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STMicroelectronics STM32W108CBU64TR
- Part No.:
- STM32W108CBU64TR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
STM32W108CBU64TR.pdf
- Description:
- IC RF TXRX+MCU BLE 48VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,413
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Product details
Overview
STM32W108CBU64TR from STMicroelectronics is a high-performance IEEE 802.15.4 wireless system-on-chip integrating an ARM® Cortex®-M3 core, 2.4 GHz transceiver, 128 Kbyte Flash, 8 Kbyte RAM, and AES128 encryption accelerator. It operates at 2.1–3.6 V, delivers +3 dBm RF output, and achieves -99 dBm RX sensitivity-designed for ZigBee® Pro sensor nodes in battery-powered building automation systems.
For engineers reviewing the STM32W108CBU64TR datasheet, STM32W108CBU64TR pinout, STM32W108CBU64TR application, or STM32W108CBU64TR equivalent, this page provides verified technical context, validated pin functions, confirmed low-power sleep modes (400 nA deep sleep), RF performance metrics, and real-world use cases in smart energy and security monitoring.
Technical Context
The device embeds a full IEEE 802.15.4 MAC layer with hardware-accelerated AES128, enabling secure frame encryption/decryption without CPU overhead. Its RF front-end supports configurable output power up to +8 dBm and link budget up to 107 dB via digital calibration registers.
Power management includes three independent sleep timers (sleep, event, MAC), dual internal oscillators (HSI @ 24 MHz for fast wake-up; LSI @ 10 kHz for ultra-low-power timing), and retention of RAM/GPIO state at 400 nA in deep sleep mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC processor supporting Thumb-2 instruction set at up to 24 MHz clock speed |
| Wireless Standard | IEEE 802.15.4-2006 compliant transceiver with integrated MAC layer and packet trace interface (PTI) |
| Memory | 128 Kbyte embedded Flash (programmable in 2-Kbyte sectors) and 8 Kbyte SRAM with DMA access support |
| RF Performance | -99 dBm RX sensitivity (1% PER, 20-byte packet); +3 dBm nominal TX output; configurable up to +8 dBm |
| Power Consumption | 27 mA RX current (with CPU active); 31 mA TX current (+3 dBm); 400 nA deep sleep current with RAM retention |
| Supply Voltage | 2.1–3.6 V single supply with on-chip 1.8 V and 1.25 V regulators for core/peripheral domains |
| GPIO | 24 highly configurable pins with Schmitt-trigger inputs, external interrupt capability, and wake-from-sleep monitoring |
Pinout & Package
STM32W108CBU64TR uses a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are validated per STMicroelectronics DocID16252 Rev 16 Section 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | 2.1–3.6 V analog/digital supply; powers core, RF, and I/O domains via internal regulators |
| VSS | Ground reference | Dedicated analog/digital ground pins ensure noise isolation between RF and digital sections |
| PA0–PA15, PB0–PB7 | General-purpose I/O | 24 GPIOs support alternate functions including SPI/I²C/UART, timer channels, and wake sources |
| OSC_IN / OSC_OUT | External crystal interface | Connects to 24 MHz crystal for precise RF timing and system clock generation |
| RF_P / RF_N | Differential RF antenna interface | Direct connection to balun or matching network; supports 50 Ω single-ended output via internal PA |
| nBOOTMODE | Boot configuration control | Pulled high during reset to select internal Flash boot mode; critical for firmware initialization sequence |
Key Features
| Feature | Design Value |
|---|---|
| Integrated IEEE 802.15.4 MAC | Hardware-implemented MAC layer reduces CPU load and ensures deterministic frame handling for time-critical mesh networks |
| AES128 Encryption Accelerator | Dedicated crypto engine performs encryption/decryption in <10 µs per 128-bit block, freeing Cortex-M3 for application logic |
| Ultra-Low-Power Deep Sleep | 400 nA current draw with RAM and GPIO state retained enables multi-year battery life in wireless sensors |
| Non-Intrusive Packet Trace | Hardware PTI captures RF packet metadata (RSSI, timestamp, CRC status) without affecting real-time operation |
| Flexible Clock System | Dual internal oscillators (24 MHz HSI, 10 kHz LSI) enable rapid wake-up (<100 µs) and precise low-power timing simultaneously |
Applications
| ZigBee® Pro Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Wireless temperature/humidity sensor deployed in HVAC ductwork with 10-year battery life requirement. IC Role / Device Role / Timing Role: Primary SoC executing ZigBee stack, ADC sampling, and AES-secured frame transmission every 30 seconds. Use Value: 400 nA deep sleep current and hardware MAC offload extend battery life while maintaining mesh reliability. |
Use Scenario: Wall-mounted thermostat communicating with gateway and zone actuators over ZigBee mesh. IC Role / Device Role / Timing Role: Central controller managing UI, local PID loop, and synchronized RF polling of connected sensors. Use Value: 24 GPIOs with Schmitt triggers tolerate noisy residential wiring environments; integrated 24 MHz oscillator eliminates external crystal cost. |
| Home Security Motion Detector | Industrial Wireless Valve Monitor |
Use Scenario: PIR-based motion sensor transmitting alerts only on detection, otherwise sleeping indefinitely. IC Role / Device Role / Timing Role: Event-triggered wake source activating RF transmit path and AES encryption before sending encrypted alert frame. Use Value: Hardware wake monitoring on GPIO + 8 dBm configurable TX power ensures reliable alarm delivery through walls and interference. |
