CONTROL44 RADIOMETRIX | Alldatasheet

Document overview

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  • PDF pages: 7

Technical content

Features

  • Operating voltage (temperature): 3.0V-5.5V for standard version (-40 °C to +125°C) 2.0V-5.5V for low voltage version (-40 °C to +85°C)
  • Draws <2mA without external load
  • 4 bit address and 4 bit data
  • 16 different remotes with 4 controls each
  • Single packetised transmission for fast activation
  • Maximum usage of the range capability of an RF module
  • Adequate preamble to settle data slicer in the receiver.
  • Extra wake up preamble to allow for transmitter power up time requirements
  • Differential Manchester encoding of address, data and checksum
  • Synchronisation codes and checksum to reduce false triggering on noise
  • Suitable to be used with Narrow Band FM radio modules
  • Ceramic resonator or crystal oscillator up to 20MHz
  • Data rate up to 5.6kbps
  • Minimum external component requirement
  • 4 wire, push button and latched push button modes
  • Custom address, data bit variations available subject to minimum order quantity

Applications

  • Security and Alarm systems
  • Emergency assistance call system
  • Status reporting and monitoring systems
  • RF Remote control systems
  • Industrial controls
  • HVAC controls
  • Simple On/Off switching
  • Long range telecontrol with Narrow Band FM radios Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Issue: 4, 01 November 2004 Control4 4 Control44 is a 4 bit address, 4 bit data encoder and decoder combined in a single IC. This device can operate in either Encode or Decode mode. It uses 1kbps differentia l Manchester bit balancing with preamble and checksum.CTR44 is specifically designed to be used in RF remote control applications. It is available in 20pin SSOP, 18pin SOIC and PDIP packages. Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233 Figure 1: Control44 in DIL package 4 bit Address - 4 bit Data encoder/decoder

Radiometrix Ltd Control44 page 2 Encoder Mode Control44 can be put into Encoder Mode by connecting Mode (pin 2) to supply. NC Mode(Vdd) TXE RST VSS TXD SEND OSC1 OSC2 Vdd (+5V) DB3 DB2 DB1 DB0 91 0 Control44 Pin Name Input/Output Description 1 NC

2 Mode Input RX=0V, TX=Vdd (no pull-up, only read at reset/power up)

3 TXE Output Active Low RF Transmitter Enable (Open drain, require 10k pull-up) 4,6

4 RST Input Active Low Reset (Connect to user system reset or tie to Vdd)

5 VSS Supply Supply Ground

6-9 A3:A0 Input Least significant 4 bits of Address (Internal pull-ups to Vdd) 1,5 10-13 DB3:DB0 Input Least significant 4 bits of Data B (Internal pull-ups to Vdd) 5 14 Vdd Supply 4.5-5.5V supply (decouple with 0.1µF close to IC) 15 OSC2 Output 3.58MHz resonator 2 16 OSC1 Input 3.58MHz resonator 2

17 SEND Input Active Low Send Packet (Encoder Enable) 3

18 TXD Output Encoded Address and Data to TXD input of RF Transmitter

Control44 can be put into Decoder Mode by connecting Mode (pin 2) to Ground. Figure 3: Control44 in Decoder Mode STB Mode NC RST VSS RXD Latch OSC1 OSC2 Vdd DB3 DB2 DB1 DB0 Control44 RF Vcc GND RXD 10k 100nF supplyReceiver 470R 470R 470R 470R 470R 3.58MHz NC Mode TXE RST VSS TXD SEND OSC1 OSC2 Vdd DB3 DB2 DB1 DB0 Control44 RF Vcc GND TXD 4k7 10k 100nF supplyTransmitter 10k 3.58MHz Figure 2: Control44 in Encoder Mode STB Mode NC RST VSS RXD Latch OSC1 OSC2 Vdd DB3 DB2 DB1 DB0 Control44

Radiometrix Ltd Control44 page 3 Pin Name Input/Output Description 1 STB Output Positive going pulse on reception of valid data packet. 10µs duration 6-9 A3:A0 Input Least significant 4 bits of Address (Internal pull-ups to Vdd) 1,5 10-13 DA3:DA0 Output Least significant 4 bits of Data A 5 14 Vdd Supply 4.5-5.5V supply (decouple with 0.1µF close to IC) 15 OSC2 Output 3.58MHz resonator 2 16 OSC1 Input 3.58MHz resonator 2

17 Latch Input 0V = latch DA3:D0 until next packet

Vdd = clear DA3:DA0 after 150ms (no pull-up)

