Maxim 71M6543F第四代多相电表SoC解决方案

Maxim公司的71M6543F, 71M6543H, 71M6543G和71M6543GH是Teridian第四代多相电表系统级芯片(SoC),集成了5MHz 8051兼容的MPU核,低功耗带数字温度补偿的实时时钟,闪存和LCD驱动器.器件内部具有22位Delta-Sigma ADC,七个模拟输入,数字温度补偿,精密基准电压源和32位计算引擎(CE),支持各种电表应用而外接元件非常少.本文介绍了71M6543F/H(G/GH)主要特性,方框图,系统框图,采用电流变压器的系统框图以及71M6543 REV 5.0演示板硬件指标,电路图,材料清单,PCB布局图以及调试板电路图,材料清单和PCB布局图.

The 71M6543F, 71M6543H, 71M6543G, and 71M6543GH are Teridian’s 4th-generation polyphase metering systems-on-chips (SoCs) with a 5MHz 8051-compatible MPU core, low-power real-time clock (RTC) with digital temperature compensation, flash memory, and LCD driver. Our Single Converter Technology® with a 22-bit delta-sigma ADC, seven analog inputs, digital metrology temperature compensation, precision voltage reference, and a 32-bit computation engine (CE) supports a wide range of metering applications with very few external components.

The 71M6543F, 71M6543H, 71M6543G and 71M6543GH support optional interfaces to the 71M6xx3 series of isolated sensors that offer BOM cost reduction, immunity to magnetic tamper, and enhanced reliability. The ICs feature ultra-low-power operation in active and battery modes, 5KB shared RAM, and 64KB (71M6543F, 71M6543H) or 128KB (71M6543G, 71M6543GH) of flash memory, which can be programmed with code and/or data during meter operation. High processing and sampling rates combined with differential inputs offer a powerful metering platform for commercial and industrial meters with up to class 0.2 accuracy (71M6543H, 71M6543GH).

A complete array of code development tools, demonstration code, and reference designs enable rapid development and certification of meters that meet all ANSI and IEC electricity metering standards worldwide.

The Teridian 71M6543 single-chip energy meter integrates all primary functional blocks required to implement a solid-state electricity meter. Included on the chip are:

• 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:

- Metrology (MPU)

- Automatic RTC in all power states

- MPU assisted RTC compensation

• 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

71M6543F/H主要特性:

• 0.1% Accuracy Over 2000:1 Current Range

• Exceeds IEC 62053/ANSI C12.20 Standards

• Seven Sensor Inputs with Neutral Current Measurement, Differential Mode Selectable for Current Inputs
• Selectable Gain of 1 or 8 for One Current Input to Support Shunts

• High-Speed Wh/VARh Pulse Outputs with Programmable Width

• 64KB Flash, 5KB RAM (71M6543F/H)

• 128KB Flash, 5KB RAM (71M6543G/GH)

• Up to Four Pulse Outputs with Pulse Count

• Four-Quadrant Metering, Phase Sequencing

• Digital Temperature Compensation:

Metrology Compensation

Accurate RTC for TOU Functions with Automatic Temperature Compensation for Crystal in All Power Modes

• Independent 32-Bit Compute Engine

• 46-64Hz Line Frequency Range with the Same Calibration

• Phase Compensation ( 7 )

• Three Battery-Backup Modes:

Brownout Mode LCD Mode Sleep Mode

• Wake-Up on Pin Events and Wake-on-Timer

• 1μA in Sleep Mode

• Flash Security

• In-System Program Update

• 8-Bit MPU (80515), Up to 5MIPS

• Full-Speed MPU Clock in Brownout Mode

• LCD Driver:

6 Common Segment Drivers

Up to 56 Selectable Pins

• Up to 51 Multifunction DIO Pins

• Hardware Watchdog Timer (WDT)

