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d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 1 1 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 rf803d 1 8 76 3 2 4 5 features ? 3 digital i/o ? serial data output ? connects directly to rf modules ? easy enc / dec pairing function ? minimal external components required ? performs all encoding/decoding of data for reliable operation . ? achieves maximum range from rf modules ? fast activation / deactivation time ? up to 15 transmitter pairings ? compatible with firefly, fireblade and 205 series t ransmitters ? sleep mode, for battery saving ? one to many / many to one relationship. applications ? remote control ? radio telemetry ? rfid description the rf803 series are encoder and decoder devices. w hen combined with a radio transmitter/receiver they may be used to create a r emote control system with up to 3 i/o lines. the decoder ic incorporates an ?easy learn? pairing procedure to create a relationship between encoder and decoder. rf800 series ics perform all the necessary data man ipulation and encoding/decoding of data for an optimum range reliable radio link whilst pro viding a simple user interface. in addition all rf800 series chipsets compatible wi th the rf solutions range of remote control transmitter or receiver meaning that custom designs using any rf800 part can be used with an off the shelf counterpart. part number description packages available RF803E encoder ic 6 pin sot23 8 pin pdip rf803d decoder ic, 8 pin 8 pin soic 8 pin pdip RF803E 1 6 5 4 3 2
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 2 2 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 transmitter encoder RF803E functional description the RF803E is a simple device to use. as shown in t he application circuit below, it requires only the addition of input switches and rf circuitry for use as the transmitter in the end application. transmission is automatic without user intervention . on detecting a switch closure the RF803E will wake up transmit a secure data packet on the tx output. the RF803E uses a fully balanced manchester encoded data protocol designed for optimum use of the radio transmission path. each RF803E is programmed at the time of manufactur e with a unique 16-bit serial number, which provides a secure way of addressing rf800 series de vices. this provides up to 65,536 possible addresses. compatibility with rf solutions receivers the rf803 series are compatible with the firefly/fi reblade series and 210-433/525/458 series of ready to operate receiver decoder units. this enables a designer to easily integrate a remot e control function into an application using a ready made receiver
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 3 3 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 pin descriptions RF803E see page 8 for typical application circuit RF803E pdip dfn 1 8 76 3 2 vcc ip 2 tx gnd n/c 4 5 ip1 ip 3 n/c sot23 pin number name input / output description 1 ip 1 ip switch input 1 (active low) 3 ip 2 ip switch input 2 (active low) 6 ip 3 ip switch input 3 (active low) 2 gnd ip supply gnd 4 tx op data output 5 vcc ip supply voltage pdip pin number name input / output description 1 - - not connected 2 vcc ip supply voltage 3 tx op data output 4 ip 2 ip switch input 2 (active low) 5 ip1 ip switch input 1 (active low) 6 - - not connected 7 gdn op ground connection 8 ip3 ip switch input 3 (active low) ip 1-3 these are the switch inputs which when operated wak e up the RF803E and cause transmission. they may be switched directly to ground. transmissi on occurs for the duration of the switch operation. vcc the power supply needs to be a stable regulated vol tage between 2.5 and 5.5v with <10mv ripple. note that in idle mode the transmitter current drai n is typically only 100na. gnd ground connection tx data output, this is a standard cmos / ttl output t hat may be connected directly to the data input pin of the rf module. in the event that this repres ents a load to vcc then a buffer stage between the data output and the rf module will be required.
