SmartRadio Transmitter / Receiver
RF620R - Pin Description
Pin No
1
2
3
7
11
13
14
15
16
17
19
20
21
22
23
24
25
Name
Vcc-RF
GND-RF
ANT
GND-RF
GND-AF
RSSI
O/P-AF
Vcc-digital
GND-digital
MCLR
\Serial Data
\RTS
\Learn
&
\LED
spare
spare
O/P1
O/P2
Description
+5V Supply Voltage – RF section.
RF Ground.
Connect Antenna to this input.
RF Ground.
AF Ground.
Received Signal Strength Indicator (RSSI)
Raw Data output from RF receiver (CMOS/TTL signal)
+5V Supply Voltage – digital section.
AF Ground – digital section.
Pulls Microcontroller into reset if connected to Ground
May be left unconnected if not required (internally tied high)
Serial data output, active low
/RTS input, active low
RF620T
RF620R
Dual function:
Programming Switch input, When grounded places the module into ‘learn’ mode.
External LED output, Indicates data reception, and programming status.
leave unconnected
leave unconnected
Data Output 1. (has a 220Ω series resistor)
Data Output 2. (has a 220Ω series resistor)
RF620R - Typical application circuit
LED drive example
O/P 2
470R
O/P 1
RF620R
1
3
7
11
15
20
22
25
Vcc
1k
Vcc
Status
LED
RTS input
Serial data output,
CMOS/TTL Level
GND
Learn Switch
DS620-3 Jan ‘07
©2007 Reg. No. 227 4001, ENGLAND
Page 3
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