Use Scenario: Corrosion-resistant valve position monitor in remote water infrastructure with no mains power. IC Role / Device Role / Timing Role: Low-duty-cycle data logger capturing position, temperature, and battery voltage every 4 hours. Use Value: Integrated 12-bit ADC and flexible SPI/I²C interfaces reduce BOM count; 102 dB link budget maintains connectivity over 300 m line-of-sight. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar IEEE 802.15.4 wireless SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CC2530F256RHAT | 8051 core, 256 KB Flash, no integrated MAC; requires external stack implementation | Limited real-time determinism in dense mesh networks due to software MAC latency | Preferred where legacy 8051 toolchain familiarity outweighs need for deterministic timing |
| JN5169-001-M00 | 32-bit RISC core, 512 KB Flash, JN516x ZigBee stack pre-integrated but no AES hardware accelerator | Higher memory headroom for OTA updates, but encryption handled in software causing higher CPU load and power | Chosen when field-upgradable ZigBee 3.0 certification is mandatory and AES offload is secondary |
Compared with CC2530F256RHAT and JN5169-001-M00, STM32W108CBU64TR uniquely combines hardware MAC, AES128 acceleration, and sub-µA deep sleep-making it optimal for battery-constrained, security-sensitive ZigBee Pro deployments requiring guaranteed timing behavior.
Availability
STM32W108CBU64TR is available at Aetrix Electronics and suitable for smart energy metering, building automation controllers, and home security sensor nodes requiring stable component supply amid long product lifecycles.
Supply support for STM32W108CBU64TR 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, analog ICs, and power devices for industrial, automotive, and IoT markets.
This part belongs to the STM32W wireless MCU family, engineered specifically for low-power, standards-compliant IEEE 802.15.4 mesh networking in resource-constrained embedded systems.
FAQ
Is STM32W108CBU64TR still recommended for new designs?
No. STMicroelectronics explicitly states this device is "not recommended for new designs" as of March 2015 (DocID16252 Rev 16). It remains in production for existing programs but lacks roadmap support for future feature enhancements or long-term availability guarantees beyond current inventory.
What package type does STM32W108CBU64TR use?
It uses a 48-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN) package measuring 7 mm × 7 mm with 0.5 mm pitch and an exposed thermal pad. This matches the "U" suffix in the part number and is distinct from the 40-pin VFQFPN variant used by other members of the STM32W108 series.
Does STM32W108CBU64TR support ZigBee 3.0?
No. It implements the IEEE 802.15.4-2006 PHY/MAC layer and was qualified for ZigBee® Pro (based on ZigBee 2007 stack), not ZigBee 3.0. Full ZigBee 3.0 compliance requires additional security layers and cluster library support not present in this silicon revision.
Can the RF output power be increased beyond +3 dBm?
Yes. The datasheet confirms configurable output power up to +8 dBm using internal calibration registers and appropriate external matching network tuning. However, achieving +8 dBm requires careful PCB layout, balun selection, and regulatory testing per regional RF certifications (e.g., FCC Part 15.247).
STM32W108CBU64TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STM32
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth, WiFi
- Protocol:
- 802.15.4, Zigbee®
- Modulation:
- -
- Frequency:
- 2.4GHz
- Data Rate (Max):
- -
- Power - Output:
- 3dBm
- Sensitivity:
- -99dBm
- Memory Size:
- 128kB Flash
- Serial Interfaces:
- ADC, GPIO, I2C, SPI, UART
- GPIO:
- 24
- Voltage - Supply:
- 2.1V ~ 3.6V
- Current - Receiving:
- 27mA
- Current - Transmitting:
- 31mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-VFQFPN (7x7)
STM32W108CBU64TR FAQ
1.How can I place an order for STM32W108CBU64TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32W108CBU64TR 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 STM32W108CBU64TR reliable?
The price and inventory of STM32W108CBU64TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32W108CBU64TR is usually 5 days.
3.What payment methods are accepted for STM32W108CBU64TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32W108CBU64TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32W108CBU64TR?
STM32W108CBU64TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32W108CBU64TR 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 STM32W108CBU64TR?
For technical support, including STM32W108CBU64TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32W108CBU64TR requirements.
6.How does Aetrix verify that STM32W108CBU64TR is sourced from the original manufacturer or authorized distributors?
All STM32W108CBU64TR 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 STM32W108CBU64TR meets industry standards.
7.What is the process for return or replacement of STM32W108CBU64TR?
All STM32W108CBU64TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32W108CBU64TR, 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 STM32W108CBU64TR part is unused and in its original packaging.
Return procedure for STM32W108CBU64TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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