Digi XBee 3 Cellular LTE-M User Manual page 111

Hardware
Number Item
3 Battery
Connector
4 USB-C Connector Provides power and UART communications for the XBEE and
5 LED indicator
6 User Buttons
7 Breakout
Connector
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
Description
If desired, a battery can be attached to provide power to the
development board. The voltage can range from 2 V to 5 V. The
positive terminal is on the left.
If the USB-C connector is connected to a computer, the power will
be provided through the USB-C connector and not the battery
connector.
WARNING! Battery current discharge rating must be
enough to support 5 W or more.
WARNING! There is no circuit to prevent over discharge
of battery. Battery must contain its own protection
circuitry.
WARNING! Move UART switches to the OFF position
when using battery or external power or for when the
XBee and the USB-C connector is not powering the UART.
Note Power supply outputs 3.3 V to XBee regardless of input voltage
as long as current requirement can be met to achieve power
consumption of devices.
development board.
Note Requires USB 3.0 to supply 1 amp of required current. USB 2.0
ports that cannot supply at least 1 amp cannot be used.
Red: UART DOUT (modem sending serial/UART data to host)
Green: UART DIN (modem receiving serial/UART data from host)
White: ON/SLP/DIO9
Blue: Connection Status/DIO5
Yellow: RSSI/PWM0/DIO10
Comm DIO0 Button connects the Commissioning/DIO0 pin to GND
when pressed.
RESET button resets the XBee module when pressed.
This 40 pin connects to various XBee pins as shown on the silkscreen
on the bottom of the board.
Development boards
111