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型号： 71M6543F-IGT/F
厂商： Maxim Integrated Products
文件页数： 121/154页
文件大小： 0K
描述： IC ENERGY METERING
标准包装： 90
系列： *
71M6543F/71M6543G Data Sheet
The CE pulse generator can be controlled by either the MPU (external) or CE (internal) variables. Control is by
the MPU if the EXT _ PULSE bit = 1 ( CE RAM 0x20[5] ). In this case, the MPU controls the pulse rate (external
pulse generation) by placing values into APULSEW and APULSER (CE RAM 0x45 and 0x49) . By setting
EXT _ PULSE = 0, the CE controls the pulse rate based on WSUM_X (CE RAM 0x84) and VARSUM_X (CE
RAM 0x88).
The 71M6543 Demo Code creep function halts both internal and external pulse generation.
Table 77: Sag Threshold, Phase Measurement, and Gain Adjust Control
CE
Address
Name
Default
Description
?? ?????? ?√2
?????????7 . 8798?10 ?9
0x24
0x40
0x41
0x42
0x43
0x44
SAG_THR
GAIN_ADJ0
GAIN_ADJ1
GAIN_ADJ2
GAIN_ADJ3
GAIN_ADJ4
2.39*10
16384
16384
16384
16384
16384
7
The voltage threshold for sag warnings. The default value is
equivalent to 80VRMS if VMAX = 600V.
SAG_THR =
The assignments of these gain adjustments depends on the
meter design. See 4.5.4 Temperature Compensation for VREF
and Shunt Sensors on page 89 or 4.5.5 Temperature
Compensation of VREF and Current Transformers on page 90.
The default value of 16384 corresponds to unity gain.
5.3.8
CE Transfer Variables
When the MPU receives the XFER_BUSY interrupt, it knows that fresh data is available in the transfer
variables. CE transfer variables are modified during the CE code pass that ends with an XFER_BUSY
interrupt. They remain constant throughout each accumulation interval. In this data sheet, the names of
CE transfer variables always end with _X. The transfer variables can be categorized as:
?
?
?
Fundamental energy measurement variables
Instantaneous (RMS) values
Other measurement parameters
Fundamental Energy Measurement Variables
Table 78 describes each transfer variable for fundamental energy measurement. All variables are signed
32-bit integers. Accumulated variables such as WSUM are internally scaled so they have at least 2x
margin before overflow when the integration time is one second. Additionally, the hardware does not permit
output values to fold back upon overflow.
Table 78: CE Transfer Variables (with Shunts)
LSB W = 7.7562*10
VMAX * IMAX Wh.
LSB W = 7.7562*10
VMAX * IMAX VARh.
CE
Address
0x84
0x85
0x86
0x87
0x88
0x89
0x8A
0x8B
v2
Name
WSUM_X
W0SUM_X
W1SUM_X
W2SUM_X
VARSUM_X
VAR0SUM_X
VAR1SUM_X
VAR2SUM_X
Description
The signed sum: W0SUM_X+W1SUM_X+W2SUM_X .
The sum of Wh samples from each wattmeter
element.
-13
The signed sum:
VAR0SUM_X+VAR1SUM_X+VAR2SUM_X.
The sum of VARh samples from each wattmeter
element.
-13
Configuration
Figure 31 (page 86 )
121
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71M6543F-IGTR/F 功能描述:计量片上系统 - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6543FT-IGT/F 制造商:Maxim Integrated Products 功能描述:ENERGY METER ICS - Rail/Tube
71M6543FT-IGTR/F 制造商:Maxim Integrated Products 功能描述:3-PHASE SOC, 64KB FLASH, PRES TEMP SENSOR - Tape and Reel
71M6543G 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation
71M6543GH 制造商:未知厂家 制造商全称:未知厂家 功能描述:电表IC
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