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参数资料
| 型号： | 71M6513H-IGTR/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 封装： | LEAD FREE, LQFP-100 |
| 文件页数： | 94/104页 |
| 文件大小： | 1390K |
| 代理商： | 71M6513H-IGTR/F |
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71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
SEPTEMBER 2011
2005-2011 Teridian Semiconductor Corporation
Page: 9 of 104
A Maxim Integrated Products Brand
HARDWARE DESCRIPTION
Hardware Overview
The 71M6513 single-chip polyphase meter integrates all primary functional blocks required to implement a solid-state
electricity meter. Included on chip are an analog front end (AFE), an 8051-compatible microprocessor (MPU) which executes
one instruction per clock cycle (80515), an independent 32-bit digital computation engine (CE), a voltage reference, a
temperature sensor, LCD drivers, RAM, flash memory, a real time clock (RTC), and a variety of I/O pins. Various current
sensor technologies are supported including Current Transformers (CT), Resistive Shunts, and Rogowski (di/dt) Coils.
In addition to advanced measurement functions, the real time clock function allows the 71M6513/6513H to record time of use
(TOU) metering information for multi-rate applications. Measurements can be displayed on either a 3V or a 5V LCD. Flexible
mapping of LCD display segments will facilitate integration with any LCD format. The design trade-off between the number of
LCD segments and DIO pins can be flexibly configured using memory-mapped I/O to accommodate various requirements.
The 71M6513 includes several I/O peripheral functions that improve the functionality of the device and reduce the component
count for most meter applications. The I/O peripherals include two UARTs, digital I/O, comparator inputs, LCD display drivers,
I
2C interface and an optical/IR interface.
One of the two internal UARTs (UART1) is adapted to support an Infrared LED with internal drive output and sense input but it
can also function as a standard UART.
A block diagram of the chip is shown in Figure 1. A detailed description of various hardware blocks follows.
Analog Front End (AFE)
The AFE of the 71M6513 Power Meter IC is comprised of an input multiplexer, a delta-sigma A/D converter with a voltage
reference, followed by an FIR filter. A block diagram of the AFE is shown in Figure 3.
Multiplexer
The input multiplexer supports eight input signals that are applied to the pins IA, VA, IB, VB, IC, VC, and V3 plus the output of
the internal temperature sensor. The multiplexer can be operated in two modes:
During a normal multiplexer cycle, the signals from the six pins IA, VA, IB, VB, IC, and VC are selected.
During the alternate multiplexer cycle, the temperature signal (TEMP) and the additional monitor input, V3, are
selected, along with the other signal sources shown in Table 1: Inputs Selected in Regular and Alternate Multiplexer
Alternate multiplexer cycles are usually performed infrequently (every second or so). VA, VB, and VC are not replaced in the
alternate multiplexer cycles. In some equations, currents must be delayed in allpass networks and therefore cannot be
replaced in the alternate selection. Missing samples due to alternate multiplexer cycles are automatically interpolated by the
CE.
Regular multiplexer sequence
Mux State:
Alternate multiplexer sequence
Mux State:
0
1
2
3
4
5
0
1
2
3
4
5
IA
VA
IB
VB
IC
VC
TEMP
VA
V3
VB
IC
VC
Table 1: Inputs Selected in Regular and Alternate Multiplexer Cycles
In a typical application, the IA, IB, and IC inputs are connected to current transformers that sense the current on each phase of
the line voltage. VA, VB, and VC are typically connected to voltage sensors through resistor dividers.
The Multiplexer Control Circuit handles the setting of the multiplexer. The function of the Multiplexer Control Circuit is
governed by the I/O RAM registers MUX_ALT (0x2005[2]), EQU (0x2000[7:5]), and MUX_DIV (0x2002[7:6]). MUX_DIV controls
the number of samples per cycle. It can request 2, 3, 4, or 6 multiplexer states per cycle.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6513-IEL | 制造商:未知厂家 制造商全称:未知厂家 功能描述:71M6513 |
| 71M6513-IEL/F | 功能描述:计量片上系统 - SoC 3-Phase Energy Meter I/C 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 |
| 71M6513-IELR/F | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC 3-Phase Energy Meter I/C |
| 71M6513-IGT/F | 功能描述:计量片上系统 - SoC 3-Phase Energy Meter I/C 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 |
| 71M6513-IGT/F1 | 功能描述:计量片上系统 - SoC 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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