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| RFM12B Datasheet REV1.2 UNIVERSAL ISM BAND FSK TRANSCEIVER MODULE RFM12B 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 data sheets RFM12B General Introduction RFM12B is a low costing ISM band transceiver module implemented with unique PLL. It works signal ranges from 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/output * 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) * Automatic frequency control (AFC) * Data quality detection (DQD) * Internal data filtering and clock recovery * RX synchron pattern recognition * SPI compatible serial control interface * Clock and reset signal output for external MCU use * 16 bit RX Data FIFO * Two 8 bit TX data registers * Standard 10 MHz crystal reference * Wakeup timer * 2.2V - 3.8V power supply * Low power consumption * Standby current less than 0.3uA * Supports very short packets (down to 3 bytes) Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12B Datasheet REV1.2 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 Electrical Parameter Maximumnot at working mode symbol Vdd Vin parameter Positive power supply All pin input level minimum -0.5 -0.5 maximum 6.0 Vdd+0.5 Unit V V Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12B Datasheet REV1.2 Iin ESD Tst Tld Input current except power Human body model Storage temperature Soldering temperature(10s) -55 -25 25 1000 125 260 mA V Recommended working range symbol Vdd Top parameter Positive power supply Working temperature minimum 2.2 -40 maximum 3.8 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 Ipd Ilb Vlb Idle current Sleep mode current Low battery detection Low battery detect threshold Vlba 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 5 % 0.1V per step 2.2 Crystal oscillator on All blocks off minimum typical 15 16 17 22 23 24 11 12 13 0.62 0.3 0.5 3.7 maximum 17 18 19 24 25 26 13 14 15 1.2 mA uA uA V mA mA Unit mA AC characteristic symbol fref parameter PLL frequency frequency fLO (10MHz crystal used) 433 MHz band,2.5KHz step 868 MHz band,5KHz step 915 MHz band,7.5KHz step remark min 9 430.24 860.48 900.72 typical 10 max 11 439.7 5 879.5 1 929.2 7 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com MHz Unit MHz RFM12B Datasheet REV1.2 frequency fLO (9MHZ crystal used) 433 MHz band,2.5KHz step 868 MHz band,5KHz step 915 MHz band,7.5KHz step 387.22 774.43 810.65 395.7 6 791.5 6 836.3 4 frequency fLO (11MHZ crystal used) 433 MHz band,2.5KHz step 868 MHz band,5KHz step 915 MHz band,7.5KHz step 473.26 946.53 990.79 483.7 3 967.4 6 1022. 2 BW Receiver bandwidth mode 0 mode 1 mode 2 mode 3 mode 4 mode 5 MHz MHz 60 120 180 240 300 360 67 134 200 270 350 400 30 75 150 225 300 375 450 us KHz tlock PLL lock time After 10MHz step hopping, frequency error <10 kHz tst, P BR BRA PLL startup time Data rate Data rate With a running crystal oscillator With internal digital demodulator With external RC filter BER 10 , BW=134KHz,BR=1.2kbps, 433MHz band -3 200 0.6 300 115.2 256 us kbps kbps -109 -105 -105 0.8* dfFSK 5 46 1 6 -100 -100 -100 dBm Pmin sensitivity BER 10-3, BW=134KHz,BR=1.2kbps, 868MHz band BER 10-3, BW=134KHz,BR=1.2kbps, 915MHz band AFCrange AFC working range dfFSK : FSK deviation in the received signal RSA RSR CARSSI RSSTEP RSSI accuracy RSSI range ARSSI filter RSSI programmable step dB dB nF dB RSRESP DRSSI response time RSSI output high after valid , CARRSI=5nF 500 us Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12B Datasheet REV1.2 AC characteristic(Transmitter) symbol parameter remark 433MHz band Pmax Max. available output power 868MHz band 915MHz band Pout Typical output power Selectable in 3 dB steps 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 BRTX FSK bit rate Via internal TX data register BRATX FSK bit rate TX data connected to the FSK input min 3 2 2 Pmax-21 typical 5 4 4 max Unit dBm Pmax dbm In low bands In high bands 2 2.1 2.6 2.7 3.2 3.3 pf 13 8 15 10 17 12 -80 -103 172 kbps dbc/HZ 256 kbps dffsk FSK frequency deviation Programmable in 15 kHz steps 15 240 kHZ AC characteristic(Turn-on/Turnaround timings) symbol Tst parameter Crystal oscillator startup time Transmitter Ttx_XTAL_ON time Receiver turn-on time Trx_XTAL_ON Transmitter Ttx_rx_SYNT_ON - turn-on Synthesizer off, crystal 250 us remark Crystal ESR < 100 min typical 1 max 5 Unit ms oscillator on with 10 MHz step Synthesizer off, crystal oscillator on with 10 MHz step Synthesizer and crystal 250 us Receiver turnover time oscillator on during TX/RX change with 10 MHz step 150 us Receiver Trx_tx_SYNT_ON Cxl Transmitter time Crystal load capacitance tPOR Internal POR timeout - turnover Synthesizer and crystal 150 us oscillator on during RX/TX change with 10 MHz step Programmable in 0.5 pF steps, tolerance+/- 10% After Vdd has reached 90% of final value 8.5 16 pf 100 ms tPBt Wake-up timer clock period Calibrated every 30 seconds 0.96 1.05 ms Cin, D tr, f Digital input apacitance Digital output rise/fall time 2 15pF pure capacitive load 10 pf ns Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12B Datasheet REV1.2 Field testing range Band 433MHz band Test condition 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 >200M >200M Distance >200M SGS Reports Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12B Datasheet REV1.2 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12B Datasheet REV1.2 Mechanical Dimension units in mm SMD PACKAGES1 SMD PACKAGES2 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12B Datasheet REV1.2 DIP PACKAGED Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com RFM12B Datasheet REV1.2 Module Model Definition model=module-operation_band-package_type RFM12B - 433-D module type operation band Package example1RFM12B module at 433MHz band, DIP : RFM12B-433-D 2RFM12B module at 868MHZ band, SMD, thickness at 4.2mm: RFM12B-868-S1 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 HOPE MICROELECTRONICS CO.,LTD Add:4/F, Block B3, East Industrial Area, Huaqiaocheng, China Tel: Fax: Email: 86-755-82973805 86-755-82973550 sales@hoperf.com Shenzhen, Guangdong, operate as an express or implied license or indemnity under the intellectual property rights of Hope Microelectronics or third parties. 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://www.hoperf.cn http://hoperf.en.alibaba.com Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com |
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