SMART RADIO TRANSCEIVER
RF650
1 Module Connections
Vcc 1
GND 2
GND 3
GND 4
ANT 5
GND 6
NC 7
16 CTS
15 RTS
14 Config
13 DR2
12 DR1
11 Rx
10 Tx
NC 8
9
PD
Pin Descriptions
Pin
Number
Name
Type
Description
Positive supply voltage connection. Decouple with 100n ceramic
capacitor to ground.
Connect to 0 volts.
Nominal 50 ohm input/output impedance capacitively isolated
from the internal circuit.
1
Vcc
GND
Power
Power
2, 3, 4, 6
5
Antenna
In / Out
7, 8
9
-
No Connection.
nc
In
Power Down pin. Take low for low power standby mode.
PD
Transmit data input from host controller.
Data input to the transmitter can be directly interfaced to CMOS
logic drive operating on the same supply voltage as the
transceiver.
Received data output to host controller (CMOS logic out)
representing true data as supplied to the transmitter.
10
Tx
Rx
In
11
Out
12, 13
14
In
In
Host Data Rate selection.
Data Rate
High for normal operation, low to configure module.
Configuration
Logic ‘0’ is Request To Send.
15
16
RTS
CTS
In
Take low when the host is ready to send data to the module or is
ready to receive data from the module.
Logic ‘0’ is Clear To Send.
Out
Taken high when the module is busy.
Host Data Rate Selection
DR2 (pin 13)
DR1 (pin12)
Baud Rate
0
0
4,800
0
1
1
1
0
1
9,600
19,200
38,400
DS650-6 June ‘06
©2006 RF Solutions Ltd, www.rfsolutions.co.uk
Tel 01273 898000 Fax 01273 480661
Page 3
RFSOLUTIONS [ RFSOLUTIONS.LTD ]
