Data Sheet

ManualsBrandsSeeedStudio ManualsData Communication and Human Input DevicesGrove LoRa Radio 868MHz

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RFM95/96/97/98

Section Page

Table 1. RFM95/96/97/98 Device Variants and Key Parameters ..................................................................................10

Table 2. Absolute Maximum Ratings .............................................................................................................................12

Table 3. Operating Range .............................................................................................................................................12

Table 4. Power Consumption Specification ...................................................................................................................13

Table 5. Frequency Synthesizer Specification ..............................................................................................................13

Table 6. FSK/OOK Receiver Specification ....................................................................................................................14

Table 7. Transmitter Specification .................................................................................................................................15

Table 8. LoRa Receiver Specification. ..........................................................................................................................17

Table 9. Digital Specification .........................................................................................................................................19

Table 10. Example LoRaTM Modem Performances .....................................................................................................22

Table 11. Range of Spreading Factors ..........................................................................................................................24

Table 12. Cyclic Coding Overhead ................................................................................................................................24

Table 13. LoRaTM Operating Mode Functionality .........................................................................................................31

Table 14. LoRa CAD Consumption Figures ..................................................................................................................40

Table 15. DIO Mapping LoRaTM Mode .........................................................................................................................41

Table 16. Bit Rate Examples .........................................................................................................................................42

Table 17. Preamble Detector Settings ...........................................................................................................................48

Table 18. RxTrigger Settings to Enable Timeout Interrupts ..........................................................................................49

Table 19. Basic Transceiver Modes ..............................................................................................................................50

Table 20. Receiver Startup Time Summary ..................................................................................................................51

Table 21. Receiver Startup Options ..............................................................................................................................54

Table 22. Sequencer States ..........................................................................................................................................55

Table 23. Sequencer Transition Options .......................................................................................................................56

Table 24. Sequencer Timer Settings .............................................................................................................................58

Table 25. Status of FIFO when Switching Between Different Modes of the Chip .........................................................62

Table 26. DIO Mapping, Continuous Mode ...................................................................................................................64

Table 27. DIO Mapping, Packet Mode ............................................................................................

..............................64

Table 28. CRC Description ...........................................................................................................................................72

Table 29. Power Amplifier Mode Selection Truth Table ................................................................................................78

Table 30. High Power Settings ......................................................................................................................................79

Table 31. Operating Range, +20dBm Operation ...........................................................................................................79

Table 32. Operating Range, +20dBm Operation ...........................................................................................................79

Table 33. Trimming of the OCP Current ........................................................................................................................80

Table 34. LNA Gain Control and Performances ............................................................................................................81

Table 35. RssiSmoothing Options .................................................................................................................................82

Table 36. Available RxBw Settings ................................................................................................................................82

Table 37. Registers Summary .......................................................................................................................................84

Table 38. Register Map .................................................................................................................................................87

Table 39. Low Frequency Additional Registers ...........................................................................................................100