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 demodulator，with 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: [email protected] 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 Type Function nINT/VDI DI/ DO Interrupt input (active low)/Valid data indicator VDD S Positive power supply SDI DI SPI data input SCK DI SPI clock input nSEL DI Chip select (active low) SDO DO Serial data output with bus hold nIRQ DO Interrupts request output（active low） FSK/DATA/nFFS DI/DO/DI 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 DO Clock output for external microcontroller nRES DIO Reset output（active low） GND S Power ground Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com RFM12 Electrical Parameter： Maximum（not at working mode） symbol parameter minimum maximum Unit Vdd Positive power supply -0.5 6.0 V Vin All pin input level -0.5 Vdd+0.5 V Iin Input current except power -25 25 mA ESD Human body model 1000 V Tst Storage temperature 125 ℃ Tld Soldering temperature(10s) 260 ℃ -55 Recommended working range symbol parameter minimum maximum Unit Vdd Positive power supply 2.2 5.4 V Top Working temperature -40 85 ℃ DC characteristic symbol parameter Remark Idd_TX_0 Supply current 315,433MHz band 13 (TX mode, Pout = 0dBm) 868MHz band 16 915MHz band 17 Idd_TX_PMAX Idd_RX Ix minimum typical Supply current 315,433MHz band 21 (TX mode, Pout = Pmax) 868MHz band 24 915MHz band 25 Supply current 315,433MHz band 10 (RX mode) 868MHz band 12 915MHz band 13 Crystal and base band 3．0 Stand by current maximum Unit mA mA mA 3．5 mA on Ipd Sleep mode current Ilb Low battery detection Vlb Low battery step Vlba Low battery detection All blocks off 0.1V per step 0.3 uA 0.5 uA 2.2 5.3 75 V mV accuracy Vil Low level input Vih High level input Iil Leakage current Vil=0V -1 1 uA Iih Leakage current Vih=Vdd, Vdd=5.4V -1 1 uA Vol Low level output Iol=2mA 0.4 V Voh High level output Ioh=-2mA Tel: +86-755-82973806 0.3*Vdd 0.7*Vdd V V Vdd-0.4 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com V RFM12 AC characteristic symbol parameter fref PLL frequency fLO fLO fLO BW tlock remark min typical max Unit 8 10 12 MHz frequency 315 MHz band,2.5KHz step 310.24 319.75 (10MHz crystal 433 MHz band,2.5KHz step 430.24 439.75 used) 868 MHz band,5KHz step 860.48 879.51 915 MHz band,7.5KHz step 900.72 929.27 frequency 315 MHz band,2.5KHz step 248.19 255.80 (8MHZ crystal 433 MHz band,2.5KHz step 344.19 351.80 used) 868 MHz band,5KHz step 688.38 703.61 915 MHz band,7.5KHz step 720.57 743.41 frequency 315 MHz band,2.5KHz step 372.28 383.71 (12MHZ crystal 433 MHz band,2.5KHz step 516.28 527.71 used) 868 MHz band,5KHz step 1032.5 1055.4 915 MHz band,7.5KHz step 1080.8 1115.1 Receiver 1 60 67 75 bandwidth 2 120 134 150 3 180 200 225 4 240 270 300 5 300 350 375 6 360 400 450 PLL lock time After 10MHz step hopping, 20 MHz MHz MHz KHz us frequency error <10 kHz BR Data rate With internal digital 0.6 115.2 kbps 256 kbps -96 dBm demodulator BRA Data rate With external RC filter Pmin sensitivity BW=134KHz,BR=1.2kbps -102 AFCrange AFC working range dfFSK FSK deviation in the 0.8* received signal dfFSK RSA RSSI accuracy ±5 dB RSR RSSI range 46 dB CARSSI ARSSI filter 1 nF RSSTEP RSSI 6 dB 500 us programmable step RSRESP DRSSI response RSSI output high after time valid , CARRSI=5nF AC characteristic(Transmitter) symbol parameter remark Pmax Available output power with 315/433MHZ band 8 optimal antenna impedance 868/915MHZ band 0 Typical output power Selectable in 3 dB Pout min Pmax-21 typical max dbm Pmax steps Tel: +86-755-82973806 Unit Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com dbm RFM12 Co Output capacitance In low bands 2 2.6 3.2 pf (set by the automatic antenna In high bands 2.1 2.7 3.3 Quality factor of the output In low bands 13 15 17 capacitance In high bands 8 10 12 Output phase noise 100 kHz from carrier -75 1 MHz from carrier -85 tuning circuit) Qo Lout BR FSK bit rate dffsk FSK frequency deviation Programmable in 15 15 dbc/HZ 256 kbps 240 kHZ kHz steps AC characteristic(Turn-on/Turnaround timings) symbol parameter remark Tst Crystal oscillator startup Crystal ESR < 100 min typical max Unit 5 ms time Ttx_rx_XTAL_ON Trx_tx_XTAL_ON Ttx_rx_SYNT_ON Trx_tx_SYNT_ON Cxl tPOR Transmitter - Receiver Synthesizer off, crystal turnover time oscillator on Receiver - Transmitter Synthesizer off, crystal turnover time oscillator on Transmitter - Receiver Synthesizer on, crystal turnover time oscillator on Receiver - Transmitter Synthesizer on, crystal turnover time oscillator on Crystal load Programmable in 0.5 pF steps, capacitance tolerance+/- 10% Internal POR timeout After Vdd has reached 90% of 450 us 350 us 425 us 300 us 8.5 16 pf 100 ms 1.05 ms 2 pf 10 ns final value tPBt Wake-up timer clock Calibrated every 30 seconds 0.96 period Cin, D Digital input apacitance tr, f Digital output rise/fall 15pF pure capacitive load time Field testing range Band Test condition Distance 315MHz band Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency >100M deviation =45KHZ（matches with RFM12）in free open area 433MHz band Receiver bandwidth =67KHz, data rate=1.2kbps, transmitter frequency >150M deviation =45KHZ（matches with RFM12）In free open area 868MHz band Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency >100M deviation =45KHZ（matches with RFM12）in free open area 915MHz band Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency deviation =45KHZ（matches with RFM12）in free open area Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com >100M RFM12 SGS Reports Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com RFM12 Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com RFM12 Mechanical Dimension （units in mm） SMD PACKAGE（S1） SMD PACKAGE（S2） Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com RFM12 DIP PACKAGE（D） Module Model Definition model=module-operation band RFM12 – 433-D/S module type operation band Package example：1，RFM12 module at 433MHz band, DIP : RFM12-433-D。 2，RFM12 module at 868MHZ band, SMD, thickness at 4.2mm: RFM12-868-S1。 Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] 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 The products described in this document are not intended for use in Rm B.8/F LiJingGe Emperor Regency 6012 implantation or other direct life support applications where malfunction ShenNan Rd., Shenzhen,China may result in the direct physical harm or injury to persons. NO Tel: WARRANTIES OF ANY KIND, INCLUDING, BUT NOT LIMITED TO, 86-755-82973805 Fax: Email: 86-755-82973550 [email protected] [email protected] THE IMPLIED WARRANTIES OF MECHANTABILITY OR FITNESS FOR A ARTICULAR PURPOSE, ARE OFFERED IN THIS DOCUMENT. Website: http://www.hoperf.com http://hoperf.en.alibaba.com Tel: +86-755-82973806 ©2006, HOPE MICROELECTRONICS CO.,LTD. All rights reserved. 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