RFM95 Datasheet, PDF (2/121 Pages) List of Unclassifed Manufacturers – Low Power Long Range Transceiver Module

RFM95/96/97/98（W）
Section
Page
1. General Description ................................................................................................................................................. 9
1.1. Simplified Block Diagram ................................................................................................................................. 9
1.2. Product Versions .........................................................................................................................................10
1.3. Pin Diagram ................................................................................................................................................... 10
1.4. Pin Description ............................................................................................................................................... 11
2. Electrical Characteristics ....................................................................................................................................... 12
2.1. ESD Notice .................................................................................................................................................... 12
2.2. Absolute Maximum Ratings ........................................................................................................................... 12
2.3. Operating Range............................................................................................................................................ 12
2.4. Chip Specification .......................................................................................................................................13
2.4.1. Power Consumption .................................................................................................................................. 13
2.4.2. Frequency Synthesis................................................................................................................................. 13
2.4.3. FSK/OOK Mode Receiver ......................................................................................................................... 14
2.4.4. FSK/OOK Mode Transmitter ..................................................................................................................... 15
2.4.5. Electrical specification for LoraTM modulation.......................................................................................... 16
2.4.6. Digital Specification ................................................................................................................................... 19
3. RFM95/96/97/98(W) Features................................................................................................................................ 20
3.1. LoRaTM Modem ............................................................................................................................................. 21
3.2. FSK/OOK Modem ........................................................................................................................................... 21
4. RFM95/96/97/98(W) Digital Electronics ................................................................................................................. 22
4.1. The LoRaTM Modem ..................................................................................................................................... 22
4.1.1. Link Design Using the LoRaTM Modem .................................................................................................23
4.1.2. LoRaTM Digital Interface ........................................................................................................................29
4.1.3. Operation of the LoRaTM Modem ............................................................................................................. 31
4.1.4. Frequency Settings ................................................................................................................................32
4.1.5. LoRaTM Modem State Machine Sequences ...........................................................................................33
4.2. FSK/OOK Modem .......................................................................................................................................... 41
4.2.1. Bit Rate Setting ......................................................................................................................................... 41
4.2.2. FSK/OOK Transmission ............................................................................................................................ 42
4.2.3. FSK/OOK Reception ................................................................................................................................. 43
4.2.4. Operating Modes in FSK/OOK Mode ........................................................................................................ 50
4.2.5. Startup Times ............................................................................................................................................ 50
4.2.6. Receiver Startup Options .......................................................................................................................... 53
4.2.7. Receiver Restart Methods......................................................................................................................... 54
4.2.8. Top Level Sequencer ................................................................................................................................ 55
4.2.9. Data Processing in FSK/OOK Mode ......................................................................................................... 60
4.2.10. FIFO .....................................................................................................................................................61
4.2.11. Digital IO Pins Mapping ........................................................................................................................... 64
4.2.12. Continuous Mode .................................................................................................................................... 65
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