71M6515H Datasheet, PDF (32/57 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6515H
Energy Meter IC
DATA SHEET
MARCH 2008
At high pulse rates, duty cycle is 50%. At rates less than 1/(2*PWmax), the negative going pulse width is PWmax. The
allowed range is 0 to 2³¹-1.
The pulse width for the PULSE3 and PULSE4 outputs is always at a 50% duty cycle.
The initial voltage level of the pulse pins is defined with the PULSE_INIT pin.
Value in Pulse
Source Register
(hex) (dec)
0x00
0
0x01
1
0x02
2
0x03
3
0x04
4
0x05
5
0x06
6
0x07
7
0x08
8
0x09
9
0x0A
10
0x0B
11
0x0C
12
0x0D
13
0x0E
14
0x0F
15
Name
Description
WSUM
WASUM
WBSUM
WCSUM
VARSUM
VARASUM
VARBSUM
VARCSUM
VASUM
VAASUM
VABSUM
VACSUM
INSQSUM
IASQSUM
IBSQSUM
ICSQSUM
The signed sum: W0SUM + W1SUM + W2SUM
The sum of Wh samples from individual wattmeter elements.
LSB = 9.4045*10^-13 VMAX IMAX / In_8 Wh
The signed sum: VAR0SUM + VAR1SUM + VAR2SUM
The sum of VARh samples from individual wattmeter elements.
LSB = 9.4045*10^-13 VMAX IMAX / In_8 VARh
The sum of VAh samples from individual samples.
The sum of VAh samples from individual wattmeter elements.
LSB = 9.4045*10^-13 VMAX IMAX / In_8 VAh
The sum of the square of the calculated neutral current.
∑ ^(I0 ^{+ I}1 ^{+ I}2^)2.
LSB = 9.4045*10^-13 IMAX² / In_8² A²h
The sum of squared current samples from each element.
LSB = 9.4045*10^-13 IMAX² / In_8² A²h
Table 6: Pulse Sources Defined by the PULSE_SRCS Register (1/2)
Page: 32 of 57
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