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| 型号： | 71M6543F-IGT/F |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/154页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING |
| 标准包装： | 90 |
| 系列： | * |
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71M6543F/71M6543G Data Sheet
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2.1
Hardware Description
Hardware Overview
The 71M6543 single-chip energy meter integrates all primary functional blocks required to implement a
solid-state electricity meter. Included on the chip are:
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An analog front-end (AFE) featuring a 22-bit second-order sigma-delta ADC
An independent 32-bit digital computation engine (CE) to implement DSP functions
An 8051-compatible microprocessor (MPU) which executes one instruction per clock cycle (80515)
A precision voltage reference (VREF)
A temperature sensor for digital temperature compensation of:
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Metrology (MPU)
Automatic RTC in all power states
MPU assisted RTC compensation
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LCD Driver
RAM and Flash memory
A real time clock (RTC)
A variety of I/O pins
A power failure interrupt
A zero-crossing interrupt
Selectable current sensor interfaces for locally-connected sensors as well as isolated sensors (i.e.,
using the 71M6xx3 companion IC with a shunt resistor sensor)
Resistive Shunt and Current Transformers are supported
In order to implement a polyphase meter with or without neutral current sensing, one resistive shunt
current sensor may be connected directly (non-isolated) to the 71M6543 device, while up to three
additional current shunts are isolated using a companion 71M6xx3 isolated sensor IC. An inexpensive,
small size pulse transformer is used to electrically isolate the 71M6xx3 remote sensor from the 71M6543.
The 71M6543 performs digital communications bi-directionally with the 71M6xx3 and also provides power
to the 71M6xx3 through the isolating pulse transformer. Isolated (remote) shunt current sensors are
connected to the differential input of the 71M6xx3. The 71M6543 may also be used with Current
Transformers; in this case the 71M6xx3 isolated sensors are not required. Included on the 71M6xx3
companion isolator chip are:
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Digital isolation communications interface
An analog front-end (AFE) featuring a 22-bit second-order sigma-delta ADC
A precision voltage reference (VREF)
A temperature sensor (for current-sensing digital temperature compensation)
A fully differential shunt resistor sensor input
A pre-amplifier to optimize shunt current sensor performance
Isolated power circuitry obtains dc power from pulses sent by the 71M6543
(Wh) and reactive energy (VARh), as well as A h, and V h for four-quadrant metering. These measurements
In a typical application, the 32-bit compute engine (CE) of the 71M6543 sequentially processes the
samples from the voltage inputs on analog input pins and performs calculations to measure active energy
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are then accessed by the MPU, processed further and output using the peripheral devices available to the
MPU.
In addition to advanced measurement functions, the real time clock (RTC) function allows the 71M6543 to
record time of use (TOU) metering information for multi-rate applications and to time-stamp tamper or other
events. An automatic RTC temperature compensation circuit operates in all power states including when the
MPU is halted, and continues to compensate using back-up battery power during power outages.
Measurements can be displayed on 3.3 V LCDs commonly used in low-temperature environments. The
integrated charge pump and temperature sensor can be used by the MPU to enhance 3.3 V LCD
performance at cold temperatures. The on-chip charge pump may also drive 5 V LCDs. Flexible mapping of
LCD display segments facilitates the integration of existing custom LCDs. Design trade-off between the
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相关PDF资料 |
PDF描述 |
|---|---|
| 71M6545-IGT/F | IC ENERGY METERING |
| 720-10007-00300 | CBL D-SUB 9PIN FMAL-25PIN FML 3M |
| 720-10010-00025 | CBL DSUB 9PIN FML-25PIN MAL .25M |
| 720-10020-00300 | CBL DSUB 9PIN FML-9PIN MALE 3M |
| 720-10021-00300 | CBL DSUB 9PIN FML-9PIN FEMAL 3M |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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