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STM32W108HB

High-performance, IEEE 802.15.4 wireless system-on-chip with 128-Kbyte Flash, QFN40
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The STM32W108 is a fully integrated System-on-Chip that integrates a 2.4 GHz, IEEE 802.15.4-compliant transceiver, 32-bit ARM® Cortex™-M3 microprocessor, Flash and RAM memory, and peripherals of use to designers of 802.15.4-based systems.

The transceiver utilizes an efficient architecture that exceeds the dynamic range requirements imposed by the IEEE 802.15.4-2003 standard by over 15 dB. The integrated receive channel filtering allows for robust co-existence with other communication standards in the 2.4 GHz spectrum, such as IEEE 802.11 and Bluetooth. The integrated regulator, VCO, loop filter, and power amplifier keep the external component count low. An optional high performance radio mode (boost mode) is software-selectable to boost dynamic range.

The integrated 32-bit ARM® Cortex™-M3 microprocessor is highly optimized for high performance, low power consumption, and efficient memory utilization. Including an integrated MPU, it supports two different modes of operation: Privileged mode and Unprivileged mode. This architecture could be used to separate the networking stack from the application code and prevent unwanted modification of restricted areas of memory and registers resulting in increased stability and reliability of deployed solutions.

The STM32W108 has 128/192/256 Kbytes of embedded Flash memory and 8/12/16 Kbytes of integrated RAM for data and program storage. The STM32W108 HAL software employs an effective wear-leveling algorithm that optimizes the lifetime of the embedded Flash.

To maintain the strict timing requirements imposed by the ZigBee and IEEE 802.15.4-2003 standards, the STM32W108 integrates a number of MAC functions into the hardware. The MAC hardware handles automatic ACK transmission and reception, automatic backoff delay, and clear channel assessment for transmission, as well as automatic filtering of received packets. A packet trace interface is also integrated with the MAC, allowing complete, non-intrusive capture of all packets to and from the STM32W108.

The STM32W108 offers a number of advanced power management features that enable long battery life. A high-frequency internal RC oscillator allows the processor core to begin code execution quickly upon waking. Various deep sleep modes are available with less than 1 μA power consumption while retaining RAM contents. To support user-defined applications, on-chip peripherals include UART, SPI, I2C, ADC and general-purpose timers, as well as up to 24 GPIOs. Additionally, an integrated voltage regulator, power-on-reset circuit, and sleep timer are available.

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Errata Sheet
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Datasheet

Key Features

  • Complete system-on-chip
  • 32-bit ARM®Cortex™-M3 processor
  • 2.4 GHz IEEE 802.15.4 transceiver & lower MAC
  • 128/192/256-Kbyte Flash, 8/12/16-Kbyte RAM memory
  • AES128 encryption accelerator
  • Flexible ADC, SPI/UART/I2C serial communications, and general-purpose timers
  • 24 highly configurable GPIOs with Schmitt trigger inputs
  • Industry-leading ARM® Cortex™-M3 processor
  • Leading 32-bit processing performance
  • Highly efficient Thumb®-2 instruction set
  • Operation at 6, 12 or 24 MHz
  • Flexible nested vectored interrupt controller
  • Low power consumption, advanced management
  • Receive current (w/ CPU): 27 mA
  • Transmit current (w/ CPU, +3 dBm TX): 31 mA
  • Low deep sleep current, with retained RAM and GPIO: 400 nA/800 nA with/without sleep timer
  • Low-frequency internal RC oscillator for low-power sleep timing
  • High-frequency internal RC oscillator for fast (100 μs) processor start-up from sleep
  • Exceptional RF performance
  • Normal mode link budget up to 102 dB; configurable up to 107 dB
  • -99 dBm normal RX sensitivity; configurable to -100 dBm (1% PER, 20 byte packet)
  • +3 dB normal mode output power; configurable up to +8 dBm
  • Robust WiFi and Bluetooth coexistence
  • Innovative network and processor debug
  • Non-intrusive hardware packet trace
  • Serial wire/JTAG interface
  • Standard ARM debug capabilities: Flash patch & breakpoint; data watchpoint & trace; instrumentation trace macrocell
  • Application flexibility
  • Single voltage operation: 2.1-3.6 V with internal 1.8 V and 1.25 V regulators
  • Optional 32.768 kHz crystal for higher timer accuracy
  • Low external component count with single 24 MHz crystal
  • Support for external power amplifier
  • Small 7x7 mm 48-pin VFQFPN package or 6x6 mm 40-pin VFQFPN package

