My Inquiry
My Account
STMicroelectronics STM32WL33C8V7
- Part No.:
- STM32WL33C8V7
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
STM32WL33C8V7.pdf
- Description:
- VFQFPN 6X6X0.9 48L PITCH 0.4
- Quantity:
- Payment:
- Shipping:
Inventory:150
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32WL33C8V7 from STMicroelectronics is an ultra-low-power, single-core Arm® Cortex®-M0+ 32-bit wireless SoC integrating sub-1 GHz RF transceiver and 64 KB flash / 16 KB SRAM. It supports 433/868/915 MHz ISM bands, programmable TX power up to +20 dBm, and -132 dBm RX sensitivity at 300 bit/s (433 MHz OOK), targeting battery-operated LPWAN endpoints such as remote metering and industrial sensors.
For engineers reviewing the STM32WL33C8V7 datasheet, STM32WL33C8V7 pinout, STM32WL33C8V7 application, or STM32WL33C8V7 equivalent, key selection criteria include sub-GHz modulation support (2/4(G)FSK, OOK, D-BPSK), wakeup radio capability (-54 dBm LPAWUR), SMPS/LDO power architecture, and ECOPACK2-compliant VFQFPN48 package with 32 GPIOs and full retention.
Technical Context
The STM32WL33C8V7 integrates a tightly coupled Arm Cortex-M0+ CPU (64 MHz max) with a fully autonomous sub-GHz RF subsystem sharing memory and DMA resources via a multilayer AHB bus matrix. Its RF front-end uses low-IF RX architecture and direct modulation TX with polar control, enabling custom protocol implementation via I/Q data access and hardware sequencer-driven operations (sniff mode, frequency hopping).
It features dual-power-domain operation: VDDIO (1.7–3.6 V) powers digital logic and I/Os, while VDDSD supplies the RF and analog blocks; SMPS output (1.2–2.4 V) is programmable and bypassable in static/dynamic modes to optimize RX sensitivity. The LPAWUR operates autonomously on 32 kHz clock (LSI or LSE) with Manchester-encoded OOK frame detection and 4 µA always-on current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 64 MHz max - delivers deterministic real-time execution for protocol stacks and sensor processing in constrained power budgets. |
| Memory | 64 KB flash / 16 KB SRAM / 1 KB OTP - sufficient for dual-role firmware (application + proprietary radio stack) with secure boot and field-upgradable code. |
| 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 filtering. |
| RX Sensitivity | -132 dBm @ 300 bit/s (433 MHz OOK) - enables >1 km line-of-sight range in narrowband LPWAN deployments with minimal external amplification. |
| TX Power | +20 dBm max (TX+TXHP mode) - supports long-range mesh or star topology links while maintaining <78 mA peak current draw. |
| Ultra-Low Power | 14 nA Shutdown / 960 nA Deepstop / 4 µA LPAWUR - extends 10-year battery life in wake-on-radio sensor nodes with infrequent transmissions. |
| Modulation Support | 2/4(G)FSK, OOK, ASK, D-BPSK, DSSS - allows compliance with W-MBUS, Sigfox, Mioty, KNX-RF, and IEEE 802.15.4g without external RF IC. |
Pinout & Package
VFQFPN48 (6 × 6 mm, 0.4 mm pitch) package with wettable flanks, ECOPACK2-compliant, rated for -40 °C to +105 °C ambient operation. All 32 GPIOs support retention and multiple alternate functions including radio control signals (TX_SEQUENCE, RX_SEQUENCE), LPUART, SPI, I²C, and ADC inputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDIO | Digital power supply | 1.7–3.6 V input powering core logic, peripherals, and I/Os; decoupling required per datasheet layout guidelines. |
| VDDSD | RF/analog domain supply | Separate 1.7–3.6 V rail for RF transceiver and analog blocks; isolation critical for RX sensitivity and EMI robustness. |
| VFBSD | SMPS feedback/output node | Connects to external LC filter for SMPS regulation; configurable for bypass-on-the-fly (static/dynamic) to disable SMPS during RX. |
| PA10 / PB14 | TX_SEQUENCE (AF2) | Active-high signal indicating RF transmit activity; used to drive external antenna switch or PA enable in multi-band designs. |
| PA8 / PA11 | RX_SEQUENCE (AF2) | Active-high signal indicating RF receive activity; synchronizes external LNA bias or coexistence timing with other radios. |
