RF / IR Encoder / Decoder Chipset
RF Evaluation Boards,
Pin Descriptions
Name
Pin
Number
Description
Switch input 0
Switch input 1
Switch input 2
Switch input 3
Ground reference connection
Data output
Cathode connection for directly
driving LED during transmission
Positive supply voltage connection
RF600E
RF600D
S0
S1
S2
S3
Vss
OP
LED
Vcc
1
2
3
4
5
6
7
8
S0-3
These are the switch inputs which when operated wake up the RF600E and cause transmission. They
may be switched directly to Vcc. Transmission occurs for the duration of the switch operation.
Vcc / Vss
The power supply needs to be a stable regulated voltage with <10mV ripple. Note that in idle mode the
transmitter current drain is typically only 100nA.
OP
Data Output, this is a standard CMOS / TTL output that may be connected directly to the data input pin of
the RF Module. In the event that this represents a load to Vcc then a buffer stage between the data output
and the RF module will be required.
LED
A direct LED drive with internal current limit of typically 1 mA operates when the RF600E is transmitting.
Typical Application Circuit Diagram for FM radio modules
Vcc
Sw 4
Sw 3
Sw 2
Sw 1
Transmit
LED
Pull Up Resistor
2K2
1
2
3
4
S0
S1
Vcc
LED
8
7
6
5
RF600E
S2
S3
DO
GND
Serial Data
Output
BC848
10K
RF Transmitte r
Not that a circuit constructed using AM radio modules does not need to have transistor BC848, resistor
10K or 2k2 Pull up resistor fitted.
DS600-9 Sept ‘04
©2004 Reg. No. 227 4001, ENGLAND
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