Digi International Inc XBEEPRO2 Manuel D’Utilisation

• Signal Direction is specified with respect to the module
• See Design Notes section below for details on pin connections.

Pin Assignments for the XBee/XBee‐PRO Modules

(Low‐asserted signals are distinguished with a horizontal line above signal name.)

1

VCC

-

-

Power supply

2

DOUT

Output

Output

UART Data Out

3

DIN / CONFIG 

Input

Input

UART Data In

4

DIO12

Both

Disabled

Digital I/O 12

5

RESET Both

Open-Collector with 

pull-up

Module Reset (reset pulse must be at least 200 

ns)

6

 RSSI PWM / DIO10

Both

Output

RX Signal Strength Indicator / Digital IO

7

 DIO11

Both

Input

Digital I/O 11

8

[reserved]

-

Disabled

Do not connect

9

DTR / SLEEP_RQ/ DIO8

Both

Input

Pin Sleep Control Line or Digital IO 8

10

GND

-

-

Ground

11

DIO4

Both

Disabled

Digital I/O 4

12

CTS  / DIO7

Both

Output

Clear-to-Send Flow Control or Digital I/O 7. CTS, if 

enabled, is an output.

13

ON / SLEEP 

Output

Output

Module Status Indicator or Digital I/O 9

14

VREF

Input

-

Not used for EM250. Used for programmable 

secondary processor.

For compatibility with other XBEE modules, we 

recommend connecting this pin voltage reference 

if Analog sampling is desired. 

Otherwise, connect to GND.

15

Associate / DIO5

Both

Output

Associated Indicator, Digital I/O 5

16

RTS / DIO6 

Both

Input

Request-to-Send Flow Control, Digital I/O 6. RTS, 

if enabled, is an input.

17

AD3 / DIO3

Both

Disabled

Analog Input 3 or Digital I/O 3

18

AD2 / DIO2

Both

Disabled

Analog Input 2 or Digital I/O 2

19

AD1 / DIO1

Both

Disabled

Analog Input 1 or Digital I/O 1

20

AD0 / DIO0 / 

Commissioning Button

Both

Disabled

Analog Input 0, Digital IO 0, or Commissioning 

Button