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| RFM12 UNIVERSAL ISM BAND FSK TRANSCEIVER MODULE RFM12 the purpose of this spec covers mainly for the physical characteristic of the module, for register configure and its related command info please refer to RF12 data sheets RFM12 General Introduction RFM12 is a low costing ISM band transceiver module implemented with unique PLL. It works signal ranges from 315/433/868/915MHZ bands, comply with FCC, ETSI regulation. The SPI interface is used to communicate with microcontroller for parameter setting. Features: * Low costing, high performance and price ratio * Tuning free during production * PLL and zero IF technology * Fast PLL lock time * High resolution PLL with 2.5 KHz step * High data rate (up to 115.2 kbps with internal demodulatorwith external RC filter highest data rate is 256 kbps) * Differential antenna input * Automatic antenna tuning * Programmable TX frequency deviation (from 15 to 240 KHz) * Programmable receiver bandwidth (from 67 to 400 kHz) * Analog and digital signal strength indicator (ARSSI/DRSSI) * AFC * DQD * Internal data filtering and clock recovery * RX synchron pattern recognition * SPI interface * Clock and reset signal output for external MCU use * 16 bit RX Data FIFO * Two 8 bit TX data registers * 10MHz crystal for PLL timing * Wakeup timer * 2.2V - 5.4V power supply * Low power consumption * Standby current less than 0.3uA Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12 Typical Application * Remote control * Remote sensor * Wireless data collection * Home security system * Toys * Tire pressure monitoring system Pin Definition SMD DIP definition nINT/VDI VDD SDI SCK nSEL SDO nIRQ FSK/DATA/nFFS Type DI/ DO S DI DI DI DO DO DI/DO/DI Function Interrupt input (active low)/Valid data indicator Positive power supply SPI data input SPI clock input Chip select (active low) Serial data output with bus hold Interrupts request outputactive low Transmit FSK data input/ Received data output (FIFO not used)/ FIFO select DCLK/CFIL/FFIT DO/AIO/DO Clock output (no FIFO )/ external filter capacitor(analog mode)/ FIFO interrupts(active high)when FIFO level set to 1, FIFO empty interruption can be achieved CLK nRES GND DO DIO S Clock output for external microcontroller Reset outputactive low Power ground Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12 Electrical Parameter Maximumnot at working mode symbol Vdd Vin Iin ESD Tst Tld parameter Positive power supply All pin input level Input current except power Human body model Storage temperature Soldering temperature(10s) -55 minimum -0.5 -0.5 -25 maximum 6.0 Vdd+0.5 25 1000 125 260 Unit V V mA V Recommended working range symbol Vdd Top parameter Positive power supply Working temperature minimum 2.2 -40 maximum 5.4 85 Unit V DC characteristic symbol Idd_TX_0 parameter Supply current (TX mode, Pout = 0dBm) Remark 315,433MHz band 868MHz band 915MHz band Idd_TX_PMAX Supply current (TX mode, Pout = Pmax) 315,433MHz band 868MHz band 915MHz band Idd_RX Supply current (RX mode) 315,433MHz band 868MHz band 915MHz band Ix Stand by current Crystal and base band on Ipd Ilb Vlb Vlba Sleep mode current Low battery detection Low battery step Low battery detection accuracy Vil Vih Iil Iih Vol Voh Low level input High level input Leakage current Leakage current Low level output High level output Vil=0V Vih=Vdd, Vdd=5.4V Iol=2mA Ioh=-2mA Vdd-0.4 0.7*Vdd -1 -1 1 1 0.4 0.3*Vdd V V uA uA V V 0.1V per step 2.2 75 All blocks off 0.3 0.5 5.3 uA uA V mV minimum typical 13 16 17 21 24 25 10 12 13 30 35 mA mA mA maximum Unit mA Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12 AC characteristic symbol fref parameter PLL frequency frequency fLO (10MHz crystal used) 315 MHz band,2.5KHz step 433 MHz band,2.5KHz step 868 MHz band,5KHz step 915 MHz band,7.5KHz step frequency fLO (8MHZ crystal used) 315 MHz band,2.5KHz step 433 MHz band,2.5KHz step 868 MHz band,5KHz step 915 MHz band,7.5KHz step frequency fLO (12MHZ crystal used) 315 MHz band,2.5KHz step 433 MHz band,2.5KHz step 868 MHz band,5KHz step 915 MHz band,7.5KHz step BW Receiver bandwidth 1 2 3 4 5 6 tlock PLL lock time After 10MHz step hopping, frequency error <10 kHz BR Data rate With internal digital demodulator BRA Pmin AFCrange Data rate sensitivity AFC working range With external RC filter BW=134KHz,BR=1.2kbps dfFSK FSK deviation