STPM10 datasheet(3/51 Pages) STMICROELECTRONICS

No. de pieza	STPM10

Descripción Electrónicos	Programmable single-phase energy metering IC with tamper detection

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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3 / 51 page

STPM10

Contents

Doc ID 17728 Rev 3

3/51

7.14

Energy to frequency conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

7.15

Status bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.16

Programming the STPM10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.16.1

Data records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.17

Configuration bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.18

Mode signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

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 . . . . . . . . . . 36

7.23

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

7.23.1

Active power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.23.2

Reactive power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.23.3

Apparent power and RMS values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.24

STPM10 calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8

Application design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

10

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

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