XBee‐PRO®XSCOEMRFModules
©2010DigiInternational,Inc. 7
1.3. Pin Signals
Figure1‐01. XBee‐PROXSCOEMRFModulePinNumbers(topview,shieldunderneath)
Table1‐02. J1PinSignalDescriptions
(Low‐assertedsignalsdistinguishedwithahorizontallineoversignalname.)
Module Pin Public Signal Notes I/O When
Active Function
1 VCC I 3.0VDC to 3.6VDC
2 DO (Data Out) O n/a Serial data exiting the module (to the UART host).
Refer to the Serial Communications section for more
information
3 DI (Data In I n/a Serial data entering the module (from UART host).
Refer to the Serial Communications section for more
information.
4 DO3 / RX LED O high PinisdrivenhighduringRFdatareception;otherwise,
the pin is driven low. Refer to the CD Command
section to enable.
5 Reset Has a
10kpull
up
resistor I/O low Re-boot module.(minimum pulse is 90us) Open Drain
configuration. Module will drive reset line low
momentarily on reboot and power up.
6 Config Has a
100k
pull up
resistor I low / high Pin can be used as a backup method for entering
Command Mode during power-up. Primary method is
with "+++". Refer to the AT Commands section for
more information.
7 O Driven high Do not Connect
8 NC Do not Connect
9 DI3 / SLEEP Has a
100k
pull up
resistor Ihigh By default, DI3 pin is not used. To configure this pin to
support Sleep Modes, refer to the Sleep Mode,SM
Command and PW Command sections.
10 GND Ground
11 O Driven high Do not Connect
12 DO2 / CTS / RS-485
Enable Olow
CTS(clear-to-send) flow control - When pin is driven
low, UART host is permitted to send serial data to the
module. Refer to the Serial Communications and CS
Command sections for more information.
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RS-485 Enable - To configure this pin to enable RS-
485 (2-wire or 4-wire) communications, refer to the
Serial Communications and CS Command sections.
13 ON / Sleep Ohigh high = Indicates power is on and module is not in
Sleep Mode. Low = Sleep mode or module is
unpowered
14 VREF I n/a Not used on this module. For compatibility with other
XBee modules, we recommend connecting this pin to
a voltage reference if Analog sampling is desired.
Otherwise, connect toGND.
15 TX / PWR O n/a low=TX- Pin pulses low during transmission
--------------------------------------------------------------
high = PWR - Indicates power is onand module is not
in Sleep Mode
16 DI2 / RTS / CMD
Has a
100k
pull
down
resistor
Ilow
RTS (request-to-send) flow control - By default, this
pin is not used. To configure this pin to regulate the
flow of serial data exiting the module, refer to the
Seri al C omm uni ca ti on s a nd R T Co mm an d s ec ti on s.
---------------------------------------------------------------
CMD -Refer to Binary Commands and RT
Commandsections to enable binary command
programming.
17 O Driven low Do not Connect
18 O Driven low Do not Connect
