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参数资料
| 型号： | 71M6521BE-IGT/F |
| 厂商： | Maxim Integrated |
| 文件页数： | 67/97页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 8K FLASH 64-LQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 160 |
| 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-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
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71M6521BE
Energy Meter IC
DATA SHEET
JANUARY 2008
Crystal Oscillator
The oscillator of the 71M6521BE drives a standard 32.768kHz watch crystal. The oscillator has been designed specifically to
handle these crystals and is compatible with their high impedance and limited power handling capability. The oscillator power
dissipation is very low to maximize the lifetime of any battery backup device attached to VBAT.
Board layouts with minimum capacitance from XIN to XOUT will require less battery current. Good layouts will have XIN and
XOUT shielded from each other.
Since the oscillator is self-biasing, an external resistor must not be connected across the crystal.
With a typical 32kHz crystal, the 71M6521BE needs 600 to 650 milliseconds to stabilize the oscillator clock after power-up.
This time is added to the 125ms (4096 CK32 cycles) for the PLL_OK signal to become true which is required for the part to
enter MISSION mode.
Flash Programming
Operational or test code can be programmed into the flash memory using either an in-circuit emulator or the Flash
Programmer Module (TFP-1) available from TERIDIAN. The flash programming procedure uses the E_RST, E_RXTX, and
E_TCLK pins.
MPU Firmware Library
All application-specific MPU functions mentioned above under “Application Information” are available from TERIDIAN as a
standard ANSI C library and as ANSI “C” source code. The code is available as part of the Demonstration Kit for the
71M6521BE IC. The Demonstration Kits come with the 71M6521BE IC preprogrammed with demo firmware mounted on a
functional sample meter PCB (Demo Board). The Demo Boards allow for quick and efficient evaluation of the IC without having
to write firmware or having to supply an in-circuit emulator (ICE).
Meter Calibration
Once the TERIDIAN 71M6521BE energy meter device has been installed in a meter system, it has to be calibrated for
tolerances of the current sensors, voltage dividers and signal conditioning components. The device can be calibrated using the
gain and phase adjustment factors accessible to the CE. The gain adjustment is used to compensate for tolerances of
components used for signal conditioning, especially the resistive components. Phase adjustment is provided to compensate for
phase shifts introduced by the current sensors.
Due to the flexibility of the MPU firmware, any calibration method, such as calibration based on energy, or current and voltage
can be implemented. It is also possible to implement segment-wise calibration (depending on current range).
The 71M6521BE supports common industry standard calibration techniques, such as single-point (energy-only), multi-point
(energy, Vrms, Irms), and auto-calibration.
V1.0
? 2005-2008 TERIDIAN Semiconductor Corporation
Page: 67 of 97
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6521BE-IGTR/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 |
| 71M6521BE-IGTR/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 |
| 71M6521DE | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC |
| 71M6521DE-DB | 制造商:Maxim Integrated Products 功能描述:Development Boards & Kits - 8051 71M6521DE Demo Brd |
| 71M6521DE-IGT/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 |
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