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STMicroelectronics STM32L433RCT6
- Part No.:
- STM32L433RCT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L433RCT6.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,815
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Product details
Overview
STM32L433RCT6 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 IoT sensors, portable medical devices, and smart meters requiring extended runtime and integrated analog peripherals.
For engineers reviewing the STM32L433RCT6 datasheet, STM32L433RCT6 pinout, STM32L433RCT6 application, or STM32L433RCT6 equivalent, key selection criteria include its 36 µA/MHz SMPS-enabled run mode, 8 nA shutdown current, 12-bit ADC with 5 Msps sampling, dual DAC channels, and LQFP64 package compatibility with legacy STM32L4 designs.
Technical Context
This MCU implements the Adaptive Real-time Accelerator (ART™) for zero-wait-state execution from flash at 80 MHz and integrates a dual-voltage domain architecture supporting external SMPS (VDD12 = 1.05–1.15 V) to achieve 36 µA/MHz active power efficiency. Its interconnect matrix enables concurrent peripheral access without bus contention.
The device embeds a full-featured low-power analog subsystem: one 12-bit ADC (5 Msps, hardware oversampling up to 16-bit), two 12-bit DACs, one op-amp with programmable gain amplifier (PGA), and two ultra-low-power comparators - all supplied from an independent VDDA rail for noise isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions; enables real-time signal processing in sensor fusion and motor control. |
| Max Clock Frequency | 80 MHz; delivers 100 DMIPS and 273.55 CoreMark® for responsive embedded control. |
| Flash / SRAM | 256 KB single-bank flash with readout protection; 64 KB SRAM (16 KB with parity) for secure, reliable code/data storage. |
| Ultra-Low-Power Modes | 8 nA shutdown, 28 nA standby, 1.28 µA standby+RTC, 84 µA/MHz (LDO) or 36 µA/MHz (SMPS) run mode - critical for multi-year battery life. |
| Analog Peripherals | 1× 12-bit 5 Msps ADC (200 µA/Msps), 2× 12-bit DACs, 1× op-amp with PGA, 2× comparators - supports closed-loop sensing and actuation. |
| Communication Interfaces | USB 2.0 FS (crystal-less), 4× USART, 1× LPUART, 3× I²C, 3× SPI, 1× SAI, CAN 2.0B, SDMMC - enables wired/wireless connectivity and audio I/O. |
| LCD Controller | Supports 8×40 or 4×44 segments with integrated step-up converter - eliminates external bias supply for segment LCDs. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Core logic and I/O domain (1.71–3.6 V); decoupling required per datasheet layout guidelines. |
| VDDA, VSSA | Analog power and ground | Independent 1.62–3.6 V supply for ADC/DAC/OPAMP; mandatory separation from digital rails for <1 LSB INL error. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, etc. | General-purpose I/Os | Up to 83 fast I/Os; most 5 V-tolerant - simplifies level-shifting in mixed-voltage systems. |
| PA11/PA12 | USB D+/D− | Crystal-less USB FS interface; internal transceivers eliminate external PHY and oscillator. |
| PC13 | RTC_OUT / LSE_OUT | Dedicated 32 kHz crystal output for RTC calibration and low-power timekeeping. |
| PF0–PF1 | SMPS_EN / SMPS_VOUT | Control and feedback signals for external SMPS regulator - enables ultra-efficient power delivery. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables dynamic voltage/frequency scaling across 7 low-power modes - reduces energy per task by >40% vs fixed-VDD operation. |
| ART Accelerator™ | Eliminates flash wait states at 80 MHz, enabling deterministic real-time response without SRAM code relocation. |
| Batch Acquisition Mode (BAM) | Allows CPU to sleep while peripherals autonomously acquire sensor data - cuts average system current by up to 70% in periodic sensing. |
| Capacitive Touch Sensing (TSC) | 21-channel hardware-accelerated touch controller - supports touchkey, slider, and rotary gesture detection without CPU overhead. |
| True Random Number Generator (RNG) | FIPS-compliant entropy source for secure key generation in TLS/Bluetooth LE stack implementations. |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG/PPG acquisition with Bluetooth LE telemetry and OLED display. IC Role / Device Role / Timing Role: Main application processor, analog front-end controller, and USB/LPUART communication hub. Use Value: 8 nA shutdown and BAM reduce average current to <1 µA between measurements; integrated op-amp and ADC enable single-chip analog signal conditioning. | Use Scenario: Battery-backed electricity meter with tamper detection, LCD display, and PLC/RF communication. IC Role / Device Role / Timing Role: System-on-chip controller managing metrology ADC, LCD driver, RTC calendar, and secure firmware updates. Use Value: 280 nA standby+RTC ensures >10-year battery life; LCD controller drives 4×44 segments without external bias IC; 96-bit UID enables secure device identity. |
| Industrial Sensor Node | Portable Diagnostic Device |
