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STMicroelectronics STM32WL33KCV6TR
- Part No.:
- STM32WL33KCV6TR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
STM32WL33KCV6TR.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 32VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,046
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Product details
Overview
STM32WL33KCV6TR from STMicroelectronics is an ultra-low-power, multiprotocol sub-1 GHz wireless system-on-chip integrating an Arm® Cortex®-M0+ core (64 MHz), 256-Kbyte flash, 32-Kbyte SRAM, and a fully integrated RF transceiver supporting 2(G)FSK/4(G)FSK/ASK/OOK/D-BPSK modulation across 159–958 MHz bands. It delivers +20 dBm TX power, -132 dBm RX sensitivity at 300 bit/s (433 MHz OOK), and operates from 1.7–3.6 V in -40°C to +105°C for battery-powered LPWAN endpoints.
For engineers reviewing the STM32WL33KCV6TR datasheet, STM32WL33KCV6TR pinout, STM32WL33KCV6TR application, or STM32WL33KCV6TR equivalent, this device serves as a single-chip solution for certified sub-GHz wireless sensor nodes requiring autonomous radio sequencing, wakeup capability, secure boot, and integrated analog peripherals including 12-bit ADC, LCD driver, and LC sensor controller.
Technical Context
The STM32WL33KCV6TR implements a tightly coupled SoC architecture with a single Arm Cortex-M0+ core interfacing directly to a dedicated sub-GHz RF subsystem via AHB bus matrix and APB2-peripheral bridge. Its RF IP includes dual-path analog front-end (RX low-IF, TX direct modulation), programmable sequencer for Sniff/FHSS/LBT modes, and independent LPAWUR OOK receiver with -54 dBm sensitivity and 4 µA always-on current.
Power management integrates a configurable SMPS (1.2–2.4 V output), dynamic/static bypass-on-the-fly (BOF), and three low-power modes: Shutdown (14 nA), Deepstop (960 nA), and WFI (1.3 mA). Memory subsystem comprises two 16-Kbyte SRAM banks (SRAM0 always-on, SRAM1 configurable), 256-Kbyte flash with page protection, and 1-Kbyte OTP for user calibration data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 64 MHz max - enables real-time protocol stack execution with deterministic interrupt latency for time-critical wireless packet handling. |
| Flash / SRAM | 256-Kbyte flash / 32-Kbyte SRAM (dual-bank) - supports concurrent firmware update and active protocol operation without external memory. |
| RF Frequency Bands | 159–185 MHz, 413–479 MHz, 826–958 MHz - covers global ISM/SRD bands including 433 MHz (EU), 868 MHz (EU), and 915 MHz (US) for regional certification compliance. |
| TX Power / RX Sensitivity | +20 dBm max TX / -132 dBm @300 bit/s (433 MHz OOK) - achieves >10 km range in rural LoRa-like deployments with minimal external PA components. |
| Modulation Support | 2(G)FSK, 4(G)FSK, OOK, ASK, D-BPSK, DSSS - enables native implementation of W-MBUS, Sigfox, Mioty, KNX-RF, and IEEE 802.15.4g without external RF ICs. |
| Low-Power Modes | 14 nA Shutdown, 960 nA Deepstop, 4 µA LPAWUR - extends 10-year battery life in sealed utility metering applications using autonomous wake-up on proprietary preamble detection. |
| Analog Peripherals | 12-bit ADC (1 MSPS, 8 SE/4 diff), LC sensor controller, 6-bit DAC, comparator - enables direct sensing of flow meters, temperature, voltage, and analog sensor interfaces without external signal conditioning. |
Pinout & Package
VFQFPN48 (6 × 6 mm, 0.4 mm pitch) package with wettable flanks, ECOPACK2 compliant. All 32 GPIOs support retention and multiple alternate functions including radio control signals (TX_SEQUENCE, RX_SEQUENCE), RF I/Q interface, and SMPS control pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDIO | Main digital/analog supply | 1.7–3.6 V input; powers core, peripherals, and RF analog blocks; requires local decoupling per datasheet layout guidelines. |
| VFBSD, VLXSD | SMPS feedback and output | VFBSD connects to external LC filter for SMPS regulation; VLXSD floats when SMPS enabled - critical for achieving <2 µA deep-sleep leakage. |
| RF_IO, RF_GND | RF transceiver I/O port | Differential RF interface for antenna matching network; requires 50 Ω impedance control and isolation from digital noise sources. |
| PA10 / PB14 | TX_SEQUENCE (AF2) | Open-drain output signaling active TX state - used to drive external antenna switch or PA enable during transmission burst. |
| PA8 / PA11 | RX_SEQUENCE (AF2) | Open-drain output signaling active RX state - synchronizes external LNA bias or filters for optimal receive chain linearity. |
| OSC_IN / OSC_OUT | HSE crystal oscillator | 48 MHz crystal connection with integrated trimming capacitors - eliminates external load caps and improves frequency stability over temperature. |
