Technical specifications Serial communication specifications
XBee®-PRO 900HP/XSC RF Modules
18
Country Approval
Australia RCM
Brazil ANATEL 3727-12-1209
Singapore License No. DA105737 (XB900HP only)
Mexico IFETEL (XB900HP listed in Mexico
IFETEL)
RoHS2 Compliant
Serial communication specifications
The XBee-PRO 900HP RF Module supports both Universal Asynchronous Receiver / Transmitter
(UART) and Serial Peripheral Interface (SPI)serial connections.
UART pin assignments
UART pins Device pin number
DOUT 2
DIN / CONFIG 3
CTS / DIO7 12
RTS / DIO6 16
SPI pin assignments
SPI pins Device pin number
SPI_SCLK / DIO18 18
SPI_SSEL / DIO17 17
SPI_MOSI / DIO16 11
SPI_MISO / DIO15 4
SPI_ATTN / DIO1 19
GPIO specifications
XBee devices have 15 General Purpose Input/Output (GPIO) ports available. The precise list depends
on the device configuration as some devices use the GPIO pins for purposes such as serial
communication. The following table shows the electrical specifications for the GPIO pins.
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