RDF1-433 RF Solutions

RF RECEIVER DECODER RDF1-433 Features Complete FM Receiver and Decoder. Small Form Factor Range up to 200 Metres Easy Learn Transmitter Feature. Learns 40 transmitter Switches 4 Digital and 1 Serial Data outputs Outputs, Momentary or Latching. Minimal external components Direct Led Drive Shows Data Reception Secure Data Protocol 5V Supply CE Compliant for Licence Free Use Compatible with RF800 series Encoder ICs HORNET, FIREFLY, and 205 series transmitters Applications Remote Control Radio Telemetry RFID Description The RDF1 is a complete FM receiver and decoder module in one, providing a complete radio system with up to four digital outputs and single serial data output when used with an RF Solutions FIREFLY, HORNET or 205 series Handheld transmitters. Dependant on the transmitter, a system using the RDF1 can achieve up to 200m range. The RDF1 module consists of a front end super-heterodyne receiver and an embedded microcontroller which decodes the RF string for a compatible transmitter and outputs to 4 telemetry lines and as serial data. The module has an easy-to-use LEARN facility, and is capable of storing up to 40 pairings within its internal in non volatile memory (EEPROM). Part Numbers Compatible Transmitters Part Number Description and Encoders FIREFLY HORNET Superhetrodyne Receiver Decoder FM, 433MHz RDF1-433 205 RF800 Chipsets DS RDF-a Sept 08 2008 REG No 277 4001, England. Page 1 SERIAL MOM/LTCH1 MOM/LTCH2 OP1 OP2 OP3 OP4 LRN/LED N/C GND N/C VCC RSSI GND ANT GND VCC RF RECEIVER DECODER RDF1-433 1 2 3 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin Description Pin No Name I/O Description The power supply needs to be a stable regulated 1 VCC - 5V with <10mV ripple 2 GND - RF ground 3 RFIN I RF input (Antenna) Connection 4 6 N/C N/A Not Connected 7 GND - RF Ground Connection 8 RSSI O Received signal strength indicator 9 VCC - 5 V Power Supply 10 N/C N/A Not Connected 11 GND - Ground Connection 12 N/C N/A Not Connected Multi Function Pin This input is used to set the decoder module to 13 LRN/LED I/O Learn Mode and for the Erase Function it is also used to drive the Status LED. 14 OP4 O These outputs normally high and are asserted 15 OP3 O LOW when the relevant inputs of a learnt transmit device are asserted. 16 OP2 O 17 OP1 O These pins are read on power up to set the action 18 MOMLTCH2 I of outputs 1-4. Momentary action is set by a connection to ground. Latching is set using open 19 MOMLTCH1 I circuit. See table on P4 In normal run mode this pin outputs serial data on 20 SERIAL O reception of a valid data string. DS RDF-a Sept 08 2008 REG No 277 4001, England. Page 2