Circuit Diagram

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS6473: High-performance, IEEE 802.15.4 wireless system-on-chip with up to 256 Kbytes of embedded Flash memory
15.0 3,481 KB
pdf
DB0837: High-performance, 802.15.4 wireless system-on-chip
1.2 296 KB

Application Notes

Description Version Size
pdf
AN1181: Electrostatic discharge sensitivity measurement
1.4 59 KB
pdf
AN1709: EMC design guide for ST microcontrollers
1.7 657 KB
pdf
AN2639: Soldering recommendations and package information for Lead-free ECOPACK microcontrollers
3.2 448 KB
pdf
AN3206: PCB design guidelines for the STM32W108 platform
3.3 281 KB
pdf
AN3218: Adjacent channel rejection measurements for the STM32W108 platform
2.3 96 KB
pdf
AN3262: Using the over-the-air bootloader with STM32W108 devices
2.2 1,318 KB
pdf
AN3307: Guidelines for obtaining IEC 60335 Class B certification for any STM32 application
4.0 431 KB
pdf
AN3359: Low cost PCB antenna for 2.4GHz radio: Meander design
1.3 959 KB
pdf
AN4141: Migration and compatibility guidelines for STM32W108xx microcontroller applications based on the HAL
2.0 1,226 KB
pdf
AN4142: STM32W108xx datasheet bit and register naming migration
1.0 284 KB
pdf
AN4229: How to implement a vocoder solution using STM32 microcontrollers
1.0 467 KB

Technical Notes & Articles

Description Version Size
pdf
TN0830: How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions
1.1 97 KB

User Manual

Description Version Size
pdf
UM0894: STM32W-SK and STM32W-EXT starter and extension kits for STM32W108xx microcontrollers
6.0 1,049 KB

Programming Manual

Description Version Size
pdf
PM0073: STM32Wxxx Flash memory microcontrollers
5.0 247 KB

Release Notes

Description Version Size
pdf
RN0046: SimpleMAC library for STM32W108xx kits
10.0 109 KB
pdf
RN0047: STM32W108xx ZigBee® RF4CE library
4.0 86 KB

Errata Sheet

Description Version Size
pdf
ES0003: STM32W108xx device limitations
2.0 276 KB

Presentations & Training Material

Presentations

Description Version Size
pdf
STM32 - 32-bit ARM Cortex-M MCUs
1,755 KB
pdf
STM32 and STM8 embedded software solutions
1,771 KB
pdf
STM32W - an open architecture for wireless sensor networks
1.0.0 527 KB

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Publications and Collaterals

Flyer

Description Version Size
pdf
STM32 32-bit MCU family
2,651 KB
pdf
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1.0.0 378 KB

Brochure

Description Version Size
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Products and solutions for Factory automation and Control
4,504 KB
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1.0 665 KB
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Sample & Buy

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Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Order From STUnit Price (US$)*
@
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STM32W108HBU6NRNDVFQFPN 40 6x6x1.0Tray-4085-No availability reported, please contact our Sales officeEcopack2-
STM32W108HBU63NRNDVFQFPN 40 6x6x1.0Tray-4085-Distributor reported inventory date: 2014-11-19
Distributor NameRegionStockMin. order
RS COMPONENTSOrder NowEUROPE29255
Ecopack2-
STM32W108HBU63TRNRNDVFQFPN 40 6x6x1.0Tape And Reel-4085-Distributor reported inventory date: 2014-11-21
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE11
Ecopack2-
STM32W108HBU64TRNRNDVFQFPN 40 6x6x1.0Tape And Reel-4085-Distributor reported inventory date: 2014-11-21
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE29971
Ecopack2-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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