AT73C500 데이터 시트보기 (PDF) - Atmel Corporation
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AT73C500 Datasheet PDF : 28 Pages
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Figure 1. Block diagram of the AT73C500 chipset in stand-alone configuration
EXTERNAL CONNECTOR
L1 L2 L3
L1
L2
L3
VREF
BGD
VI1
VI2
VI3
CI1
CI2
CI3
RESET
CS
VDA
VDDA
VCC
AT73501
SIX SINGLE-ENDED,
INDEPENDENT
SIGMA-DELTA
CONVERTERS
PFAIL
ACK
DATA
CLKR
CLK
AGND
XI XO
MODE
VSA
VSSA
GND
VCC
BRDY
STROBE
RD/WR
ADDR1
AT73500
ADDR0
IRQ0
IRQ1
&
SOUT1
SOUT0
SIN
SCLK
DEDICATED DSP
FOR ENERGY
METERING
DATA BUS
XRES
STATUS BUS
GND
1
-VArh
+VArh
-Wh
+Wh
+Wh
-Wh
+VArh
-VArh
1
&
&
RESET
1
CS
AT93C46
SK
DO
DI
EEPROM
128*8 bit
MODE2
MODE1 1
MODE0 1
1
1
TAMP
STUP
L3
L2
L1
FAIL
DATRDY
INI
The AT73C500 is programmed to measure active, reactive
and apparent phase powers. Phase factors, phase volt-
ages, phase currents and line frequency are also mea-
sured, simultaneously. Based on the individual phase
powers, total active power is determined.
The power values are calculated over one-line frequency
cycle. The negative and positive results are accumulated in
different registers, which allows for separate billing of
imported and exported active energy. Also, the reactive
results are sorted depending on whether capacitive or
inductive load is applied.
Eight pulse outputs are provided. Each billing quantity
(+Wh, -Wh, +VArh, -Varh) is supplied with its own meter
constant output, as well as a display counter output. In
multi-channel mode, AT73C500 performs the functions of
three independent single phase Wh meters and three
impulse outputs are available, one for each meter element.
All measurement information is available on an 8-bit micro-
processor bus. The results are output in six packages, 16
bytes each. Mode and status information of the meter is
also transferred with each data block.
Figure 2. Block diagram of the AT73C500 chipset in microprocessor configuration
L1 L2 L3
L1
L2
L3
VREF
BGD
VI1
VI2
VI3
CI1
CI2
CI3
RESET
CS
VDA
VDDA
VCC
AT73501
SIX SINGLE-ENDED,
INDEPENDENT
SIGMA-DELTA
CONVERTERS
PFAIL
ACK
DATA
CLKR
CLK
AGND
XI XO
MODE
VSA
VSSA
GND
BRDY
IRQ0
IRQ1
SIN
SCLK
XRES
VCC
AT73500
DEDICATED DSP
FOR ENERGY
METERING
STROBE
RD/WR
ADDR1
ADDR0
SOUT1
SOUT0
DATA BUS
STATUS BUS
GND
AT90Sxx
D
DATRDY
MICROCONTROLLER
B9
&
1
MODEM
LCD
RESET
1
MODE2
B14
MODE1 1
B13
MODE0 1
B12
1
1
EEPROM
2
AT73C500
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