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 4 4 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 receiver decoder rf803d functional description the rf803d is simple to use. as shown in the typica l application circuits, in the stand alone operation the rf803d has the capability to learn up to 15 unique RF803E transmitters. rf806d vcc gnd o/p 1 o/p 3 o/p 2 data in serial data learn mom/latch status led the rf803d is connected directly to the data output of a radio receiver module and upon detection of a valid data packet it will decode the data stre am. the rf803d will then assert its digital outputs which will match the state of the RF803E encoders? learnt at the time of transmission. the digital outputs may be configured as latching o r momentary action. latch = the output will change state on each succes sive transmit of the encoder. momentary = the output will only operate for as lon g as the RF803E encoder is transmitting. the rf803d requires only the addition of the follow ing components 1. a ?learn? switch which is used in the process of learning a transmi tter/encoder to the decoder and also to initiate erasure of encoder information . 2. an led which indicates the status of the learn process, t he erase process and also data reception status. 3. an option link which configures the action of the digital outputs . this input may simply be tied to vcc or gnd. compatibility with rf solutions transmitters: the rf803 series are compatible with the firefly/fi reblade series and 205 series of ready to operate transmitter encoders (when using fm) this enables a designer to integrate a remote contr ol function into an application easily, by using a ready made transmitter.
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 5 5 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 pin descriptions rf803d see page 8 for application circuit example soic / pdip pin number name input / output description 7 op1 out digital output 1 6 op2 out digital output 2 5 op3 out digital output 3 1 vcc in supply voltage 8 vss in supply gnd 2 sd/ml in/out serial data output / momentary / latching se tting 3 lrn in/out learn / erase function 4 rx in rx data input vcc 2.5-5.5v dc input. the power supply needs to be a s table regulated voltage with <10mv ripple gnd ground connection. op1-3 these outputs are asserted low when the relevant in puts (s1 ? s3) on the RF803E are asserted. (see latch/unlatch information under ?lkin?). rx data this is the data input to the decoder it may be con nected directly to the rf receiver module. lrn this input is used to set the decoder module to ?le arn mode? and for the ?erase function? and is also used to drive the status led. serial / op timing multi-functional pin this pin is read on power up to sets the action of outputs 1-3, momentary action is set by a connection to ground through a 2k2 ohm resistor, la tching is set using open circuit. in normal run mode this pin outputs serial data on reception of a valid data string.
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 6 6 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 system and functional operation pairing a transmitter to a receiver each transmitter has a unique identity. each time a switch is pressed, the transmitter emits a highly secure rf signal. the receiver can learn this signa l and allocate to an output. any transmitter switch may be paired to one or many of the receiver?s outputs, or a transmitter single switch may be paired to any number of receiv er?s outputs to enable a powerful and flexible remote control system. the only limitation is that each receiver has a max imum capacity of 15 pairings, these can be from the same or any number of transmitters. hint: the same transmitter may be taught to any num ber of receivers to create ?master keys?. learn mode : learn input activation is achieved by pulling thi s input to gnd briefly to learn a new transmitter switch follow this proce dure (as application circuit) any encoder input can be learnt to one or many of t he receiver outputs. each input must be learnt to each output individual ly by following this procedure: 1. select the receiver output to learn: a. briefly operate the receiver learn switch (sw1) once b. the learn led will flash once to indicate that o utput 1 is selected c. after the led stops flashing, press the learn sw itch again to select the next output channel d. repeat step c until the required output is selec ted. 2. operate whichever input on the encoder you want to learn to the selected decoder output. 3. the learn led will then illuminate, within 10sec s, operate the same encoder input again. 4. the learn led will then flash to indicate learni ng is complete. erase mode (as application circuit) : is achieved by pulling this input to gnd for >8 s econds. this causes the internal eeprom to be erased of all pre- learnt RF803E encoders. during erase the learn led will activate, it will e xtinguish when erase is complete. mom / latch this high impedance input is used to set the digita l outputs to momentary or latched actions lkin status digital outputs function open latching closed momentary serial data output the rf803d has a serial data output. this outputs t he serial number, button and battery status of the transmitter encoder (RF803E). this data may be fed directly to a microcontroller or rs232 type driver circuit which may then be fed directly to a pc serial port. serial data is output initially and again every ? s econd whilst data is being received from the RF803E transmitter. i.e. this output is valid regar dless of whether the RF803E encoder has been learnt to the rf803d decoder or not. the serial dat a packet contains a learn bit to show if an encoder input is learnt.
