MAX78615-LMU 데이터 시트보기 (PDF) - Maxim Integrated

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MAX78615-LMU

Isolated Energy Measurement Processor for Load Monitoring Units

Maxim Integrated 

MAX78615+LMU Data Sheet

Table of Figures

Figure 1. SPI Timing .........................................................................................................................................7

Figure 2. I2C Timing..........................................................................................................................................8

Figure 3. TQFN Package Pinout .......................................................................................................................9

Figure 4. Block Diagram.................................................................................................................................11

Figure 5. Crystal Connections ........................................................................................................................12

Figure 6. Connecting the RESET Pin ...........................................................................................................13

Figure 7. Defining Source Voltages................................................................................................................19

Figure 8. Computing Source Voltage .............................................................................................................19

Figure 9. Voltage Input Flowchart .................................................................................................................20

Figure 10. Current Input Configuration ......................................................................................................... 21

Figure 11. Computing Input Current ............................................................................................................. 21

Figure 12. Current Input Flowchart ...............................................................................................................22

Figure 13. Peak Voltage Measurement .........................................................................................................25

Figure 14. RMS Voltage Measurement .........................................................................................................26

Figure 15. Peak Current Measurement .........................................................................................................26

Figure 16. RMS Current Measurement .........................................................................................................27

Figure 17. Active Power Measurement.........................................................................................................28

Figure 18. Reactive Power Measurement .....................................................................................................29

Figure 19. Apparent Power Measurement....................................................................................................29

Figure 20. Min/Max Tracking ........................................................................................................................33

Figure 21. Measuring Voltage Sag .................................................................................................................35

Figure 22. Relay Control ................................................................................................................................38

Figure 23. Configuring for RS-485 .................................................................................................................47

Figure 24. Device Address Configuration ......................................................................................................48

Figure 25. SSI Protocol Description ...............................................................................................................49

Figure 26. Master Packet Structure...............................................................................................................49

Figure 27. SPI Clock Polarity and Phase.........................................................................................................53

Figure 28. SPI Transfer Example ....................................................................................................................55

Figure 29. SPI Transaction Example...............................................................................................................55

Figure 30. Connecting the I2C Interface.........................................................................................................56

Figure 31. I2C Device Address Configuration .................................................................................................57

Figure 32. I2C Fundamental Bus Characteristics............................................................................................58

Figure 33. I2C Device Addressing ...................................................................................................................58

Figure 34. I2C Write Operation ......................................................................................................................59

Figure 35. I2C Multiple Write Operation........................................................................................................59

Figure 36. I2C Read Operation .......................................................................................................................60

Figure 37. Setting the Register Address Pointer............................................................................................60

Figure 38. I2C Multiple Read Operation.........................................................................................................60

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