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2. Hardware Overview
2.1 Hardware Layout
The layout of the EFR32xG21B 2.4 GHz 10 dBm Wireless Starter Kit is shown in the figure below.
Radio Board Breakout Pads
On-board USB and
Ethernet J-Link
Debugger
USB-serial-port
Packet-trace
Advanced Energy
Monitoring
Battery or
USB power
Ultra-low power 128x128
pixel memory LCD,
buttons and LEDs
silabs.com | Building a more connected world.
UG428: EFR32xG21B 2.4 GHz 10 dBm Wireless Starter Kit User's Guide
Figure 2.1. Kit Hardware Layout
Plug-in Radio Board
Si7021 Humidity and
Temperature Sensor
(Not available to BRD4181C)
EXP-header for
expansion boards
ARM Coresight 19-pin
trace/debug header
Serial-port, packet trace and Advanced
Energy Monitoring header
Hardware Overview
Rev. 1.0 | 5
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