-year field deployment on primary lithium cells. |
| Programmable Logic Controller (PLC) Edge Module | Energy-Harvesting IoT Endpoint |
Use Scenario: Compact DIN-rail-mounted edge node performing discrete I/O control, analog loop monitoring, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Real-time deterministic controller executing ladder logic via TIM1 advanced timer and GPIO interrupt-driven I/O scanning. Use Value: 1.71–3.6 V wide supply range accommodates 24 V DC industrial rails with local LDO/SMPS regulation; CAN 2.0B interface enables fieldbus interoperability. | Use Scenario: Solar- or thermal-harvested environmental sensor collecting temperature, humidity, and light data for predictive maintenance. IC Role / Device Role / Timing Role: Ultra-low-power system manager coordinating energy harvesting PMIC control, sensor polling, and scheduled BLE advertising bursts. Use Value: Batch Acquisition Mode (BAM) reduces active time during sensor reads; 200 nA VBAT mode sustains RTC and backup registers during energy droughts. |
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 | Lacks LCD and TSC; suited for non-display sensor hubs with smaller footprint | Select when display functionality is unnecessary and board area is constrained to < 4 mm² |
| STM32L476RGY6 | 1 MB Flash, 128 KB SRAM, higher temp grade (−40 to +125 °C), same UFBGA64 | Higher memory and extended temperature support for automotive cabin modules | Choose for applications requiring larger firmware image or extended thermal robustness |
Compared with STM32L433RCY3TR, STM32L432KCU6 trades LCD and capacitive touch capability for reduced cost and size, while STM32L476RGY6 provides greater memory headroom and wider temperature tolerance-both retain identical peripheral sets except for LCD and TSC exclusions or extensions.
Availability
STM32L433RCY3TR is available at Aetrix Electronics and suitable for wearable health monitors, smart gas sensor nodes, programmable logic controller edge modules, and energy-harvesting IoT endpoints requiring stable component supply across multi-year production cycles.
Supply support for STM32L433RCY3TR 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 analog components for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-microwatt, integrating advanced power gating, adaptive voltage scaling, and rich analog/mixed-signal peripherals for intelligent edge devices.
FAQ
What is the maximum operating frequency and core type of the STM32L433RCY3TR?
The STM32L433RCY3TR features an Arm Cortex-M4 core with floating-point unit (FPU), operating at up to 80 MHz. It delivers 100 DMIPS and supports DSP instructions. The ART Accelerator™ enables zero-wait-state execution from flash memory, ensuring deterministic real-time performance without external cache.
Does the STM32L433RCY3TR support external SMPS and what power savings does it enable?
Yes, the STM32L433RCY3TR supports external switched-mode power supply (SMPS) via dedicated VDD12 and VDD12_IO pins. In SMPS-run mode, it achieves 36 µA/MHz-nearly half the current draw of LDO-run mode (84 µA/MHz)-significantly extending battery life in continuous-operation applications like portable medical devices.
How many capacitive sensing channels does the STM32L433RCY3TR provide, and what sensor types are supported?
The device integrates a hardware Touch Sensing Controller (TSC) with up to 21 capacitive sensing channels. It natively supports touchkey, linear touch sliders, and rotary touch wheels without external components. The TSC operates independently in low-power modes, enabling wake-up from Stop mode via touch events with minimal power overhead.
What package variant is used for the STM32L433RCY3TR, and what are its key mechanical attributes?
The STM32L433RCY3TR uses the UFBGA64 (A019) package: a 5 mm × 5 mm ultra-fine-pitch ball grid array with 64 solder balls arranged in a 9×9 grid (edge balls omitted). It has 0.5 mm ball pitch, 0.25 mm ball diameter, and complies with JEDEC MO-220 and ECOPACK2 environmental standards.
STM32L433RCY3TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L433RCY3TR FAQ
1.How can I place an order for STM32L433RCY3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L433RCY3TR 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 STM32L433RCY3TR reliable?
The price and inventory of STM32L433RCY3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L433RCY3TR is usually 5 days.
3.What payment methods are accepted for STM32L433RCY3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L433RCY3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L433RCY3TR?
STM32L433RCY3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L433RCY3TR 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 STM32L433RCY3TR?
For technical support, including STM32L433RCY3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L433RCY3TR requirements.
6.How does Aetrix verify that STM32L433RCY3TR is sourced from the original manufacturer or authorized distributors?
All STM32L433RCY3TR 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 STM32L433RCY3TR meets industry standards.
7.What is the process for return or replacement of STM32L433RCY3TR?
All STM32L433RCY3TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L433RCY3TR, 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 STM32L433RCY3TR part is unused and in its original packaging.
Return procedure for STM32L433RCY3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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