Hardware
Pin signals
XBee Wi-Fi RF Module User Guide
25
Pin
#
Name
Direction
Default
state
Description
12
DIO7/CTS
Both
Output
Clear-to-send flow control/GPIO
13
DIO9/ON_SLEEP
Both
Output
Module status indicator/GPIO
14
VREF
-
-
Not connected
15
DIO5/ASSOCIATE
Both
Output
Associate indicator/GPIO
16
DIO6/RTS
Both
Input
Request-to-send flow control/GPIO
17
DIO3/AD3 /SPI_SSEL
Both
Disabled
Analog input/GPIO/SPI slave select
18
DIO2/AD2 /SPI_CLK
Both
Disabled
Analog input/GPIO/SPI clock
19
DIO1/AD1 /SPI_ATTN
Both
Disabled
Analog input/GPIO/SPI attention
20
DIO0/AD0/CB
Both
Disabled
Analog Input/Commissioning
Button/GPIO
The following table describes the pin assignments for the surface-mount device. A horizontal line
above the signal name indicates low-asserted signals.
Pin
#
Name
Direction
Default
state
Description
1
GND
-
-
Ground
2
VCC
-
-
Power supply
3
DIO13/DOUT
Both
Output
UART data out
4
DIO14/DIN/CONFIG
Both
Input
UART data in
5
DIO12
Both
Disabled
GPIO
6
RESET
Input
Input
Module reset
7
DIO10/ RSSI
PWM/PWM0
Both
Output
RX signal strength indicator/GPIO
8
DIO11/PWM1
Both
Disabled
GPIO
9
Reserved
-
-
Do not connect
10
DIO8/DTR/SLEEP_RQ
Both
Input
GPIO
11
GND
-
-
Ground
12
DIO19/SPI_ATTN
Both
Output
GPIO/SPI attention
13
GND
-
-
Ground
14
DIO18/SPI_CLK
Both
Input
GPIO/SPI clock
15
DIO17/SPI_SSEL
Both
Input
GPIO/SPI slave select