RFM12BP Datasheet REV2.3 UNIVERSAL ISM BAND FSK TRANSCEIVER MODULE WITH 500mW OUTPUT POWER RFM12BP （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 RF12B datasheet） General Introduction RFM12BP is a low costing ISM band transceiver module implemented with 500mW output power. It works signal ranges from 433/868/915MHZ bands, The SPI interface is used to communicate with microcontroller for parameter setting. Features: • High output power with 500mW • Automatic frequency control (AFC) • High input sensitivity with -117dBm • Data quality detection (DQD) • Low costing, high performance and price ratio • Internal data filtering and clock recovery • PLL and zero IF technology • RX synchron pattern recognition • Fast PLL lock time • SPI compatible serial control interface • High resolution PLL with 2.5 KHz step • Clock and reset signal output for external MCU • High data rate (up to 115.2 kbps with internal use demodulator，with external RC filter highest data • 16 bit RX Data FIFO rate is 256 kbps) • Two 8 bit TX data registers • 50 OHM antenna input/output • Wakeup timer • Programmable TX power • 2.2V – 3.8V power supply for FSK IC, 12V power • Programmable TX frequency deviation (from 15 supply for power amplifier to 240 KHz) • Standby current less than 0.3uA • Programmable receiver bandwidth (from 67 to • Supports very short packets (down to 3 bytes) 400 kHz) • Analog and digital signal strength indicator (ARSSI/DRSSI) Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 1 of 8 RFM12BP Datasheet REV2.3 Typical Application： • Remote control • Wireless data collection • Remote sensor • Home security system • Toys Pin Definition： PIN number definition Type Function 1 GND S ground 2 GND S ground 3 VCC-PA S Positive power supply for power amplifier (12V) 4 GND S ground 5 SDI DI SPI data input 6 SCK DI SPI clock input 7 nSEL DI Chip select (active low) 8 SDO DO Serial data output with bus hold 9 nIRQ DO Interrupts request output（active low） 10 FSK/DATA/n DI/DO/DI Transmit FSK data input/ Received data output (FIFO FFS 11 DCLK/CFIL/F not used)/ FIFO select DO/AIO/DO FIT 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 12 CLK DO Clock output for external microcontroller 13 nRES DIO Reset output（active low） 14 GND S ground 15 nINT/VDI DI/ DO Interrupt input (active low)/Valid data indicator 16 GND S ground 17 VDD S Positive power supply for FSK IC(2.2V-3.8V) GND S 18 Tel: +86-755-82973806 ground Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 2 of 8 RFM12BP Datasheet REV2.3 19 TXEN TX enable (active high ), Drive current ≥ 3mA. TX AI disable(active low). 20 GND S ground 21 RXEN AI RX enable (active high), Drive current ≥ 3mA. RX disable(active low). 22 GND S ground 23 GND S ground 24 ANT AIO RF signal output/input (50 OHM) Typical Application Typical application with FIFO usage Electrical Parameter： Maximum（not at working mode） symbol parameter minimum maximum Unit VDD Positive power supply for FSk IC -0.5 4.0 V VCC-PA Positive power supply for power amplifier -0.5 13 V Vin All pin input level except VDD,VCC-PA,GND,ANT -0.5 VDD+0.5 V Iin Input current except VDD,VCC-PA,GND,ANT -25 25 mA ESD Human body model 1000 V Tst Storage temperature 125 ℃ Tld Soldering temperature(10s) 260 ℃ Tel: +86-755-82973806 -55 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 3 of 8 RFM12BP Datasheet REV2.3 Recommended working range symbol parameter min max Unit VDD Positive power supply 2.2 3.8 V VCC-PA Positive power supply for power amplifier 11 13 V Top Working temperature -40 85 ℃ DC characteristic symbol parameter Remark Idd_TX_PMA Supply current 433MHz band 200 X (TX mode, Pout = 500mW) 868/915MHz band 230 Idd_RX Supply current 433MHz band 20 (RX mode) 868/915MHz band 23 Ix Idle current Crystal oscillator on 0.62 Ipd Sleep mode current All blocks off 0.3 uA Ilb Low battery detection 0.5 uA Vlb Low