RFM42B/43B RFM42B/43B ISM TRANSMITTER V1.0 Features Frequency range Ultra low power shutdown mode 433/868/915MHz ISM bands Wake-up timer Integrated 32 kHz RC or 32 kHz XTAL Output Power Range Integrated voltage regulators +1 to +20dBm (RFM42B) Configurable packet handler 8 to +13dBm (RFM43B) TX 64 byte FIFO Low Power Consumption Low battery detector RFM42B Temperature sensor and 8-bit ADC 85 mA +20 dBm 40 to +85 C temperature range RFM43B Integrated voltage regulators 30 mA +13 dBm Frequency hopping capability Data Rate = 0.123 to 256 kbps On-chip crystal tuning FSK, GFSK, and OOK modulation RFM42B/43B 14-PIN DIP & 16-PIN SMD package Power Supply = 1.8 to 3.6 V Low cost Power-on-reset (POR) Applications Remote control Remote meter reading Home security & alarm Remote keyless entry Telemetry Home automation Personal data logging Industrial control Toy control Sensor networks Wireless PC peripherals Health monitors Description are highly integrated, low cost,433/868/915MHZ HopeRF s RFM42B/43B wireless ISM transmitters module. The RFM42B/43B offers advanced radio features including adjustable power output levels of 8 to +13dBm on the RFM43B and +1 to +20dBm on the RFM42B.Power adjustments are made in 3dB steps.The RFM42B/43B s high level of integration offers reduced BOM cost while simplifying the overall system design. The RFM42Bs Industry leading +20dBm output power ensures link performance. extended range and improved Additional system features such as an automatic wake-up timer, low battery detector, 64 byte TX FIFO, and automatic packet handling reduce overall current consumption and allow the use of lower-cost system MCUs. An integrated temperature sensor, general purpose ADC, power-on-reset (POR), and GPIOs further reduce overall system cost and size. The direct digital transmit modulation and automatic PA power ramping ensure precise transmit modulation and reduced spectral spreading ensuring compliance with global regulations including FCC,ETSI regulations. An easy-to-use calculator is provided to quickly configure the radio settings, simplifying customer s system design and reducing time to market. Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales hoperf.com RFM42B/43B TABLE OF CONTENTS Section Page 1. Electrical Specifications .4 2. Functional Description . 10 2.1. Operating Modes 10 3. Controller Interface 11 3.1. Serial Peripheral Interface (SPI) 11 3.2. Operating Mode Control 13 3.3. Interrupts .16 3.4. System Timing .17 18 3.5. Frequency Control . 4. Modulation Options 23 4.1. Modulation Type 23 4.2. Modulation Data Source 24 5. Internal Functional Blocks 27 5.1. Synthesizer 27 5.2. Power Amplifier .27 5.3. Crystal Oscillator 29 5.4. Regulators .29 6. Data Handling and Packet Handler 30 30 6.1. TX FIFO 6.2. Packet Configuration .31 6.3. Packet Handler TX Mode .31 6.4. Data Whitening, Manchester Encoding, and CRC 33 6.5. Synchronization Word Configuration .33 6.6. TX Retransmission and Auto TX 34 7. Auxiliary Functions 35 7.1. Smart Reset .35 7.2. Microcontroller Clock .36 7.3. General Purpose ADC .37 7.4. Temperature Sensor .38 7.5. Low Battery Detector .40 7.6. Wake-Up Timer .41 7.7. GPIO Configuration 43 8. Reference Design 44 9. Application Notes and Reference Designs . 45 10. Pin Descriptions: RFM42B/43B 46 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales hoperf.com