Data Sheet

Page 2
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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