Digi XBee3 - Page 58

Hardware Pin signals
Digi XBee3 Cellular LTE-M Global Smart Modem User Guide
58
The following table shows the pin assignments for the through-hole device. In the table, low-asserted
signals have a horizontal line above signal name.
Pin Name Direction Default Description
5 V
Tolerant
1
V
CC
Power supply No
2 DOUT Output Output UART Data Out Yes
3
DIN / CONFIG
Input Input UART Data In Yes
4 DIO12 / SPI_
MISO
Either Disabled Digital I/O 12 or SPI Slave Output line
1
Yes
5 RESET Input
No
6 PWM0 / RSSI /
DIO10/USB_
VBUS
Either Output PWM Output 0 / RX Signal Strength
Indicator / Digital I/O 10
Yes
7
PWM1 /
DIO11/USB D+
Either Disabled
PWM Output 1 /
Digital I/O 11 or USB
Direct D+ line
No
8 USB D- USB Direct D- line No
9
DTR / SLEEP_RQ/
DIO8
Either Disabled Pin Sleep Control Line or Digital I/O 8 Yes
10 GND Ground No
11 DIO4 / SPI_MOSI Either Disabled Digital I/O 4 or SPI Slave Input Line Yes
12
CTS / DIO7
Either Output Output Clear-to-Send Flow Control or
Digital I/O 7
Yes
13
ON /SLEEP/DIO9
Output Output Module Status Indicator or Digital I/O 9 Yes
14 VREF - Feature not supported on this device.
Used on other XBee devices for analog
voltage reference.
Yes
15 Associate / DIO5 Either Output Associated Indicator, Digital I/O 5 Yes
16
RTS / DIO6
Either Disabled Input Request-to-Send Flow Control,
Digital I/O 6
Yes
17
AD3/DIO3/SPI_
SS
Either Disabled Analog Input 3 or Digital I/O 3, SPI low
enabled select line
Yes
18 AD2 / DIO2 / SPI_
CLK
Either Disabled Analog Input 2 or Digital I/O 2, SPI Clock
line
Yes
1
DIO12/SPI_MISO and DIO4/SPI_MOSI (pin 4 and pin 11) may optionally be configured as a secondary UART
serial port using MicroPython. See the Digi MicroPython Programming Guide for details.