Xbee interface – ThingMagic Mercury xPRESS Platform v1.7 User Manual
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A D I V I S I O N O F T R I M B L E
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Hardware Reference Guide
A socket is provided for an optional “coin battery” (CR1220, 3 V). The purpose of this battery
is to maintain the real-time clocks and timers when all other power sources are removed from
the xPRESS motherboard.
xBee Interface
Two xBee interfaces are offered on the xPRESS motherboard. This will permit the use of off the
shelf modules for Bluetooth, WiFi, GPS, Zigbee, and the like without designing custom modules.
This connector is comprised of two parallel rows of standard 10-pin headers.
Pin assignments that have a compound designation (i.e. “TXD1/2”) indicate that the first
connector carries “TXD1” on that pin and the second connector carries “TXD2”.
Signal
Pin
Pin
Signal
V_3R3
1
20
NC
RXD1/2
2
19
NC
TXD1/2
3
18
NC
NC
4
17
NC
GPIO2/3
5
16
CTS1/2
NC
6
15
GPIO0/1
NC
7
14
NC
NC
8
13
GPIO4/5
STATUSB1/2
9
12
RTS1/2
GND
10
11
NC