SA9603C Datasheet, PDF (9/18 Pages) Sames – SINGLE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH SERIAL INTERFACE

Commands for the voltage integrator
RD
RD
SA9603C
RES
RES
RD/
RES
RD
RES
DUM P
DR-01362
S TA RT
BIT
DUM P
S TO P
BIT
The register access codes which may be written to the SA9603C via the serial
communications port, are shown in the table below:
REGISTER
ACTIVE
RE-ACTIVE
FREQUENCY
VOLTAGE
READ
$01
$81
$41
$C1
RESET
$02
$82
-
$C2
READ-RESET
$03
$83
-
$C3
DUMP
$05^#
$84
$44
$C4
#_{Note: The Dump Active ($04) and Read Active ($01) commands have the same}
effect.
Data on SOUT
8 9 10 11 12 13 14 15
F IR S T B Y T E
D R -00835
01 2345 67
SECO ND BYTE
From the two bytes of data output by the device, the value for the register can
be derived as shown:
Register value = (First Byte * 256) + Second Byte
The register value is represented in two's compliment in order to provide for
positive and negative register values.
The most significant bit of the 16 bit energy register (active or reactive) may be
used as an indication of the direction of the energy flow (0 = positive, 1 =
negative).
sames
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