18 RXD Input Encoded Address and Data from RXD Output of RF Receiver

Notes: 1. Only 4 of the 6 address bits are accessible. A5,A4 are set to 0 in CTR44 2. OSC1,2 require a 3.58MHz ceramic resonator with internal capacitors like Murata CSTLA3M58G55-B0. If a 2 pin resonator or crystal is used, then two 15pF-22pF caps are needed: one from OSC1 to 0V another from OSC2 to 0V. 100Ω series resistor between OSC2 and crystal may be required when driving low frequency crystal with High Speed (H) CTR44H version. 3. If a low going pulse of between 10 µs and 50ms is applied to SEND pin then a single packet will be transmitted 4. After asserting TXE low (active), the encoder allows 55ms for NBFM TX to power up and settle 5. Absolute maximum source/sink current from each DB3:DB0 pin is 25mA 6. TXE is an open drain output (no pull-up). Connect it to Vdd via a 10k Ω pull-up resistor 7. MODE pin is only read at reset/power up. Connect to either Vdd (Encoder) or 0V (Decoder). 8. Without external loads the CTR44 draws <2mA from 5V supply. 9. Standard version can be used down to 3V for <10MHz oscillator. Low voltage version can be used down to 2V for <4MHz oscillator. 10. High Speed, CTR44H, version should not be used with Narrow Band FM radio modules. Encoded Data Packet Format Transmission format is 1kbps differential Manchester encoding when using 3.58MHz resonator. Oscillator frequency can decreased to suit narrow band RF module data rate requirements. CTR44H IC running at 20MHz can be used with wideband radio modules for fast data transmission. 0 0 0 0 11 1ms 500 µs Figure 4: 1kbps differential Manchester coding of ‘1’ and ‘0’

Radiometrix Ltd Control44 page 5 Figure 7: Synchronisation codes, DataA, DataB, Address, Checksum and Postamble Application Modes Mode Setup Description 4 wires Latch = 0V (connect) SEND = 0V (connect) Continuous transmission like wire connection Pushbutton Latch = Vdd (connect) SEND =0V (push button) Decoder outputs active only when transmitter is keyed Latched Pushbutton Latch = 0V (connect) SEND = 0V (push button) Decoder outputs hold state of last transmission

Ordering Information

CTR44-000-SS Control 44 ( ≤4MHz)- No Frequency - Shrink Small Outline CTR44-000-SO Control 44 ( ≤4MHz)- No Frequency - Small Outline CTR44-000-DIL Control 44 ( ≤4MHz)- No Frequency - Plastic Dual In Package CTR44L-000-SS Control 44 Low Voltage ( ≤4MHz) - No Frequency - Shrink Small Outline CTR44L-000-SO Control 44 Low Voltage ( ≤4MHz) - No Frequency - Small Outline CTR44L-000-DIL Control 44 Low Voltage ( ≤4MHz) - No Frequency - Plastic Dual In Package CTR44H-000-SS Control 44 High Speed (4MHz-20MHz) - No Frequency - Shrink Small Outline CTR44H-000-SO Control 44 High Speed (4MHz-20MHz) - No Frequency - Small Outline CTR44H-000-DIL Control 44 High Speed (4MHz-20MHz) - No Frequency - Plastic Dual In Package

Radiometrix Ltd Control44 page 6 Appendix Figure 8: Relay circuit using Control44 It uses Schrack RY610012 or OKO K4M12 relay which is rated 8A @ 250V AC or 30V DC and runs off at 12VDC. Control44 Evaluation Kit is also available to evaluate CTR44 with single frequency Radiometrix radio modules.

231 Kenton Lane

Harrow, Middlesex HA3 8RP ENGLAND Tel: +44 (0) 20 8909 9595 Fax: +44 (0) 20 8909 2233 sales@radiometrix.com www.radiometrix.com Copyright notice This product data sheet is the original work and copyrighted property of Radiometrix Ltd. Reproduction in whole or in part must give clear acknowledgement to the copyright owner. Limitation of liability The information furnished by Radiometrix Ltd is believed to be accurate and reliable. Radiometrix Ltd reserves the right to make changes or improvements in the design, specification or manufacture of its subassembly products without notice. Radiometrix Ltd does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. This data sheet neither states nor implies warranty of any kind, including fitness for any particular application. These radio devices may be subject to radio interference and may not function as intended if interference is present. We do NOT recommend their use for life critical applications. The Intrastat commodity code for all our modules is: 8542 6000 R&TTE Directive After 7 April 2001 the manufacturer can only place finished product on the market under the provisions of the R&TTE Directive. Equipment within the scope of the R&TTE Directive may demonstrate compliance to the essential requirements specified in Article 3 of the Directive, as appropriate to the particular equipment. Further details are available on The Office of Communications (Ofcom) web site: http://www.ofcom.org.uk/radiocomms/ifi/licensing/licensing_policy_manual/ Information Requests Ofcom Riverside House 2a Southwark Bridge Road London SE1 9HA Tel: +44 (0)845 456 3000 or 020 7981 3040 Fax: +44 (0)20 7783 4033 information.requests@ofcom.org.uk European Radiocommunications Office (ERO) Peblingehus Nansensgade 19 DK 1366 Copenhagen Tel. +45 33896300 Fax +45 33896330 ero@ero.dk www.ero.dk