ATM90E32AS-AU-R datasheet(55/84 Pages) ATMEL

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M90E32AS [DATASHEET]

Atmel-46003B-SE-M90E32AS-Datasheet_02122015

5.4

CONFIGURATION AND CALIBRATION REGISTERS

5.4.1

CONFIGURATION REGISTERS

PLconstH

High Word of PL_Constant

Table-6 Configuration Registers

Address

Read/Write

Type

Functional Description

Power-on Value and Comments

Configuration Registers

31H

PLconstH

R/W

High Word of PL_Constant

0861H

32H

PLconstL

R/W

Low Word of PL_Constant

C468H

33H

MMode0

R/W

HPF/Integrator On/Off, CF and all-phase

energy computation configuration

0087H

34H

MMode1

R/W

Pga Gain Configuration

0000H

35H

PStartTh

R/W

Active Startup Power Threshold.

0000H.

16 bit unsigned integer, Unit:

0.00032 Watt

36H

QStartTh

R/W

Reactive Startup Power Threshold.

0000H

16 bit unsigned integer, Unit:

0.00032 var

37H

SStartTh

R/W

Apparent Startup Power Threshold.

0000H

16 bit unsigned integer, Unit:

0.00032 VA

38H

PPhaseTh

R/W

Startup power threshold (for |P|+|Q| of a

phase) for any phase participating Active E

nergy Accumulation. Common for phase A/

B/C.

0000H

16 bit unsigned integer,

Unit: 0.00032 Watt/var

39H

QPhaseTh

R/W

Startup power threshold (for |P|+|Q| of a

phase) for any phase participating ReAc-

tive Energy Accumulation. Common for

phase A/B/C.

0000H

16bit unsigned integer,

Unit: 0.00032 Watt/var

3AH

SPhaseTh

Startup power threshold (for |P|+|Q| of a

phase) for any phase participating Appar-

ent Energy Accumulation. Common for

phase A/B/C.

0000H

16 bit unsigned integer,

Unit: 0.00032 Watt/var

Address: 31H

Type: Read/Write

Default Value: 0861H

Bit

Name

Description

15:0

PLcon-

stH[15:0]

The PLconstH[15:0] and PLconstL[15:0] bits are high word and low word of PL_Constant respectively.

PL_Constant is a constant which is proportional to the sampling ratios of voltage and current, and

inversely proportional to the Meter Constant. PL_Constant is a threshold for energy calculated inside the

chip, i.e., energy larger than PL_Constant will be accumulated as 0.01CFx in the corresponding energy

registers and then output on CFx if one CF reaches.

It is suggested to set PL_constant as a multiple of 4 so as to double or redouble Meter Constant in low

current state to save verification time.

ATM90E32AS-AU-R Datasheet(PDF) 55 Page - ATMEL Corporation

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