My Inquiry
My Account
STMicroelectronics STM32L433RCI6TR
- Part No.:
- STM32L433RCI6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA
- Datasheet:
-
STM32L433RCI6TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,422
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32L433RCI6TR 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 delivers 36 µA/MHz in SMPS-run mode, 280 nA Standby with RTC, and supports capacitive touch sensing for battery-powered portable instrumentation.
For engineers reviewing the STM32L433RCI6TR datasheet, STM32L433RCI6TR pinout, STM32L433RCI6TR application, or STM32L433RCI6TR equivalent, key selection criteria include verified low-power mode current specs (e.g., 28 nA Shutdown), LCD driver capability (8×40 segment), and dual 12-bit DAC channels with sample-and-hold - all confirmed in DS11449 Rev 8.
Technical Context
This MCU integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, paired with a memory protection unit (MPU) and FlexPowerControl architecture. Its dual-voltage domain design separates analog peripherals (12-bit ADC @ 5 Msps, 2× DAC, OPAMP+PGA, 2× comparators) from digital logic, with independent supply rails ensuring noise immunity.
The clock system includes two PLLs (for system/USB/audio), internal 48 MHz RC with clock recovery, and LSE-trimmed multispeed oscillator (±0.25%). Low-power timers (LPTIM1/LPTIM2) remain active in Stop 2 mode, while the 17-communication interface suite includes USB 2.0 FS (crystal-less), CAN 2.0B, SAI, and SWPMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP and control algorithms without external co-processor |
| Memory | 256 KB flash (single-bank, code readout protected), 64 KB SRAM (16 KB with hardware parity) - supports secure firmware storage and robust runtime data integrity |
| Low-power Performance | 36 µA/MHz in SMPS-run mode; 280 nA Standby with RTC - extends battery life in always-on sensor nodes and wearable devices |
| Analog Peripherals | 1× 12-bit ADC (5 Msps, hardware oversampling to 16-bit), 2× 12-bit DAC (low-power sample & hold), 1× OPAMP with PGA, 2× comparators - enables precision signal acquisition and analog output without external components |
| Display & Touch | LCD controller supporting 8×40 or 4×44 segments with integrated step-up converter; 21-channel capacitive sensing - drives segmented displays and touch interfaces directly from MCU pins |
| Communication | USB 2.0 FS (crystal-less), CAN 2.0B, 4× USART, 1× LPUART, 3× I²C, 3× SPI, QuadSPI, SAI, SWPMI - provides flexible connectivity for industrial HMI, medical monitors, and smart meters |
| Package | UFBGA64 (A019), 5×5 mm, 0.5 mm pitch - compact footprint suitable for space-constrained portable electronics with high I/O density |
Pinout & Package
STM32L433RCI6TR uses a 64-pin UFBGA package (type A019, 5 × 5 mm, 0.5 mm pitch) with 51 general-purpose I/Os (most 5 V-tolerant), dedicated LCD segment/common lines, and symmetric power/ground distribution for EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Main, analog, and I/O supply rails | Independent domains allow analog section isolation; VDDIO2 supports 1.65–3.6 V for interfacing with diverse logic families |
| VSS, VSSA, VSSIO2 | Ground returns | Dedicated analog ground (VSSA) minimizes noise coupling into ADC/DAC paths |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/Os | Up to 51 GPIOs with configurable pull-up/down, alternate functions, and interrupt capability - enable flexible peripheral mapping and board layout optimization |
| PC13–PC15 | RTC oscillator inputs | Support 32.768 kHz crystal connection for hardware calendar and alarm functions with ±20 ppm accuracy |
| PA11/PA12 | USB D+/D− | Full-speed USB 2.0 interface with built-in transceivers - eliminates need for external PHY in crystal-less operation |
| PF0–PF15 | LCD segment/common drivers | Direct drive of up to 320 segments (8×40) with internal boost converter - reduces BOM cost and PCB area for display subsystems |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 8 nA Shutdown mode with 5 wakeup pins - ideal for energy-harvesting sensors requiring infrequent wakeups |
| ART Accelerator™ | Zero-wait-state flash execution at 80 MHz - eliminates performance penalty of internal memory access latency |
| Batch Acquisition Mode (BAM) | Permits CPU sleep during burst ADC sampling - reduces average power in periodic measurement applications |
| True Random Number Generator (RNG) | FIPS-compliant entropy source - satisfies cryptographic key generation requirements in secure boot and communication stacks |
| Embedded SMPS support | External switch-mode power supply interface (VDD12 input) - improves system efficiency vs. linear regulators in battery-powered designs |
Applications
| Portable Medical Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Wearable ECG patch with OLED/LCD display, touch controls, and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Main application processor managing sensor acquisition (ADC), display refresh (LCD controller), capacitive touch (TSC), and USB/Bluetooth interface timing. Use Value: 280 nA Standby with RTC enables multi-week battery life; integrated DAC and OPAMP eliminate external signal conditioning circuitry. | Use Scenario: Battery-backed electricity meter with LCD display, tamper detection, and PLC/RF communication. IC Role / Device Role / Timing Role: System controller handling metrology ADC sampling, LCD segment driving, real-time tariff calculation, and secure firmware updates via LPUART. Use Value: 36 µA/MHz SMPS-run mode extends 10-year battery life; hardware CRC and RNG support AES-128 encryption for firmware integrity. |
