Silicon Labs

Thunderboard BG22 Features

Small Form Factor Thunderboard

• EXP compatible breakouts

Target device

• EFR32BG22
  • Secure Bluetooth 5.2 SoCs for high-volume products
  • 76.8 MHz, ARM Cortex-M33 with 512 kB of flash and 32 kB RAM
  • Bluetooth 5.2 Radio with supported for direction finding and LE coded PHY
• 38.4 MHz HFXO crystal
• 32.768 kHz LFXO crystal
• 2.4 GHz matching network and chip antenna

On-board Board controller

• J-Link debugger
  • SWD physical layer
• Packet trace over UART/async protocol
• Virtual COM with hardware flow control

USB Micro-B connector for debug connection

User interface features:

• 1x button (with EM2 wake-up)
• 1x LED

Data storage / OTA support

• 8 Mbit SPI flash

Power save features

• Controllable and separate power domain(s) for sensors

Mobile app for Android and iOS

• View sensor data, control LEDs and detect button pushes
• iOS app implemented in swift
• Android app implemented in native code
• Source code available at GitHub
  

Sensors

• Relative humidity & temperature sensor: Si7021
• UV and ambient light sensor: Si1133
• Hall effect sensor: Si7210
• 6-axis IMU: Invensense ICM-20648

Mini Simplicity Debug Connector (SLSDA001A compatible) with access to:

• AEM
• PTI
• VCOM
• SWD