参数资料
型号: 71M6521BE-IGT/F
厂商: Maxim Integrated
文件页数: 14/97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
71M6521BE
Energy Meter IC
DATA SHEET
JANUARY 2008
On-chip hardware provides a maximum pulse width feature: PLS_MAXWIDTH[7:0] selects a maximum negative pulse width to
be ‘Nmax’ updates according to the formula: Nmax = (2* PLS_MAXWIDTH +1). If PLS_MAXWIDTH = 255, no width checking is
performed.
Given that PLS_INTERVAL = 81, the maximum pulse width is determined by:
Maximum Pulse Width = (2 * PLS_MAXWIDTH +1) * 81*4*203ns = 65.8μs + PLS_MAXWIDTH * 131.5μs
The CE pulse output polarity is programmable to be either positive or negative. Pulse polarity may be inverted with PLS_INV .
When this bit is set, the pulses are active high, rather than the more usual active low.
CE Functional Overview
The ADC processes one sample per channel per multiplexer cycle. Figure 4 shows the timing of the samples taken during one
multiplexer cycle.
The number of samples processed during one accumulation cycle is controlled by the I/O RAM registers PRE_SAMPS
(0x2001[7:6]) and SUM_CYCLES (0x2001[5:0]). The integration time for each energy output is
PRE_SAMPS * SUM_CYCLES / 2520.6, where 2520.6 is the sample rate [Hz]
For example, PRE_SAMPS = 42 and SUM_CYCLES = 50 will establish 2100 samples per accumulation cycle. PRE_SAMPS = 100
and SUM_CYCLES = 21 will result in the exact same accumulation cycle of 2100 samples or 833ms. After an accumulation
cycle is completed, the XFER_BUSY interrupt signals to the MPU that accumulated data are available.
1/32768Hz =
30.518μs
IB
IA
VB
VA
13/32768Hz = 397μs
per mux cycle
Figure 4: Samples from Multiplexer Cycle
The end of each multiplexer cycle is signaled to the MPU by the CE_BUSY interrupt. At the end of each multiplexer cycle,
status information, such as sag data and the digitized input signal, is available to the MPU.
Page: 14 of 97
? 2005-2008 TERIDIAN Semiconductor Corporation
V1.0
相关PDF资料
PDF描述
ABC44DRES CONN EDGECARD 88POS .100 EYELET
RS3-4809SZ CONV DC/DC 3W 20-60VIN 09VOUT
VI-BNK-EU-F1 CONVERTER MOD DC/DC 40V 200W
78M6610+PSU/B00 IC ENERGY MEASURMENT 1PH 24TQFN
ACB65DHLT CONN EDGECARD 130PS .050 DIP SLD
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