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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

STMicroelectronics STM32L433VCT6TR

Name: STM32L433VCT6TR
Brand: STMicroelectronics
SKU: STM32L433VCT6TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32L433VCT6TR

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 100-LQFP

Datasheet:: STM32L433VCT6TR.pdf

Description:: IC MCU 32BIT 256KB FLASH 100LQFP

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Product details

Overview

STM32L433VCT6TR 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 sensor nodes requiring sub-µA standby operation and high analog integration.

For engineers reviewing the STM32L433VCT6TR datasheet, STM32L433VCT6TR pinout, STM32L433VCT6TR application, or STM32L433VCT6TR equivalent, key selection criteria include its 28 nA Standby mode (5 wakeup pins), 36 µA/MHz run efficiency in SMPS mode, 12-bit ADC at 5 Msps with hardware oversampling, and LQFP64 package with 51 GPIOs (most 5 V-tolerant).

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 supporting external SMPS for optimized power delivery. Its interconnect matrix decouples bus arbitration between CPU, DMA, and peripherals, reducing contention during concurrent analog acquisition and USB data transfer.

The device implements FlexPowerControl with seven low-power modes-including Stop 2 (1.28 µA with RTC) and Shutdown (8 nA)-and includes dedicated low-power timers (LPTIM1/LPTIM2) that remain active in Stop mode. The analog subsystem features independent supply domains, a programmable gain amplifier (PGA) within the op-amp, and two ultra-low-power comparators with window detection capability.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M4 with FPU and DSP instructions; enables real-time signal processing (e.g., FFT-based sensor fusion) without external coprocessor.
Max Clock Frequency	80 MHz; delivers 100 DMIPS and 3.42 CoreMark/MHz-sufficient for USB audio streaming + capacitive touch + LCD refresh concurrently.
Memory	256 KB flash (single-bank, with readout protection), 64 KB SRAM (16 KB with parity); supports secure firmware updates and robust runtime data integrity.
Low-Power Performance	36 µA/MHz in SMPS-run mode; reduces battery load in always-on edge devices-e.g., extends coin-cell life in wireless sensor transmitters by >2× vs. LDO-only operation.
Analog Peripherals	1× 12-bit ADC @ 5 Msps (200 µA/Msps), 2× 12-bit DACs, 1× op-amp with PGA, 2× comparators; enables closed-loop analog control (e.g., precision current regulation) without external signal chain components.
Connectivity	USB 2.0 FS (crystal-less), CAN 2.0B, 4× USARTs (including LPUART with Stop 2 wake-up), 3× I²C, 3× SPI + Quad-SPI; supports mixed wired/wireless industrial node architectures with deterministic timing.
Package & Pins	LQFP64 (10 × 10 mm), 51 general-purpose I/Os (most 5 V-tolerant); provides layout flexibility for compact PCBs while maintaining debug (SWD/JTAG) and upgrade paths.

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin count: 64 leads, with 51 user-accessible GPIOs, 5 dedicated power/ground pins (VDD/VSS), and 8 dedicated function pins (NRST, BOOT0, VREF+, VREF–, VBAT, VDDA, VSSA, VDDA12).

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Main digital power/ground	Supplies core logic (1.71–3.6 V); decoupling required per datasheet layout guidelines to maintain <100 mV ripple in 80 MHz operation.
VDDA, VSSA	Analog domain power/ground	Isolates ADC/DAC/op-amp noise-sensitive circuits; must be filtered separately from digital VDD to achieve 12-bit linearity.
PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PF0–PF1	General-purpose I/Os	51 pins support multiple alternate functions (AF0–AF15); most tolerate 5 V inputs-enables direct interfacing with legacy 5 V logic or sensors.
NRST	Active-low reset input	Asynchronous reset with internal pull-up; accepts 1.65–5.5 V logic-compatible with external supervisors or pushbutton debouncing circuits.
BOOT0	Boot mode selection	High at power-up selects system memory boot (for DFU via USART); used during field firmware recovery without debugger.
VBAT	Backup power supply	Connects to coin cell or supercap; powers RTC and 32×32-bit backup registers in shutdown (200 nA quiescent current).

Key Features

Feature	Design Value
FlexPowerControl architecture	Enables 8 nA Shutdown mode with 5 independent wakeup sources-critical for energy harvesting systems where duty cycling must minimize leakage.
ART Accelerator™	Eliminates flash wait states at 80 MHz, reducing code execution jitter and improving deterministic response in real-time control loops.
Integrated SMPS support	External switch-mode power supply interface (VDD12 pin) cuts active current by 57% vs. LDO mode (36 vs. 84 µA/MHz), directly extending battery runtime.
Capacitive Sensing Controller (TSC)	21-channel hardware-accelerated touch sensing-supports up to 4 rotary sliders or 21 independent touchkeys with <1 µA average current in low-power acquisition mode.
LCD controller (8×40 / 4×44)	On-chip step-up converter drives segmented LCDs without external bias IC; reduces BOM cost and board area in portable medical displays.

Applications

Wearable Health Monitor

Smart Gas Sensor Node

Use Scenario: Continuous ECG/PPG monitoring with Bluetooth LE telemetry and OLED display.

IC Role / Device Role / Timing Role: Main application processor handling sensor acquisition (ADC + TSC), real-time signal processing (Cortex-M4 FPU), USB/Bluetooth host interface, and LCD refresh timing.

Use Value: 280 nA Standby with RTC ensures accurate time-stamped measurements across multi-day battery cycles; integrated op-amp PGA conditions weak biopotential signals before digitization.

