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参数资料
| 型号： | 71M6521FE-IMR/F |
| 厂商： | Maxim Integrated |
| 文件页数： | 83/107页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 32K FLASH 68-QFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | Single Converter Technology® |
| 测量误差： | 0.4% |
| 电源电压： | 3 V ~ 3.6 V |
| 测量仪表类型： | 单相，双相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-VFQFN 裸露焊盘 |
| 供应商设备封装： | 64-QFN（7.5x7.5） |
| 包装： | 带卷 (TR) |
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71M6521DE/DH/FE Data Sheet
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.
I0SQSUM
EQU
Watt & VAR Formula
(WSUM/VARSUM)
W0SUM/
VAR0SUM
Element Input Mapping
W1SUM/
VAR1SUM
I1SQSUM
0
1
2
VA IA (1 element, 2W 1 φ )
with tamper detection
VA*(IA-IB)/2
(1 element, 3W 1 φ )
VA*IA + VB*IB
(2 element, 4W 2 φ )
VA*IA
VA*(IA-IB)/2
VA*IA
VA*IB
VA*IB/2
VB*IB
IA
IA-IB
IA
IB
IB
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
0x7A
Name
CESTATUS
Description
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.
Rev 3
Page: 83 of 107
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6521-TGP1-68M | 制造商:Maxim Integrated Products 功能描述:Programmer Accessories Gang Programmer Base w/6521 Socket Brd |
| 71M6523-DB | 功能描述:开发板和工具包 - 8051 71M6521D Demo Brd RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压: |
| 71M6523-IM | 功能描述:计量片上系统 - SoC Residential 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 |
| 71M6523-IM/F | 功能描述:计量片上系统 - SoC Residential 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 |
| 71M6523-IMR | 功能描述:计量片上系统 - SoC Residential 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 |
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