| OSC_IN / OSC_OUT | HSE crystal interface | 48 MHz fail-safe crystal oscillator pins with integrated trimming capacitors - eliminates external load caps and improves frequency stability. |
| LSE_IN / LSE_OUT | 32 kHz RTC/wakeup crystal | Required for RTC calendar, Deepstop wake-up, and LPAWUR timing; supports external 32.768 kHz crystal or internal LSI. |
Key Features
| Feature | Design Value |
|---|---|
| Fully autonomous radio sequencer | Hardware-controlled sniff mode, frequency hopping, and listen-before-talk eliminate CPU intervention during RX monitoring, reducing active time by >90%. |
| Low-power wakeup radio (LPAWUR) | 4 µA always-on OOK receiver with -54 dBm sensitivity detects preconfigured Manchester frames to wake full SoC from Deepstop in <100 µs. |
| Integrated SMPS with BOF | Programmable 1.2–2.4 V output and dynamic/static bypass modes allow real-time trade-off between efficiency (SMPS ON) and RX sensitivity (BOF enabled). |
| Secure boot & AES-128 | SWD disabling, write/read-out protection, and hardware-accelerated encryption enable OTA firmware updates with tamper-resistant key storage in OTP. |
| Multi-protocol RF compatibility | Native support for W-MBUS (mode N, T), Sigfox uplink, Mioty TDMA, and IEEE 802.15.4g PHY eliminates need for external protocol co-processors. |
Applications
| Asset Tracking | Wireless Sensors |
|---|---|
|
Use Scenario: GPS-denied indoor/outdoor cargo tracking using periodic geofence-triggered transmissions. IC Role / Device Role / Timing Role: Sub-GHz SoC executing lightweight LoRaWAN-like MAC layer, managing GNSS assist data, and controlling accelerometer wake-up. Use Value: 10-year battery life achieved via Deepstop between reports and LPAWUR-triggered emergency alerts without MCU wake-up latency. |
Use Scenario: Battery-powered temperature/humidity node in HVAC ducts with 15-minute reporting interval. IC Role / Device Role / Timing Role: Sensor hub aggregating ADC readings, applying digital filtering, and transmitting encrypted payload via 868 MHz GFSK. Use Value: Integrated 12-bit ADC (1 MSPS) and 16 KB SRAM enable local oversampling and burst transmission, reducing airtime by 40% vs. raw streaming. |
| Industrial Monitoring | Smart Home Alarms |
|
Use Scenario: Wireless vibration monitor on rotating machinery with FFT-based anomaly detection. IC Role / Device Role / Timing Role: Real-time edge processor running CMSIS-DSP FFT on ADC samples, triggering high-priority 915 MHz burst on threshold exceedance. Use Value: Cortex-M0+ at 64 MHz executes 1024-point FFT in <8 ms, enabling sub-second response while maintaining <2 µA average current in idle. |
Use Scenario: Door/window contact sensor with tamper detection and battery telemetry. IC Role / Device Role / Timing Role: Ultra-low-power endpoint using LPAWUR to detect magnetic field change events and wake for encrypted 433 MHz OOK transmission. Use Value: 4 µA LPAWUR current enables 12-year CR2032 life; integrated comparator and voltage monitor eliminate external BOM components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sub-GHz wireless SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SX1280 + STM32L4 | Discrete RF transceiver (2.4 GHz only) + separate ultra-low-power MCU - no integrated radio sequencer or LPAWUR. | Requires external RF front-end design, PCB layout complexity increases; lacks hardware autonomous RX monitoring. | Select when 2.4 GHz ISM band is mandated and legacy RF IP reuse is prioritized over integration. |
| CC1312R | Arm Cortex-M4F + proprietary RF core; supports 433/868/915 MHz but no DSSS or D-BPSK; max TX +14 dBm. | TI's SimpleLink SDK provides mature LPWAN stacks but lacks native W-MBUS mode N/T certification path. | Select for TI ecosystem dependency and where higher CPU performance (M4F) outweighs need for +20 dBm TX or DSSS modulation. |
Compared with SX1280+STM32L4 and CC1312R, the STM32WL33C8V7 uniquely combines +20 dBm TX, DSSS/D-BPSK, certified W-MBUS support, and 4 µA LPAWUR in a single die - reducing BOM count by ≥5 components and eliminating RF calibration overhead.
