My Inquiry
My Account
STMicroelectronics STM32WL33K8V7TR
- Part No.:
- STM32WL33K8V7TR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
STM32WL33K8V7TR.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 32VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,871
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32WL33K8V7TR from STMicroelectronics is an ultra-low-power, multiprotocol sub-1 GHz wireless system-on-chip integrating an Arm® Cortex®-M0+ core (64 MHz), 64 KB flash, 16 KB SRAM, and a fully configurable RF transceiver supporting 2(G)FSK/4(G)FSK/OOK/ASK/D-BPSK modulation across 159–958 MHz bands with +20 dBm TX power and -132 dBm RX sensitivity at 300 bit/s (433 MHz OOK). It targets battery-powered LPWAN endpoints in industrial metering and asset tracking.
For engineers reviewing the STM32WL33K8V7TR datasheet, STM32WL33K8V7TR pinout, STM32WL33K8V7TR application, or STM32WL33K8V7TR equivalent, key selection criteria include sub-GHz RF performance under 1.7–3.6 V supply, Deepstop mode current (960 nA), LPAWUR wakeup capability (-54 dBm sensitivity, 4 µA), and VFQFPN32 package compatibility with 17 GPIOs and retention support.
Technical Context
The STM32WL33K8V7TR implements a tightly coupled SoC architecture where the Cortex-M0+ core shares memory space and AHB bus access with the RF subsystem-including dedicated radio timers, autonomous hardware sequencer for Sniff/FHSS/LBT modes, and I/Q data path for custom protocol implementation. Its dual-power-domain design separates analog RF (VDD12o) and digital logic (VDD) supplies, enabling independent SMPS/LDO control.
RF operation is decoupled from MCU execution via APB2-connected MR_SUBG (digital) and RFSUBG (analog) IP blocks, with hardware-accelerated CRC, AES-128, and TRNG supporting secure over-the-air updates. The LPAWUR operates in always-on mode using Manchester-encoded OOK frames (40-bit sync + 8-bit 0x99 frame sync + 56-bit payload + 16-bit CRC) synchronized to LSI or LSE clock.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm® Cortex®-M0+, 64 MHz max - enables real-time protocol stack execution with <1 µs interrupt latency for time-critical RF events. |
| Memory | 64 KB flash / 16 KB SRAM / 1 KB OTP - sufficient for dual-stack W-MBUS + application firmware with user configuration storage. |
| RF Bands | 159–185 / 413–479 / 826–958 MHz - covers global ISM/SRD bands including EU 868 MHz, US 915 MHz, and JP 920 MHz without external filters. |
| TX Power | +20 dBm max (TX+TXHP mode) - achieves >10 km range in open-field LoRa-like deployments with standard PCB antenna. |
| RX Sensitivity | -132 dBm @300 bit/s (433 MHz OOK) - supports ultra-narrowband reception in high-interference environments like utility substations. |
| Low-Power Modes | 960 nA Deepstop / 4 µA LPAWUR active - enables 10+ year battery life in gas/water metering with daily 30-second wake-up bursts. |
| Supply Range | 1.7–3.6 V - compatible with primary Li-SOCl₂ (3.6 V), Li-MnO₂ (3.0 V), and alkaline (1.5 V × 2) battery configurations. |
Pinout & Package
VFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with wettable flanks, ECOPACK2 compliant, optimized for automated optical inspection and thermal dissipation in compact sensor nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDIO | Digital power supply | Accepts 1.7–3.6 V; powers GPIOs, Cortex-M0+, and digital peripherals; requires local 100 nF decoupling. |
| VDD12o, VDD12I | RF analog power supply | Separate 1.2 V domains for RF transceiver analog circuitry; must be filtered independently to prevent RX desensitization. |
| PA10 / PB14 | TX_SEQUENCE (AF2) | Open-drain output signaling active transmission; used to drive external PA enable or antenna switch control. |
| PA8 / PA11 | RX_SEQUENCE (AF2) | Open-drain output signaling active reception; synchronizes external LNA bias or diversity antenna selection. |
| OSC_IN / OSC_OUT | HSE crystal interface | Connects to 48 MHz crystal for precise timing; integrated trimming capacitors eliminate external load caps. |
| LSE_IN / LSE_OUT | LSE crystal interface | Connects to 32.768 kHz crystal for RTC and LPAWUR timing; supports crystal-less operation via LSI RC oscillator. |