Use Scenario: Wireless vibration/temperature node with CAN bus gateway and local data logging. IC Role / Device Role / Timing Role: Edge AI inference accelerator, CAN 2.0B controller, and SDMMC host for microSD logging. Use Value: Cortex-M4+FPU executes lightweight ML models (e.g., anomaly detection); CAN interface connects to legacy factory networks; 256 KB flash stores firmware + OTA update image. | Use Scenario: Handheld ultrasound probe with analog beamforming, battery charging, and USB-C host interface. IC Role / Device Role / Timing Role: High-precision timing generator, dual DAC waveform synthesizer, and USB device controller. Use Value: Dual 12-bit DACs generate synchronized excitation waveforms; USB FS supports crystal-less enumeration for plug-and-play diagnostics; 1.28 µA standby+RTC preserves state during transport. |
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, UFBGA32 package; no LCD controller or SMPS support. | Suitable for compact, cost-sensitive sensor nodes without display or high analog integration. | Select when footprint and BOM count are prioritized over display/analog capability. |
| STM32L476RGT6 | 1 MB flash, 128 KB SRAM, additional crypto accelerators (AES, HASH, PKA), no LCD but added Chrom-ART GPU. | Better suited for GUI-rich HMI applications with secure boot and encrypted communications. | Choose when firmware security, larger code space, or graphical rendering are required. |
Compared with STM32L432KCU6, the STM32L433RCT6 adds LCD, SMPS, and 4× more flash/SRAM - ideal for display-equipped, battery-optimized systems. Versus STM32L476RGT6, it trades crypto acceleration and memory size for lower cost and integrated LCD - optimal for analog-dominant, power-constrained designs.
Availability
STM32L433RCT6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial sensor nodes, and portable diagnostic devices requiring stable component supply across long product lifecycles.
Supply support for STM32L433RCT6 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, integrated analog, and robust security - optimized for battery-operated edge devices in healthcare, metering, and industrial IoT.
FAQ
What is the maximum operating temperature range for STM32L433RCT6?
The STM32L433RCT6 is qualified for industrial operation from –40 °C to +85 °C. An extended version (STM32L433RCT6P) supports –40 °C to +105 °C, and the automotive-grade variant reaches +125 °C - verified per JEDEC JESD47 stress testing standards.
Does STM32L433RCT6 support external SMPS regulation, and how is it configured?
Yes - the MCU provides dedicated PF0 (SMPS_EN) and PF1 (SMPS_VOUT) pins to control and monitor an external SMPS. Configuration requires enabling the PWR_CR3.SMPSEN bit and configuring the SMPS clock source (HSE/HSI16) via RCC_CCIPR register; reference design AN5026 details layout and loop compensation.
Can the integrated LCD controller drive graphic displays, or only segment-based LCDs?
The LCD controller supports only static and multiplexed segment-type LCDs (up to 8×40 or 4×44), not pixel-addressable graphic displays. It includes built-in step-up converter and contrast control, eliminating external bias supplies - ideal for numeric/alpha-numeric instrument panels and utility meter displays.
How many wake-up pins are available in Standby mode, and what is their voltage tolerance?
Five dedicated wake-up pins (WKUP1–WKUP5) are available in Standby mode, each capable of generating a reset or interrupt on rising/falling edge. These pins are 5 V-tolerant when configured as inputs, allowing direct connection to higher-voltage external sensors or switches without level shifters.
STM32L433RCT6 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:
STM32L433RCT6 FAQ
1.How can I place an order for STM32L433RCT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L433RCT6 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 STM32L433RCT6 reliable?
The price and inventory of STM32L433RCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L433RCT6 is usually 5 days.
3.What payment methods are accepted for STM32L433RCT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L433RCT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L433RCT6?
STM32L433RCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L433RCT6 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 STM32L433RCT6?
For technical support, including STM32L433RCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L433RCT6 requirements.
6.How does Aetrix verify that STM32L433RCT6 is sourced from the original manufacturer or authorized distributors?
All STM32L433RCT6 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 STM32L433RCT6 meets industry standards.
7.What is the process for return or replacement of STM32L433RCT6?
All STM32L433RCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L433RCT6, 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 STM32L433RCT6 part is unused and in its original packaging.
Return procedure for STM32L433RCT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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