User Manual

XBee® Wi-Fi RF Modules
© 2012 Digi International, Inc. 15
Pin Assignment for the XBee Wi-Fi Surface Mount module
(Low-asserted signals are distinguished with a lower case n before the signal name.)
Pin # Name Direction Default State Description
1 GND - - Ground
2 VCC - - Power Supply
3 DIO13/DOUT Both Output UART Data Out
4 DIO14/DIN/Nconfig Both Input UART Data In
5 DIO12 Both - GPIO
6 nRESET Input - Module Reset
7 DIO10/PWM0 Both - GPIO
8 DIO11/PWM1 Both - GPIO
9 Reserved - - Do Not Connect
10 DIO8/nDTR/SLEEP_RQ Both - GPIO
11 GND - - Ground
12 DIO19/SPI_nATTN Both - GPIO/SPI Attention
13 GND - - Ground
14 DIO18/SPI_CLK Both - GPIO/SPI Clock
15 DIO17/SPI_nSSEL Both - GPIO/SPI Slave Select
16 DIO16/SPI_SI Both - GPIO/SPI Slave In
17 DIO15/SPI_SO Both - GPIO/SPI Slave Out
18 Reserved - - Do Not Connect
19 Reserved - - Do Not Connect
20
Reserved
-
-
Do Not Connect
21 Reserved - - Do Not Connect
22 GND - - Ground
23 Reserved - - Do Not Connect
24
DIO4
Both
-
GPIO
25 DIO7/nCTS Both Output
Clear-to-Send Flow Control/
GPIO
26 DIO9/On_nSLEEP Both - Module Status Indicator/GPIO
27 VREF - - NC
28 DIO5/ASSOC Both - Associate Indicator/GPIO
29 DIO6/nRTS Both Input
Request-to-Send Flow Control/
GPIO
30 DIO3/AD3 Both - Analog Input/GPIO
31 DIO2/AD2 Both - Analog Input/GPIO
32 DIO1/AD1 Both - Analog Input/GPIO
33
DIO0/AD0
Both
-
Analog Input/GPIO
34 Reserved - - Do Not Connect
35 GND - - Ground
36 RF Both - RF IO for RF Pad Variant
37
Reserved
-
-
Do Not Connect
Design Notes
The XBee modules do not specifically require any external circuitry or specific
connections for proper operation. However, there are some general design guidelines
that are recommended for help in troubleshooting and building a robust design.
Power Supply