STPM10 datasheet(3/47 Pages) STMICROELECTRONICS

3 / 47 page

STPM10

Contents

DocID17728 Rev 5

3/47

7.18

Mode signals ................................................................................... 31

7.19

SPI interface.................................................................................... 31

7.20

Remote reset................................................................................... 32

7.21

Reading data records...................................................................... 33

7.22

Writing procedure............................................................................ 34

7.22.1

Interfacing the standard 3-wire SPI with the STPM10 SPI............... 35

7.23

Energy calculation algorithm ........................................................... 36

7.23.1

Active power ..................................................................................... 36

7.23.2

Reactive power ................................................................................. 38

7.23.3

Apparent power and RMS values..................................................... 39

7.24

STPM10 calibration......................................................................... 39

Application design ........................................................................ 42

Package information ..................................................................... 44

9.1

TSSOP20 package information....................................................... 44

Revision history ............................................................................ 46

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