Availability
STM32WL33C8V7 is available at Aetrix Electronics and suitable for asset tracking, wireless sensors, and industrial monitoring requiring stable component supply across automotive-grade temperature ranges and long-life battery deployments.
Supply support for STM32WL33C8V7 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 sensing technologies for industrial, automotive, and IoT markets.
The STM32WL33xx series is part of ST's LPWAN-optimized wireless MCU product line, designed specifically for battery-powered sub-GHz endpoints needing regulatory-certified RF, ultra-low-power autonomy, and secure over-the-air updates.
FAQ
What is the maximum certified TX output power for STM32WL33C8V7 in ETSI EN 300 220 Category 1 applications?
The STM32WL33C8V7 achieves +14 dBm certified output power in 868 MHz band under ETSI EN 300 220 Cat.1 with appropriate antenna matching and conducted emission filtering. Its +20 dBm capability requires external PA and additional certification testing per regional requirements.
Does STM32WL33C8V7 support hardware-accelerated AES decryption for secure bootloader verification?
Yes - it integrates a dedicated AES-128 co-processor with DMA support, enabling zero-wait-state decryption of signed firmware images during boot. The secure bootloader validates signatures using public keys stored in protected flash before enabling SWD or executing user code.
How does the SMPS bypass-on-the-fly (BOF) feature improve RF receiver sensitivity?
Enabling dynamic BOF disables the switching SMPS and activates a low-noise linear regulator for VDDSD, reducing power-supply-induced phase noise on the RF synthesizer. This improves adjacent-channel selectivity by ≥8 dB and enables -132 dBm sensitivity at 300 bit/s without external LDO.
Can the LPAWUR detect arbitrary OOK packets, or is it limited to the predefined Manchester frame format?
LPAWUR is hardwired to detect only the fixed Manchester-encoded frame: 40-bit sync (0x0000000000), 8-bit sync pattern (0x99), 56-bit payload, and 16-bit CRC. Payload bits are configurable via registers, but modulation, encoding, and frame structure cannot be altered in hardware.
STM32WL33C8V7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STM32WL33xx
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- 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:
- 48-VFQFPN (6x6)
STM32WL33C8V7 FAQ
1.How can I place an order for STM32WL33C8V7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32WL33C8V7 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 STM32WL33C8V7 reliable?
The price and inventory of STM32WL33C8V7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32WL33C8V7 is usually 5 days.
3.What payment methods are accepted for STM32WL33C8V7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32WL33C8V7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32WL33C8V7?
STM32WL33C8V7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32WL33C8V7 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 STM32WL33C8V7?
For technical support, including STM32WL33C8V7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32WL33C8V7 requirements.
6.How does Aetrix verify that STM32WL33C8V7 is sourced from the original manufacturer or authorized distributors?
All STM32WL33C8V7 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 STM32WL33C8V7 meets industry standards.
7.What is the process for return or replacement of STM32WL33C8V7?
All STM32WL33C8V7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32WL33C8V7, 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 STM32WL33C8V7 part is unused and in its original packaging.
Return procedure for STM32WL33C8V7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32WL33C8V7 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…
