Description
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
Thunderboard Layout