battery detect 0.1V per step min typ max Unit mA mA 1.2 mA 2.2 3.8 V 0 5 % 0.3*Vdd V threshold Vlba Low battery detection accuracy Vil Low level input Vih High level input Iil Leakage current Vil=0V -1 1 uA Iih Leakage current Vih=Vdd, Vdd=4V -1 1 uA Vol Low level output Iol=2mA 0.4 V Voh High level output Ioh=-2mA 0.7*Vdd V Vdd-0.4 V AC characteristic symbol parameter remark min typica max Unit 11 MHz l fref fLO fLO fLO BW PLL frequency 9 10 frequency 433 MHz band,2.5KHz step 430.24 439.75 (10MHz crystal 868 MHz band,5KHz step 860.48 879.51 used) 915 MHz band,7.5KHz step 900.72 929.27 frequency 433 MHz band,2.5KHz step 387.22 395.76 (9MHZ crystal 868 MHz band,5KHz step 774.43 791.56 used) 915 MHz band,7.5KHz step 810.65 836.34 frequency 433 MHz band,2.5KHz step 473.26 483.73 (11MHZ crystal 868 MHz band,5KHz step 946.53 967.46 used) 915 MHz band,7.5KHz step 990.79 1022.2 Receiver mode 0 60 67 75 bandwidth mode 1 120 134 150 mode 2 180 200 225 Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com MHz MHz MHz KHz 4 of 8 RFM12BP Datasheet REV2.3 tlock PLL lock time mode 3 240 270 300 mode 4 300 350 375 mode 5 360 400 450 After 10MHz step hopping, 30 us frequency error <10 kHz tst, P BR With a running crystal PLL startup time 200 oscillator Data rate With internal digital 0.6 300 us 115.2 kbps 256 kbps dBm demodulator BRA Data rate With external RC filter Pmin Sensitivity 433MHz band -118 -116 -3 (BER 10 , 868MHz band -114 -112 BW=134KHz,BR=1 915MHz band -112 -110 dfFSK : FSK deviation in the 0.8* received signal dfFSK .2kbps,) AFCrange AFC working range AC characteristic(Transmitter) symbol parameter remark min typical Pmax_50 Max. output power delivered to 433MHZ band 26 27 50Ohm load 868MHZ band 25 27 915MHZ band 25 27 BRTX FSK bit rate max Unit dBm Via internal TX data 172 kbps 256 kbps 240 kHZ register BRATX FSK bit rate TX data connected to the FSK input dffsk FSK frequency deviation Programmable in 15 15 kHz steps AC characteristic(Turn-on/Turnaround timings) symbol parameter remark min Tst Crystal oscillator Crystal ESR < 100 typical max Unit 1 5 ms startup time Ttx_XTAL_ON Transmitter Synthesizer turn-on time oscillator on with 10 MHz off, crystal 250 us 250 us 150 us step Trx_XTAL_ON Receiver Synthesizer off, crystal turn-on time oscillator on with 10 MHz step Transmitter Ttx_rx_SYNT_ON – Synthesizer and crystal Receiver oscillator on during TX/RX turnover time change with 10 MHz step Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 5 of 8 RFM12BP Datasheet REV2.3 Receiver Trx_tx_SYNT_ON Cxl tPOR tPBt Synthesizer – and crystal Transmitter oscillator on during RX/TX turnover time change with 10 MHz step Crystal load Programmable in 0.5 pF capacitance steps, tolerance+/- 10% Internal POR After Vdd has reached 90% timeout of final value Wake-up timer Calibrated every 30 seconds 150 8.5 0.96 us 16 pf 100 ms 1.05 ms 2 pf 10 ns clock period Cin, D Digital input capacitance tr, f Digital output 15pF pure capacitive load rise/fall time Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 6 of 8 RFM12BP Datasheet REV2.3 Mechanical Dimension Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 7 of 8 RFM12BP Datasheet REV2.3 Module Model Definition model=module-operation band RFM12BP – 433 module type operation band example：1，RFM12BP module at 433MHz band, RFM12BP-433. 2，RFM12BP module at 868MHZ band, RFM12BP-868. 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 HOPE MICROELECTRONICS CO.,LTD intellectual property rights of Hope Microelectronics or third parties. Rm B.8/F LiJingGe Emperor Regency 6012 The products described in this document are not intended for use in ShenNan Rd., Shenzhen,China implantation or other direct life support applications where malfunction Tel: may result in the direct physical harm or injury to persons. 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