| Industrial HMI Panel | Wireless Sensor Node |
Use Scenario: DIN-rail mounted panel with 4×44-segment LCD, pushbutton/touch interface, and RS-485 fieldbus. IC Role / Device Role / Timing Role: Human-machine interface controller executing graphics rendering, touch event processing, and deterministic serial protocol timing (USART + LIN). Use Value: 84 µA/MHz LDO-run mode ensures stable operation across wide temperature range (−40 °C to 105 °C); 51 GPIOs simplify button matrix and LED driver integration. | Use Scenario: LoRaWAN node monitoring temperature/humidity with wake-on-event and solar charging. IC Role / Device Role / Timing Role: Ultra-low-power host managing sensor polling (I²C), RF interface (SPI), and precise wakeup scheduling (LPTIM2 + RTC). Use Value: 4 µs wakeup from Stop mode minimizes latency in event-driven sensing; 21-channel TSC supports proximity detection without additional ICs. |
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 | TQFP64 package (10×10 mm), higher thermal resistance, no WLCSP/UFBGA footprint compatibility | Suitable for prototyping and manual assembly; less optimal for miniaturized production boards | Select when board reworkability or through-hole-compatible reflow is required over size constraints |
| STM32L476RGT6 | Higher flash (1 MB), added Chrom-ART accelerator, no LCD controller, 1.8–3.6 V supply only | Better for GUI-rich applications without segmented displays; lacks integrated LCD step-up converter | Choose when advanced graphics rendering is needed but LCD segment driving is unnecessary |
Compared with STM32L433RCT6, the RCI6TR offers superior board-level miniaturization and thermal performance in UFBGA64; versus STM32L476RGT6, it trades flash capacity and GPU acceleration for on-chip LCD support and extended voltage range (1.71–3.6 V), making it optimal for compact, display-centric battery devices.
Availability
STM32L433RCI6TR is available at Aetrix Electronics and suitable for portable medical monitors, smart utility meters, industrial HMI panels, and wireless sensor nodes requiring stable component supply across long product lifecycles.
Supply support for STM32L433RCI6TR 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer markets.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, with emphasis on battery longevity, integrated peripherals (LCD, touch, USB), and security features like hardware RNG and memory protection.
FAQ
What is the maximum operating frequency and core type of STM32L433RCI6TR?
The STM32L433RCI6TR features an Arm Cortex-M4 core with FPU, rated for up to 80 MHz operation delivering 100 DMIPS. This frequency is achievable with ART Accelerator enabled and zero-wait-state flash execution, as validated in DS11449 Rev 8 Section 3.1 and Table 4 (modes overview).
Does STM32L433RCI6TR support external SMPS, and what are the benefits?
Yes - it supports external switch-mode power supply via the VDD12 pin, enabling 36 µA/MHz run-mode current (vs. 84 µA/MHz with internal LDO). This reduces system power consumption by >57% in continuous operation, critical for battery-powered applications where thermal dissipation and runtime are constrained.
How many I/O pins does STM32L433RCI6TR have, and are they 5 V-tolerant?
The UFBGA64 package provides 51 fast I/O pins, with most rated 5 V-tolerant on 3.3 V supply (as specified in Section 6.3.14, "I/O port characteristics"). This allows direct interfacing with legacy 5 V peripherals without level shifters, simplifying mixed-voltage system design.
What LCD configurations does the integrated controller support?
The LCD controller supports either 8 commons × 40 segments or 4 commons × 44 segments, with integrated step-up converter enabling operation from single 3.3 V supply. It drives static, multiplexed, or bias-ratio configurable displays - confirmed in Section 3.21 and Table 2 (device features) of DS11449 Rev 8.
STM32L433RCI6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-UFBGA
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L433RCI6TR FAQ
1.How can I place an order for STM32L433RCI6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L433RCI6TR 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 STM32L433RCI6TR reliable?
The price and inventory of STM32L433RCI6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L433RCI6TR is usually 5 days.
3.What payment methods are accepted for STM32L433RCI6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L433RCI6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L433RCI6TR?
STM32L433RCI6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L433RCI6TR 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 STM32L433RCI6TR?
For technical support, including STM32L433RCI6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L433RCI6TR requirements.
6.How does Aetrix verify that STM32L433RCI6TR is sourced from the original manufacturer or authorized distributors?
All STM32L433RCI6TR 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 STM32L433RCI6TR meets industry standards.
7.What is the process for return or replacement of STM32L433RCI6TR?
All STM32L433RCI6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L433RCI6TR, 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 STM32L433RCI6TR part is unused and in its original packaging.
Return procedure for STM32L433RCI6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L433RCI6TR Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