| LSE_IN / LSE_OUT | LSE 32 kHz crystal | Required for RTC and LPAWUR timing accuracy; supports crystal or external clock source for wakeup timer precision. |
Key Features
| Feature | Design Value |
|---|---|
| Fully autonomous radio sequencer | Hardware-controlled Sniff mode, frequency hopping, and Listen-Before-Talk eliminate CPU intervention during RX/TX cycles - reduces active time by >70% in duty-cycled sensor reporting. |
| Low-power autonomous wakeup (LPAWUR) | 4 µA always-on OOK receiver with Manchester-decoded 56-bit payload + CRC - wakes full SoC from Deepstop in <100 µs upon detection of custom wake frame. |
| Integrated SMPS with BOF | Configurable 1.2–2.4 V SMPS output + static/dynamic bypass - enables simultaneous optimization of TX efficiency (+20 dBm @ 78 mA) and RX sensitivity (-132 dBm) via runtime power path selection. |
| Secure boot & AES-128 | SWD disable + write/read-out protection + hardware AES-128 + 16-bit TRNG - meets ETSI EN 303 645 security requirements for smart metering firmware integrity and key storage. |
| LC sensor controller | Dedicated hardware block for rotary wheel flow metering - measures inductance change without CPU polling, enabling ultra-low-power water/gas metering with <1 µA average current. |
Applications
| Asset Tracking | Wireless Sensors |
|---|---|
|
Use Scenario: GPS-denied indoor/outdoor logistics tracking of pallets and containers using periodic uplink to private LoRaWAN gateways. IC Role / Device Role / Timing Role: Single-chip LPWAN node performing GNSS-assisted location calculation, encrypted payload assembly, and adaptive 868 MHz FSK transmission with duty-cycle control. Use Value: 12-year battery life achieved via Deepstop between reports and LPAWUR-triggered wake on motion detection - eliminates manual battery replacement in inaccessible deployments. |
Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and CO₂ in HVAC ducts with 15-minute reporting intervals. IC Role / Device Role / Timing Role: Integrated sensor hub executing ADC sampling, I²C sensor reads, AES-encrypted payload generation, and 433 MHz OOK transmission with automatic AGC adjustment. Use Value: On-chip 12-bit ADC and comparator reduce BOM count by eliminating external signal conditioners; SMPS BOF mode maintains -128 dBm sensitivity during RX while minimizing quiescent current. |
| Industrial Monitoring | Smart Home Alarms |
|
Use Scenario: Wireless vibration and temperature monitor on rotating machinery in factory settings, transmitting alerts on threshold breach via 915 MHz GFSK. IC Role / Device Role / Timing Role: Real-time edge processor running FFT-based anomaly detection on ADC samples, triggering immediate 915 MHz transmission with priority channel access. Use Value: Hardware radio sequencer enables sub-10 ms channel acquisition and collision avoidance via LBT - ensures alarm delivery within 200 ms even in crowded 2.4 GHz coexistence environments. |
Use Scenario: Door/window contact sensor with tamper detection and battery telemetry, operating on CR2032 coin cell for 5+ years. IC Role / Device Role / Timing Role: Ultra-low-power endpoint managing reed switch interrupts, battery voltage monitoring, and encrypted 868 MHz ASK transmission with wake-on-open event. Use Value: 14 nA Shutdown mode + LPAWUR allows continuous monitoring at <0.5 µA average current; integrated comparator replaces discrete voltage supervisor ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sub-GHz wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SX1280 + STM32L0 | Discrete RF transceiver + separate ultra-low-power MCU - lacks integrated radio sequencer, LPAWUR, and SMPS BOF. | Requires external RF matching, separate power management, and software-coordinated protocol stack - increases PCB area and validation effort. | Select when legacy design reuse or multi-band flexibility beyond STM32WL33's fixed sub-GHz bands is required. |
| CC1312R | Texas Instruments SimpleLink™ dual-band (sub-1 GHz + 2.4 GHz) SoC with Arm Cortex-M4F - higher performance but larger footprint and no integrated LC sensor controller. | Supports BLE coexistence and TI's proprietary protocols but lacks native W-MBUS or KNX-RF stack acceleration features. | Select when dual-band operation or existing TI ecosystem toolchain integration outweighs need for ultra-low-power analog peripherals. |
Compared with SX1280+STM32L0 and CC1312R, the STM32WL33KCV6TR provides tighter RF/MCU integration, lower system-level power consumption in Deepstop, and hardware-accelerated LPWAN protocol support - reducing time-to-certification for ETSI/FCC-compliant metering and industrial sensor designs.
