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參數資料
| 型號： | 71M6521FE-IGT/F |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QFP64 |
| 封裝： | LEAD FREE, LQFP-64 |
| 文件頁數： | 84/103頁 |
| 文件大?。?/td> | 1691K |
| 代理商： | 71M6521FE-IGT/F |
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71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
OCTOBER 2010
v1.1
2005-2010 Teridian Semiconductor Corporation
Page: 81 of 103
A Maxim Integrated Products Brand
19-5370; 10/10
During operation, the MPU is in charge of controlling the multiplexer cycles, for example by inserting an alternate multiplexer
sequence at regular intervals using MUX_ALT. This enables temperature measurement. The polarity of chopping circuitry must
be altered for each sample. It must also alternate for each alternate multiplexer reading. This is accomplished by maintaining
CHOP_E = 00.
CE Calculations
The CE performs the precision computations necessary to accurately measure energy. These computations include offset
cancellation, products, product smoothing, product summation, frequency detection, VAR calculation, sag detection, peak
detection, and voltage phase measurement. All data computed by the CE is dependent on the selected meter equation as
given by EQU (in I/O RAM). Although EQU=0 and EQU=2 have the same element mapping, the MPU code can use the value
of EQU to decide if element 2 is used for tamper detection (typically done by connecting VB to VA) or as a second independent
element.
EQU
Watt & VAR Formula
(WSUM/VARSUM)
Element Input Mapping
W0SUM/
VAR0SUM
W1SUM/
VAR1SUM
I0SQSUM
I1SQSUM
0
VA IA (1 element, 2W 1
φ)
with tamper detection
VA*IA
VA*IB
IA
IB
1
VA*(IA-IB)/2
(1 element, 3W 1
φ)
VA*(IA-IB)/2
VA*IB/2
IA-IB
IB
2
VA*IA + VB*IB
(2 element, 4W 2
φ)
VA*IA
VB*IB
IA
IB
CE STATUS
Since the CE_BUSY interrupt occurs at 2520.6Hz, it is desirable to minimize the computation required in the interrupt handler
of the MPU. The MPU can read the CE status word at every CE_BUSY interrupt.
CE
Address
Name
Description
0x7A
CESTATUS
See description of CE status word below
The CE Status Word is used for generating early warnings to the MPU. It contains sag warnings for VA as well as F0, the
derived clock operating at the fundamental input frequency. CESTATUS provides information about the status of voltage and
input AC signal frequency, which are useful for generating early power fail warnings, e.g. to initiate necessary data storage.
CESTATUS represents the status flags for the preceding CE code pass (CE busy interrupt). Sag alarms are not remembered
from one code pass to the next. The CE Status word is refreshed at every CE_BUSY interrupt.
相關PDF資料 |
PDF描述 |
|---|---|
| 71M6531D-IMR/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC68 |
| 71M6532D-IGTR/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP100 |
| 71M6532F-IGT/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP100 |
| 71M6531D-IM/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC68 |
| 71M6531F-IMR/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC68 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 71M6521FE-IGTR | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC |
| 71M6521FE-IGTR/F | 功能描述:計量片上系統 - SoC Residential Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數據 RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 71M6521FE-IGTR/F1 | 功能描述:計量片上系統 - SoC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數據 RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 71M6521FE-IM | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC |
| 71M6521FE-IM/F | 功能描述:計量片上系統 - SoC Residential Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數據 RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
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