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参数资料
| 型号： | 71M6542F-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： | 13/165页 |
| 文件大小： | 2208K |
| 代理商： | 71M6542F-IGTR/F |
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v1.1
2008–2011 Teridian Semiconductor Corporation
11
2
Hardware Description
2.1
Hardware Overview
The Teridian 71M6541D/F and 71M6542F single-chip energy meter ICs integrate all primary functional
blocks required to implement a solid-state residential 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:
-
Metrology digital temperature compensation (MPU)
-
Automatic RTC digital temperature compensation operational in all power states
LCD drivers
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 71M6x01 companion IC with a shunt resistor sensor)
Resistive Shunt and Current Transformers are supported
Resistive Shunts and Current Transformers (CT) current sensors are supported. Resistive shunt current
sensors may be connected directly to the 71M654x device or isolated using a companion 71M6x01
isolator IC in order to implement a variety of single-phase / split-phase (71M6541D/F) or two-phase
(71M6542F) metering configurations. An inexpensive, small size pulse transformer is used to isolate the
71M6x01 isolated sensor from the 71M654x. The 71M654x performs digital communications bi-
directionally with the 71M6x01 and also provides power to the 71M6x01 through the isolating pulse
transformer. Isolated (remote) shunt current sensors are connected to the differential input of the
71M6x01. Included on the 71M6x01 companion isolator chip are:
Digital isolation communications interface
An analog front end (AFE)
A precision voltage reference (VREF)
A temperature sensor (for 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 71M654x
In a typical application, the 32-bit compute engine (CE) of the 71M654x sequentially processes the samples
from the voltage inputs on analog input pins and from the external 71M6x01 isolated sensors and performs
calculations to measure active energy (Wh) and reactive energy (VARh), as well as A
2h, and V2h for four-
quadrant metering. These measurements 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 clock function allows the 71M6541D/F and 71M6542F
to record time-of-use (TOU) metering information for multi-rate applications and to time-stamp tamper or
other events. Measurements can be displayed on 3.3 V LCDs commonly used in low-temperature
environments. An on-chip charge pump is available to drive 5 V LCDs. Flexible mapping of LCD display
segments facilitate integration of existing custom LCDs. Design trade-off between the number of LCD
segments and DIO pins can be implemented in software to accommodate various requirements.
In addition to the temperature-trimmed ultra-precision voltage reference, the on-chip digital temperature
compensation mechanism includes a temperature sensor and associated controls for correction of unwanted
temperature effects on measurement and RTC accuracy, e.g., to meet the requirements of ANSI and IEC
standards. Temperature-dependent external components such as crystal oscillator, resistive shunts, current
相关PDF资料 |
PDF描述 |
|---|---|
| 71M6541D-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 71M6542G-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 71M6541G-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 71M6541F-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 71M6543F-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6542FT-IGT/F | 制造商:Maxim Integrated Products 功能描述:1-PHASE SOC 128KB WITH PREC TEMP SENSOR - Rail/Tube |
| 71M6542FT-IGTR/F | 制造商:Maxim Integrated Products 功能描述:1-PHASE SOC, 64KB FLASH, PRES TEMP SENSOR - Tape and Reel |
| 71M6542G | 制造商:未知厂家 制造商全称:未知厂家 功能描述:71M6541D/71M6541F/71M6541G/71M6542F/71M6542G 是 TeridianTM 的第4 代高集成度单相电表SoC |
| 71M6542G-IGT/F | 功能描述:计量片上系统 - SoC 1-Phase Metering SOC with 128KB Flash 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 |
| 71M6542G-IGTR/F | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
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