Wireless module offers easy way to implement Bluetooth connectivity

The STMicroelectronics STM32WBA5MMG, a complete multi-protocol system including crystals and antenna, is supplied pre-certified, and is backed by a software package including radio protocol stacks.

The STMicroelectronics STM32WBA5MMG is a complete 2.4 GHz wireless module which supports the implementation of Bluetooth® Low Energy v5.4, Zigbee® 3.0 and OpenThread connectivity in an embedded system design. 

 

Based on the STM32WBA55UG wireless microcontroller, the module is supplied with royalty-free RF protocol software, and is suitable for use by any developer, no matter the level of their RF expertise and knowledge. The module incorporates the external components required to implement a short-range wireless transceiver, including 32 MHz and 32 kHz crystals and an integrated antenna. An external antenna option is also available.  

 

The use of a module provides for accelerated time to market as the device can be implemented in a simple, low-cost 2-layer PCB design. It is supplied with a comprehensive set of certifications, including CE, FCC, ISED, MIC, RoHS and REACH.  

 

The module is suitable for low-power applications requiring Bluetooth Low Energy connectivity. It also supports IEEE 802.15.4 radio signaling for Thread and Zigbee networking, including in concurrent communication mode.  

 

The STM32WBA5MMG provides best-in-class RF performance thanks to its good receiver sensitivity and high output signal power. Advanced security features protect both the module and its data.  

 

Developers working with the STM32WBA5MMG can benefit from the STM32CubeWBA, a free software package which includes a hardware abstraction layer, low-level application programming interfaces, Arm® CMSIS support, a file system, real-time operating system, RF protocol stacks, and code examples.  

 

The STM32WBA5MMG is supplied in a SiP-LGA76 package with a 12.5 mm x 8.0 mm footprint.  

 

Features

  • Arm Cortex®-M33 CPU with TrustZone execution environment 
  • 1 Mbyte Flash memory with error correction code 
  • 128 kbytes of SRAM  
    • Includes 64 kbytes with parity check 
  • 512 bytes of one-time programmable memory 
  • Power-supply range: 1.71 V to 3.6 V  
  • SMPS and ultra-low power modes for longer battery run-time 
  • Output power up to +10 dBm programmable in 1 dB steps 
  • Receive sensitivity: 
    • -96 dBm for Bluetooth Low Energy networking at 1 Mbit/s 
    • -97.5 dBm for IEEE 802.15.4 at 250 kbits/s 
  • Security features:  
    • Supports secure firmware installation  
    • AES cryptographic accelerators 
    • True random number generator 
    • Flash read-out and hide protection  
    • Tamper detection 

Applications

  • Smart thermostats 
  • Tracking devices 
  • Smart chargers 
  • Headsets 
  • Power tools 
  • Smart meters 
  • Building automation 
  • Smart city equipment 

Development Kit

Part Number:

B-WBA5M-WPAN

The B-WBA5M-WPAN STM32WBA connectivity expansion board from STMicroelectronics provides a flexible way to evaluate the STM32WBA5MMGH6 module. 

 

The board includes a USB Type-C® connector for power only. It also integrates an M.2 E‑Key connector, turning it into an M.2 E‑Key daughterboard which provides a Bluetooth® interface to a host board that has an M.2 E‑Key host connector. The M.2 E‑Key connector is compatible with the PCI-SIG standard, and provides UART, SPI, I2C, and SAI interfaces for communication with the host. 

 

The B-WBA5M-WPAN board is supported by the STM32CubeWBA software package.  

 

Key features include:  

  • 256 kbit serial EEPROM 
  • Accurate MEMS temperature sensor 
  • 3D accelerometer and 3D gyroscope 
  • User LED 
  • User and reset push buttons 

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