| NRST | Active-low reset input | Asynchronous reset pin; internal pull-up; compatible with push-button or supervisor IC assertion. |
| BOOT0 | Boot mode selection | High at power-up selects system memory bootloader; low selects user flash; internal pull-down. |
Key Features
| Feature | Design Value |
|---|---|
| Fully autonomous radio sequencer | Hardware state machine executing Sniff, Frequency Hopping, and Listen-Before-Talk without CPU intervention-reducing active time by >90% in duty-cycled sensors. |
| Low-Power Autonomous Wake-Up Radio (LPAWUR) | Always-on OOK receiver consuming only 4 µA with -54 dBm sensitivity-enables periodic network-wide wake-up commands without draining main battery. |
| Integrated SMPS with bypass-on-the-fly | Configurable 1.2–2.4 V output with static/dynamic bypass modes-improves RX sensitivity by disabling switching noise during critical demodulation windows. |
| Multi-protocol RF engine | Native support for W-MBUS, Sigfox, MiWi, KNX-RF, IEEE 802.15.4g-eliminates need for external protocol co-processors in certified smart meter designs. |
| Secure boot with SWD disable | One-time programmable lock preventing debug access after firmware validation-meets EN 13757-3 and DLMS/COSEM security requirements for utility meters. |
Applications
| Asset Tracking | Wireless Sensors |
|---|---|
Use Scenario: GPS-denied indoor/outdoor cargo container monitoring with periodic location reporting via private 868 MHz mesh. IC Role / Device Role / Timing Role: Sub-GHz SoC handling GNSS assist data parsing, BLE-to-LoRa protocol translation, and scheduled 15-minute RF burst transmissions. Use Value: 960 nA Deepstop current extends CR123A battery life to 7 years while maintaining ±200 ms timing accuracy via integrated RTC and LSE calibration. | Use Scenario: Battery-powered temperature/humidity node in HVAC ducts transmitting every 5 minutes to gateway via W-MBUS T-mode. IC Role / Device Role / Timing Role: Dual-role processor executing EN 13757-4-compliant W-MBUS stack and analog sensor acquisition with 12-bit ADC oversampling. Use Value: -128 dBm RX sensitivity at 868 MHz 2(G)FSK ensures reliable packet reception despite metal-duct attenuation (>35 dB loss). |
| Industrial Monitoring | Smart Home Alarms |
Use Scenario: Wireless pressure sensor on oil pipeline with tamper detection, reporting anomalies via proprietary 433 MHz FSK protocol. IC Role / Device Role / Timing Role: Secure edge node performing AES-128 encryption of sensor data, LPAWUR-triggered emergency alerts, and RF spectral analysis via I/Q sampling. Use Value: +20 dBm TX power compensates for 200 m underground pipe burial depth, achieving 99.9% packet delivery at 10 kbit/s. | Use Scenario: Door/window contact sensor using ASK modulation in 868 MHz band with encrypted status updates every 30 seconds. IC Role / Device Role / Timing Role: Ultra-low-power endpoint managing magnetic reed switch debouncing, AES-encrypted payload generation, and adaptive duty cycling. Use Value: 4 µA LPAWUR current enables 10-year CR2032 operation while maintaining sub-100 ms response to forced-open events via hardware interrupt. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sub-GHz wireless microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32WLE5JC | Higher flash (256 KB) and RAM (64 KB); dual-core (Cortex-M4 + Cortex-M0+); supports LoRa modulation via SX126x co-processor interface | Targets complex gateways requiring concurrent LoRaWAN and cellular backhaul; not pin-compatible | Select when needing LoRa PHY offload or real-time OS with >100 kB code footprint |
| CC1312R1F3RGZT | TI SimpleLink™ ARM Cortex-M4F; 352 KB flash; integrated RF front-end with 20 dBm PA; supports IEEE 802.15.4g but no native W-MBUS stack | Requires external firmware for W-MBUS compliance; lacks LPAWUR and SMPS bypass-on-the-fly | Select for TI ecosystem integration or when leveraging TI's RF-Studio for regulatory certification acceleration |
Compared with STM32WL33K8V7TR, STM32WLE5JC offers greater processing headroom for multi-protocol gateways but increases BOM cost and layout complexity, while CC1312R1F3RGZT provides superior RF testability yet requires full stack development for utility metering compliance.