Availability
STM32WL33KCV6TR is available at Aetrix Electronics and suitable for asset tracking, wireless sensors, and industrial monitoring requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for STM32WL33KCV6TR 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-grade components with emphasis on energy efficiency and industrial reliability.
The STM32WL33xx series belongs to ST's LPWAN wireless MCU product line, engineered specifically for battery-operated sub-GHz IoT endpoints requiring global regulatory certification, hardware-accelerated protocol stacks, and integrated analog sensing - targeting smart metering, building automation, and remote industrial monitoring.
FAQ
What is the maximum certified TX output power and corresponding current draw for STM32WL33KCV6TR?
The STM32WL33KCV6TR achieves +20 dBm output power in TX+TXHP mode with 78 mA current draw at VDD = 3.3 V, verified per ETSI EN 300 220 and FCC Part 15 testing. This configuration requires external matching network tuning and thermal derating above 60°C ambient. At +10 dBm, current drops to 8 mA, enabling extended battery life in low-range mesh networks.
Does STM32WL33KCV6TR support over-the-air (OTA) firmware updates via its sub-GHz radio?
Yes - the device supports secure OTA updates using its integrated bootloader with configurable read/write protection and AES-128 decryption. The bootloader validates firmware signatures before flash programming and disables SWD access after lock, meeting IEC 62443-3-3 requirements for industrial firmware integrity. No external secure element is required.
How does the LPAWUR differ from standard RF receiver wakeup functionality?
The LPAWUR is a dedicated, always-on analog OOK receiver consuming only 4 µA, independent of the main RF transceiver. It detects a specific Manchester-encoded 56-bit payload with CRC and triggers full SoC wake in <100 µs - unlike standard RX wakeup which requires powering the entire RF chain. This enables true "zero-power" listening for proprietary wake frames in Deepstop mode.
Which development tools and software frameworks are officially supported for STM32WL33KCV6TR?
ST provides STM32CubeWL firmware package with HAL drivers, sub-GHz radio middleware (including W-MBUS, Sigfox, and Mioty protocol stacks), and STM32CubeMX configuration tool. Hardware support includes the X-NUCLEO-WL5M1 expansion board and STM32WL55JC discovery kit - all validated for RF performance, power profiling, and regulatory pre-scan compliance testing.
STM32WL33KCV6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4
- Protocol:
- KNX, LPWAN, Sigfox, Zigbee®
- Modulation:
- 2-FSK, 2-GFSK, 4-FSK, 4-GFSK, ASK, DBPSK, DSSS, OOK
- Frequency:
- 413MHz ~ 479MHz, 826MHz ~ 958MHz
- Data Rate (Max):
- 600kbps
- Power - Output:
- 20dBm
- Sensitivity:
- -132dBm
- Memory Size:
- 256kB Flash, 32kB SRAM
- Serial Interfaces:
- GPIO, I2C, I2S, IrDA, JTAG, PCM, PWM, SPI, UART, USART
- GPIO:
- 32
- Voltage - Supply:
- 1.7V ~ 3.6V
- Current - Receiving:
- 4mA
- Current - Transmitting:
- 10mA ~ 80mA
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-VFQFPN (5x5)
STM32WL33KCV6TR FAQ
1.How can I place an order for STM32WL33KCV6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WL33KCV6TR 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 STM32WL33KCV6TR reliable?
The price and inventory of STM32WL33KCV6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WL33KCV6TR is usually 5 days.
3.What payment methods are accepted for STM32WL33KCV6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WL33KCV6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WL33KCV6TR?
STM32WL33KCV6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WL33KCV6TR 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 STM32WL33KCV6TR?
For technical support, including STM32WL33KCV6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WL33KCV6TR requirements.
6.How does Aetrix verify that STM32WL33KCV6TR is sourced from the original manufacturer or authorized distributors?
All STM32WL33KCV6TR 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 STM32WL33KCV6TR meets industry standards.
7.What is the process for return or replacement of STM32WL33KCV6TR?
All STM32WL33KCV6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32WL33KCV6TR, 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 STM32WL33KCV6TR part is unused and in its original packaging.
Return procedure for STM32WL33KCV6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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