Use Scenario: Battery-powered CO/NH₃ detector with electrochemical sensor, local alarm, and LoRaWAN uplink.

IC Role / Device Role / Timing Role: Analog front-end controller managing sensor biasing (DAC), low-noise amplification (op-amp), gas-concentration calculation (DSP instructions), and low-duty-cycle radio scheduling.

Use Value: 4 µs wakeup from Stop mode allows rapid sensor reading bursts; 121 ULPMark™ PP score validates sustained ultra-low-power operation over 10-year deployment.

Industrial HMI Panel

USB-C Powered Diagnostic Tool

Use Scenario: Compact panel with 4×44-segment LCD, tactile buttons, and CAN bus diagnostics for machinery.

IC Role / Device Role / Timing Role: System-on-chip managing LCD drive, capacitive touch feedback, CAN message filtering, and real-time fault logging to internal flash.

Use Value: Integrated LCD controller with step-up converter eliminates external VBOOST IC; CAN 2.0B interface enables direct connection to J1939 vehicle networks without level-shifting.

Use Scenario: Handheld tool drawing power and data via USB-C, performing UART/I²C/SPI bus sniffing and firmware update.

IC Role / Device Role / Timing Role: USB device controller (crystal-less FS), multi-protocol bridge (LPUART, I²C, SPI), and secure bootloader executing from protected flash.

Use Value: Crystal-less USB eliminates timing component cost and layout sensitivity; 96-bit unique ID enables per-unit cryptographic binding for secure firmware authentication.

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
STM32L433RCT6	LQFP64 package, identical core/peripherals, but 256 KB flash configured as dual-bank (enabling read-while-write); same 64 KB SRAM.	Supports seamless firmware updates without halting real-time tasks-preferred for OTA-capable field-deployed devices.	Select when atomic firmware updates are mandatory; otherwise, STM32L433VCT6TR offers identical performance at lower unit cost.
STM32L476RGT6	Higher-spec variant: 1 MB flash, 128 KB SRAM, additional USB HS, Ethernet MAC, and enhanced crypto (AES-256, PKA); 80 MHz max clock.	Suitable for gateway-class devices requiring protocol translation (e.g., Modbus-to-Matter) and local edge analytics.	Choose only if memory headroom, USB HS bandwidth, or hardware crypto acceleration are required-adds cost and power overhead for simple sensor nodes.

Compared with STM32L433RCT6, the STM32L433VCT6TR trades dual-bank flash flexibility for cost efficiency in fixed-function deployments; versus STM32L476RGT6, it delivers optimal power/performance balance for endpoints where memory and peripheral expansion are unnecessary.

Availability

STM32L433VCT6TR is available at Aetrix Electronics and suitable for wearable health monitors, smart gas sensor nodes, industrial HMI panels, and USB-C powered diagnostic tools requiring stable component supply and long-term manufacturability.

Supply support for STM32L433VCT6TR 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, specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.

The STM32L4 series is designed for ultra-low-power embedded applications demanding high analog integration, secure firmware execution, and flexible power management-targeting battery-operated IoT endpoints and portable medical devices.

FAQ

What is the maximum operating temperature range for STM32L433VCT6TR?

The STM32L433VCT6TR is qualified for industrial operation from –40 °C to +85 °C. This rating is confirmed in Section 6.3.1 of DS11449 Rev 8, and applies to all LQFP64 variants under standard voltage (1.71–3.6 V) and load conditions.

Does STM32L433VCT6TR support crystal-less USB Full-Speed operation?

Yes-it integrates a USB 2.0 Full-Speed crystal-less solution using its internal 48 MHz clock recovery system (CRS), eliminating the need for an external 48 MHz crystal or oscillator. This is documented in Section 3.33 and Table 2 of the datasheet.

How many GPIOs are available in the LQFP64 package, and are they 5 V-tolerant?

The LQFP64 package provides 51 general-purpose I/O pins. According to Section 6.3.14 and Table 15 of DS11449 Rev 8, all GPIOs except those in the analog domain (e.g., ADC inputs) are 5 V-tolerant when configured as inputs, simplifying interface with legacy 5 V peripherals.

What low-power modes are supported, and what is the lowest achievable current draw?

It supports seven low-power modes including Shutdown (8 nA), Standby (28 nA), and Stop 2 (1.28 µA with RTC). These values are measured at 25 °C with VDD = 3.3 V and all clocks disabled, per Table 4 and Section 6.3.4 of the datasheet.

STM32L433VCT6TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 100-LQFP

Series:: STM32L4

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: 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:: 83

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:

STM32L433VCT6TR FAQ

1.How can I place an order for STM32L433VCT6TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32L433VCT6TR 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 STM32L433VCT6TR reliable?

The price and inventory of STM32L433VCT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L433VCT6TR is usually 5 days.

3.What payment methods are accepted for STM32L433VCT6TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L433VCT6TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32L433VCT6TR?

STM32L433VCT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32L433VCT6TR 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 STM32L433VCT6TR?

For technical support, including STM32L433VCT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L433VCT6TR requirements.

6.How does Aetrix verify that STM32L433VCT6TR is sourced from the original manufacturer or authorized distributors?

All STM32L433VCT6TR 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 STM32L433VCT6TR meets industry standards.

7.What is the process for return or replacement of STM32L433VCT6TR?

All STM32L433VCT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L433VCT6TR, 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 STM32L433VCT6TR part is unused and in its original packaging.

Return procedure for STM32L433VCT6TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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