Availability
STM32WL33K8V7TR is available at Aetrix Electronics and suitable for asset tracking, wireless sensors, and industrial monitoring requiring stable component supply with guaranteed long-term availability through STMicroelectronics' 10-year product longevity program.
Supply support for STM32WL33K8V7TR 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 since 1987.
The STM32WL33xx series belongs to ST's ultra-low-power wireless MCUs product line, engineered specifically for battery-operated LPWAN endpoints in utility metering, environmental sensing, and industrial telemetry where RF certification, security, and decade-long runtime are mandatory.
FAQ
What is the maximum certified TX power level for STM32WL33K8V7TR in ETSI EN 300 220 Category 1 applications?
The STM32WL33K8V7TR achieves +14 dBm certified output power in 868 MHz band under ETSI EN 300 220 Cat.1 with integrated PA and matching network per ST reference design AN5525. Higher +20 dBm operation requires external PA and separate regulatory approval.
Does STM32WL33K8V7TR support hardware-accelerated AES decryption for OTA firmware updates?
Yes - it integrates a dedicated AES-128 co-processor with DMA interface enabling zero-CPU-overhead decryption of encrypted firmware images. Keys are stored in protected OTP or flash with read-out protection enabled, meeting IEC 62443-3-3 SL2 requirements.
Can the LPAWUR operate independently while the main MCU is in Shutdown mode?
Yes - the LPAWUR resides in an always-on power domain with its own 32 kHz clock source (LSI or LSE). It generates a wakeup event directly to the NVIC upon valid Manchester OOK frame detection, restoring full SoC operation from 14 nA Shutdown mode within 12 µs.
What GPIO retention capability does STM32WL33K8V7TR provide in Deepstop mode?
All 17 GPIOs in the VFQFPN32 package retain their state and interrupt configuration in Deepstop mode (960 nA). Each pin can be individually configured for wakeup via rising/falling edge or level detection, enabling selective sensor-triggered recovery without full system restart.
STM32WL33K8V7TR 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)
STM32WL33K8V7TR FAQ
1.How can I place an order for STM32WL33K8V7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WL33K8V7TR 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 STM32WL33K8V7TR reliable?
The price and inventory of STM32WL33K8V7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WL33K8V7TR is usually 5 days.
3.What payment methods are accepted for STM32WL33K8V7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WL33K8V7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WL33K8V7TR?
STM32WL33K8V7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WL33K8V7TR 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 STM32WL33K8V7TR?
For technical support, including STM32WL33K8V7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WL33K8V7TR requirements.
6.How does Aetrix verify that STM32WL33K8V7TR is sourced from the original manufacturer or authorized distributors?
All STM32WL33K8V7TR 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 STM32WL33K8V7TR meets industry standards.
7.What is the process for return or replacement of STM32WL33K8V7TR?
All STM32WL33K8V7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32WL33K8V7TR, 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 STM32WL33K8V7TR part is unused and in its original packaging.
Return procedure for STM32WL33K8V7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WL33K8V7TR Tags
-
ESP32-D0WD-V3
Espressif Systems
-
ESP8266EX
Espressif Systems
-
ESP32-S3
Espressif Systems
-
NRF24L01P-R7
Nordic Semiconductor ASA
-
NRF24L01P-R
Nordic Semiconductor ASA
-
ESP32-U4WDH
Espressif Systems
-
DA14531-00000OG2
Renesas
-
ESP32-C6FH4
Espressif Systems
-
DA14531-00000FX2
Renesas
-
NRF24L01P-T
Nordic Semiconductor ASA
-
NRF52810-QCAA-R
Nordic Semiconductor ASA
-
ESP32-S3FN8
Espressif Systems
Tech Hub
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