in the received signal RSA RSR CARSSI RSSTEP RSSI accuracy RSSI range ARSSI filter RSSI programmable step RSRESP DRSSI response time RSSI output high after valid , CARRSI=5nF 500 us -102 0.8* dfFSK 5 46 1 6 dB dB nF dB 256 -96 kbps dBm 0.6 115.2 kbps remark min 8 310.24 430.24 860.48 900.72 248.19 344.19 688.38 720.57 372.28 516.28 1032.5 1080.8 60 120 180 240 300 360 67 134 200 270 350 400 20 typical 10 max 12 319.75 439.75 879.51 929.27 255.80 351.80 703.61 743.41 383.71 527.71 1055.4 1115.1 75 150 225 300 375 450 us KHz MHz MHz MHz Unit MHz AC characteristic(Transmitter) symbol Pmax parameter Available output power with optimal antenna impedance Pout Typical output power remark 315/433MHZ band 868/915MHZ band Selectable in 3 dB steps Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com Pmax-21 min typical 8 0 Pmax dbm max Unit dbm RFM12 Co Output capacitance (set by the automatic antenna tuning circuit) Qo Quality factor of the output capacitance Lout Output phase noise In low bands In high bands 100 kHz from carrier 1 MHz from carrier BR dffsk FSK bit rate FSK frequency deviation Programmable in 15 kHz steps 15 13 8 15 10 17 12 -75 -85 256 240 kbps kHZ dbc/HZ In low bands In high bands 2 2.1 2.6 2.7 3.2 3.3 pf AC characteristic(Turn-on/Turnaround timings) symbol Tst parameter Crystal oscillator startup time Ttx_rx_XTAL_ON Transmitter - Receiver turnover time Trx_tx_XTAL_ON Receiver - Transmitter turnover time Ttx_rx_SYNT_ON Transmitter - Receiver turnover time Trx_tx_SYNT_ON Receiver - Transmitter turnover time Cxl Crystal load capacitance tPOR Internal POR timeout Synthesizer off, crystal oscillator on Synthesizer off, crystal oscillator on Synthesizer on, crystal oscillator on Synthesizer on, crystal oscillator on Programmable in 0.5 pF steps, tolerance+/- 10% After Vdd has reached 90% of final value tPBt Wake-up timer clock period Cin, D tr, f Digital input apacitance Digital output rise/fall time 15pF pure capacitive load 2 10 pf ns Calibrated every 30 seconds 0.96 1.05 ms 100 ms 8.5 16 pf 300 us 425 us 350 us 450 us remark Crystal ESR < 100 min typical max 5 Unit ms Field testing range Band 315MHz band Test condition Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency deviation =45KHZmatches with RFM12in free open area 433MHz band Receiver bandwidth =67KHz, data rate=1.2kbps, transmitter frequency deviation =45KHZmatches with RFM12In free open area 868MHz band Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency deviation =45KHZmatches with RFM12in free open area 915MHz band Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency deviation =45KHZmatches with RFM12in free open area Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com >100M >100M >150M Distance >100M RFM12 SGS Reports Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12 Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12 Mechanical Dimension units in mm SMD PACKAGES1 SMD PACKAGES2 Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12 DIP PACKAGED Module Model Definition model=module-operation band RFM12 - 433-D/S module type operation band Package example1RFM12 module at 433MHz band, DIP : RFM12-433-D 2RFM12 module at 868MHZ band, SMD, thickness at 4.2mm: RFM12-868-S1 Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12 This document may contain preliminary information and is subject to change by Hope Microelectronics without notice. Hope Microelectronics assumes no responsibility or liability for any use of the information contained herein. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Hope Microelectronics or third parties. HOPE MICROELECTRONICS CO.,LTD Rm B.8/F LiJingGe Emperor Regency 6012 ShenNan Rd., Shenzhen,China Tel: Fax: Email: 86-755-82973805 86-755-82973550 sales@hoperf.com The products described in this document are not intended for use in implantation or other direct life support applications where malfunction may result in the direct physical harm or injury to persons. NO WARRANTIES OF ANY KIND, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MECHANTABILITY OR FITNESS FOR A ARTICULAR PURPOSE, ARE OFFERED IN THIS DOCUMENT. (c)2006, HOPE MICROELECTRONICS CO.,LTD. All rights reserved. trade@hoperf.com Website: http://www.hoperf.com http://hoperf.en.alibaba.com Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com |
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