Hardware
Antenna connections
Digi XBee Cellular LTE Cat 1 Embedded Modem User Guide
33
Pin
Name
Direction
Default
Description
7
PWM1 / DIO11
Either
PWM Output 1 / Digital I/O
11
8
[reserved]
Do not connect
9
DTR / SLEEP_RQ/ DIO8
Pin Sleep Control Line or
Digital I/O 8
10
GND
Ground
11
DIO4
Either
Digital I/O 4
12
CTS / DIO7
Either
Output
Output Clear-to-Send Flow
Control or Digital I/O 7
13
ON /SLEEP/DIO9
Output
Output
Module Status Indicator or
Digital I/O 9
14
VREF
Unused
This line is not connected.
It is used on other XBee
products.
15
Associate / DIO5
Either
Output
Associated Indicator,
Digital I/O 5
16
RTS / DIO6
Either
Disabled
Input Request-to-Send
Flow Control, Digital I/O 6
17
AD3 / DIO3
Either
Disabled
Analog Input 3 or Digital
I/O 3
18
AD2 / DIO2
Either
Disabled
Analog Input 2 or Digital
I/O 2
19
AD1 / DIO1
Either
Disabled
Analog Input 1 or Digital
I/O 1
20
AD0 / DIO0
Either
Input
Analog Input 0, Digital I/O
0
Pin connection recommendations
The only required pin connections are VCC, GND, DIN, DOUT, RTS, DTR and RESET. Firmware updates
require access to these pins.
Antenna connections
CAUTION!
The XBee Cellular Modem will not function properly with only the secondary
antenna port connected!
The XBee Cellular Modem has two U.FL antenna ports; a primary on the upper left of the board and a
secondary port on the upper right, see the drawing below. You must connect the primary port and the