Reference Manual

General XBee 3 specifications Serial communication specifications
Digi XBee® 3 RF Module Hardware Reference Manual
10
Serial communication specifications
The XBee 3 RF Module supports Universal Asynchronous Receiver / Transmitter (UART) and Serial
Peripheral Interface (SPI)serial connections.
UART pin assignments
UART pins Device pin number
XBee 3 micro-mount
XBee 3 surface-mount XBee 3 through-hole
DOUT/DIO13 3
3 2
DIN / CONFIG/DIO14 4
4 3
CTS / DIO7 24
25 12
RTS/ DIO6 27
29 16
SPI pin assignments
SPI pins Device pin number
XBee 3 micro-mount
XBee 3 surface-mount XBee 3 through-hole
SPI_CLK 13 14 18
SPI_SSEL
14 15 17
SPI_MOSI 15 16 11
SPI_MISO 16 17 4
SPI_ATTN
11 12 19
GPIO specifications
XBee 3 RF Modules have 15 General Purpose Input / Output (GPIO) ports available. The exact list
depends on the device configuration as some GPIO pads are used for purposes such as serial
communication.
GPIO electrical specification Value
Voltage - supply 2.1 - 3.6 V
Low switching threshold 0.3 x VCC
High switching threshold 0.7 x VCC
Input pull-up resistor value
40 kΩ (typical)