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 7 7 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 serial data format serial data is sent every 1/2 second as a stream of 7 bytes at 9.6k baud. the serial data format is: 8 data bits with 1 stop bit, no parity. serial data is output form the decoder chip wheneve r a valid data packet from an rf80n or other compatible rf solutions transmitter is received reg ardless of learn output from serial data pin n n x x stat $0d $0a lf line feed (last character) cr carriage return battery status / learn status encoder input information encoder serial number 7 bytes of data transmitted encoder serial number [nn] : made up of two 8-bit bytes where the most signif icant byte is transmitted first. this provides a total of 65,536 possible serial num bers. example: 12ab (hexadecimal) or 0001 0010 1010 101 1 (binary) encoder input information [xx]: made up of two 8-bit bytes. the high order byte is sent first representing inpu ts 16 down to 9 where the msb is input 16 and the lsb is input 9. the low order byte is sent next representing inputs 8 down to 1 where the msb is input 8 and the lsb is input 1. a bit at state 1 represents an encoder input as act ive. using this method inputs can be multiplexed giving maximum versatility. example: 00000000 00001000 - shows input 4 active. 00000001 00000000 ? shows input 9 active 10000001 00000001 ? shows inputs 16, 9 and 1 acti ve status [stat]: the status byte is made up of an 8-bit byte as foll ows: bit description details bit-7 down to 2 reserved for future usage bit 1 learn status 1 = encoder has been learnt bit 0 battery status 0 = encoder battery is ok 1 = encoder battery is low example: 00000010 = encoder battery ok, encoder has been learnt 00000001 = encoder battery low, encode r has not been learnt
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 8 8 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 carriage return [cr] and line feed [lf] to mark the end of the serial packet ascii characte rs for carriage return (hex 0d) are sent followed by lf (hex 0a). custom versions custom versions of the RF803E / rf803d chipset are available to provide a bespoke remote chipset for oem applications. please contact our sa les department for further information. *note: serial data output is common across the enti re rf80n range, therefore up to 16 inputs states are sent. when using encoders with lo wer numbers of inputs the un-used bits are set to 0.
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 9 9 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 typical applications: rf803d RF803E i/p 2 gnd antenna nand gate 0.1uf, 25v vcc rtfq1 1 enable ` 2 in 3 gnd vcc 4 gnd 5 ant 6 i/ p 3 i/p 1 1 8 2 RF803E 34 5 7 6 gnd i/p 1 i/p 2 vcc tx i/ p 3 n/c n/c gnd gnd 0.1uf, 25v
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 1 1 0 0 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 technical specifications: absolute maximum ratings 803e and 803d note : stresses above those listed under ?absolute maxim um ratings? may cause permanent damage to the devic e. item rating units supply voltage 2.0 ? 5.5 v max output current 80 ma storage temperature -65 to +150 c (note) lead soldering temp c (note) esd rating v max o/p current sunk by any i/o pin 25 ma max o/p current sourced by any i/o pin 25 ma RF803E electrical characteristics min typical max unit operating current(average) vdd = 5v 603 645 689 a standby current .1 a high level input voltage 2.0 vdd v low level input voltage vss 0.8 v high level output voltage vdd - .7 v low level output voltage 0.6 v output pin current rating 25 ma led sink current 75 ma rf803d electrical characteristics min typical max unit operating current(average) vdd = 2v 1 ma standby current - a high level input voltage 2.0 v low level input voltage vss 0.8 v high level output voltage vdd - .7 v low level output voltage 0.6 v output pin current rating 25 ma led sink current 75 ma
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 1 1 1 1 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 appendix ? package types 6 pin sot-23 package
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 1 1 2 2 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 8 pin soic package
d d s s 8 8 0 0 3 3 - - 7 7 a a p p r r i i l l 0 0 4 4 ? ? 2 2 0 0 0 0 8 8 r r f f s s o o l l u u t t i i o o n n s s l l t t d d , , w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k p p a a g g e e 1 1 3 3 t t e e l l 0 0 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x 0 0 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 e e n n c c o o d d e e r r / / d d e e c c o o d d e e r r i i c c ? ? s s r r f f 8 8 0 0 3 3 8 pin pdip package

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