M90E36A_14 datasheet(4/87 Pages) ATMEL

Part #	M90E36A

Description	Enhanced Poly-Phase High-Performance Wide-Span

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Manufacturer	ATMEL [ATMEL Corporation]

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M90E36A [DATASHEET]

Atmel-46004A-SE-M90E36A-Datasheet_052214

FEATURES .......................................................................................................................................... 1

APPLICATION ..................................................................................................................................... 2

GENERAL DESCRIPTION................................................................................................................... 2

BLOCK DIAGRAM............................................................................................................................... 3

1 PIN ASSIGNMENT .......................................................................................................................... 8

2 PIN DESCRIPTION .......................................................................................................................... 9

3 FUNCTION DESCRIPTION ........................................................................................................... 11

3.1 POWER SUPPLY ...................................................................................................................................................11

3.2 CLOCK ...................................................................................................................................................................11

3.3 RESET ....................................................................................................................................................................11

3.3.1 RESET Pin .................................................................................................................................................. 11

3.3.2 Power On Reset (POR) ............................................................................................................................. 11

3.3.3 Software Reset .......................................................................................................................................... 11

3.4 METERING FUNCTION .........................................................................................................................................12

3.4.1 Theory of Energy Registers ..................................................................................................................... 12

3.4.2 Energy Registers ....................................................................................................................................... 14

3.4.3 Energy Pulse Output ................................................................................................................................. 14

3.4.4 Startup and No-load Power ...................................................................................................................... 15

3.5 MEASUREMENT FUNCTION ................................................................................................................................16

3.5.1 Active/ Reactive/ Apparent Power ........................................................................................................... 16

3.5.2 Fundamental / Harmonic Active Power ................................................................................................... 16

3.5.3 Mean Power Factor (PF) ........................................................................................................................... 16

3.5.4 Voltage / Current RMS .............................................................................................................................. 16

3.5.5 Phase Angle ............................................................................................................................................... 17

3.5.6 Frequency .................................................................................................................................................. 17

3.5.7 Temperature .............................................................................................................................................. 17

3.5.8 THD+N for Voltage and Current ............................................................................................................... 17

3.6 FOURIER ANALYSIS FUNCTION .........................................................................................................................18

3.7 POWER MODE ......................................................................................................................................................19

3.7.1 Normal Mode (N Mode) ............................................................................................................................. 19

3.7.2 Idle Mode (I Mode) ..................................................................................................................................... 20

3.7.3 Detection Mode (D Mode) ......................................................................................................................... 22

3.7.4 Partial Measurement mode (M Mode) ...................................................................................................... 23

3.7.5 Transition of Power Modes ...................................................................................................................... 24

3.8 EVENT DETECTION ..............................................................................................................................................25

3.8.1 Zero-Crossing Detection .......................................................................................................................... 25

3.8.2 Sag Detection ............................................................................................................................................ 25

3.8.3 Phase Loss Detection ............................................................................................................................... 25

3.8.4 Neutral Line Overcurrent Detection ........................................................................................................ 25

3.8.5 Phase Sequence Error Detection ............................................................................................................ 25

3.9 DC AND CURRENT RMS ESTIMATION ...............................................................................................................25

4 SPI / DMA INTERFACE ................................................................................................................. 26

4.1 INTERFACE DESCRIPTION .................................................................................................................................26

4.2 SLAVE MODE: SPI INTERFACE ..........................................................................................................................27

4.2.1 SPI Slave Interface Format ....................................................................................................................... 27

4.2.2 Reliability Enhancement Feature ............................................................................................................. 28

Table of Contents

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