RFM68CW Datasheet, PDF (2/20 Pages) List of Unclassifed Manufacturers – Low Cost ISM Transmitter Module

RFM68CW
Table of contents
Section
Page
1. Circuit Description.................................................................................................................................................... 3
1.1. General Description ......................................................................................................................................... 3
1.2. Block Diagram.................................................................................................................................................. 3
1.3. Pin Description,............................................................................................................................................ 4
2. Electrical Characteristics ......................................................................................................................................... 5
2.1. ESD Notice ...................................................................................................................................................... 5
2.2. Absolute Maximum Ratings ............................................................................................................................. 5
2.3. Operating Range.............................................................................................................................................. 5
2.4. Electrical Specifications....................................................................................................................................... 6
3. Timing Characteristics ............................................................................................................................................. 7
4. Application Modes of the RFM68CW.........................................................................................................................8
4.1. Transmitter Modes ........................................................................................................................................... 8
4.2. Mode Selection Flowchart................................................................................................................................ 9
4.3. Application Mode: Power & Go ....................................................................................................................... 10
4.4. Application Mode: Advanced ......................................................................................................................... 10
4.4.1. Advanced Mode: Configuration............................................................................................................... 10
4.4.2. Frequency Hopping Spread Spectrum.................................................................................................... 10
4.5. Frequency Band Coverage ............................................................................................................................ 11
4.6. Power Consumption.........................................................................................................................................11
5. RFM68CW Configuration.........................................................................................................................................12
5.1. TWI Access ......................................................................................................................................................12
5.2. APPLICATION Configuration Parameters ..................................................................................................... 14
5.3. FREQUENCY Configuration Parameters ...................................................................................................... 14
5.4. Test Parameters (internal) ............................................................................................................................. 15
5.5. Status Parameters ......................................................................................................................................... 15
5.6. Recovery Command ....................................................................................................................................... 16
6. Application Information .......................................................................................................................................... 17
6.1. Reference Design .......................................................................................................................................... 17
6.2. NRESET Pin ................................................................................................................................................... 18
6.3. TX_READY Pin ............................................................................................................................................... 18
6.4. Low Power Optimization ................................................................................................................................. 18
6.4.1. 2 Connections: CTRL, DATA ................................................................................................................... 18
6.4.2. 3 Connections: CTRL, DATA, TX_READY .............................................................................................. 18
7. RFM68CW Packaging ..............................................................................................................................................19
7.1. S2 Package Outline Drawing ...........................................................................................................................19
8. Ordering Information………………………………………………………………………………………………………….20
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