• I2C/MICROWIRE™EEPROM Interface

• SPI Interface with Flash Program Capability

• Two UARTs for IR and AMR

• IR LED Driver with Modulation

• Industrial Temperature Range

• 100-Pin Lead-Free LQFP Package

图1.71M6543F/H方框图

图2.采用三个遥控和一个本地(中线)传感器的71M6543F/H系统框图

图3.采用电流变压器的系统框图

71M6543演示板

The Teridian™ 71M6543 REV 4.0 and REV 5.0 Demo Boards are demonstration boards for evaluating the 71M6543F device for polyphase electronic power metering applications in conjunction with the Remote Sensor Interface or CT sensors. The Demo Boards allow the evaluation of the 71M6543F energy meter chip for meas-urement accuracy and overall system use.

The 71M6543 REV 4.0 Demo Board incorporates a 71M6543F integrated circuit, three 71M6103 or 71M6203 Remote Interface ICs, peripheral circuitry such as a serial EEPROM, emulator port, and on-board power supply, as well as a USB interface for serial communication with a PC.

The 71M6543 REV 5.0 Demo Board is optimized and prepared for the connection of external CTs and is other-wise identical to the REV 4.0 Demo Board.

All Demo Boards are pre-programmed with a Demo Program (Demo Code) in the FLASH memory of the 71M6543F IC. This embedded application is developed to exercise all low-level function calls to directly man-age the peripherals, flash programming, and CPU (clock, timing, power savings, etc.).

The 71M6543F IC on the REV 4.0 Demo Board is pre-programmed and pre-calibrated for the 50 μΩ or 120 μΩ shunts shipped with the board. The Demo Board may also be used for operation with a CT after hardware modi-fications that can be performed by the user. This configuration will require a different version of the Demo Code and different settings. It should be noted that the 71M6543 performs better with CTs when used with the 71M6543 REV 5.0演示板

演示板包括:

• 71M6543 Demo Board REV 4.0 with three 71M6203 or 71M6103 ICs and one 71M6543F IC with pre-loaded demo program, or 71M6543 Demo Board REV 5.0 with inputs configured for CTs.

• 5VDC/1,000mA universal wall transformer with 2.5mm plug (Switchcraft 712A compatible)

• USB Interface Module (USB/Serial Adapter)

• USB cable

• ANSI base with three 50 μΩ shunt resistors, Oswell P/N EBSB20050H-92-19-73-6.4-V1 (optional, for ANSI kits only)

•Three 120 μΩ shunt resistors, Oswell P/N EBSA15120-32-14.8-21-6.2-V1 (optional, for IEC kits)

图4.带调试板的Teridian 71M6543 REV4.0演示板框图

图5.71M6543 REV 4.0演示板概述图

图6.71M6543 REV 5.0演示板元件布局图(顶层)
71M6543 REV 5.0演示板硬件指标:



图7.71M6543 REV 5.0演示板电路图(1)

图8.71M6543 REV 5.0演示板电路图(2)

图9.71M6543 REV 5.0演示板电路图(3)

图10.71M6543 REV 5.0演示板电路图(4)


图11.带铁氧体的输入电路
71M6543 REV 5.0演示板材料清单:




图12.Teridian 71M6543 REV 5.0 演示板元件布局图(顶层)

图13.Teridian 71M6543 REV 5.0 演示板铜布局图(顶层)

图14.Teridian 71M6543 REV 5.0 演示板元件布局图(底层)

图15.Teridian 71M6543 REV 5.0 演示板铜布局图(底层)

图16.调试板电路图
调试板材料清单:


图17.调试板元件布局图(顶层)

图18.调试板元件布局图(底层)
详情请见:
71M6543F-71M6543H.pdf(2.13 MB, 下载次数: 15)

2012-8-2 00:29:12 上传

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和
UG5469.pdf(3.33 MB, 下载次数: 8)

2012-8-2 00:25:44 上传

下载次数: 8
下载积分: 积分 -1

来源：网络