- 您现在的位置：买卖IC网 > PDF目录68811 > 71M6521FE-IM/F (MAXIM INTEGRATED PRODUCTS INC) SPECIALTY ANALOG CIRCUIT, QCC68 PDF资料下载
参数资料
| 型号： | 71M6521FE-IM/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC68 |
| 封装： | LEAD FREE, LQFN-68 |
| 文件页数： | 9/103页 |
| 文件大小： | 1691K |
| 代理商： | 71M6521FE-IM/F |
第1页第2页第3页第4页第5页第6页第7页第8页当前第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页
71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
OCTOBER 2010
v1.1
2005-2010 Teridian Semiconductor Corporation
Page: 13 of 103
A Maxim Integrated Products Brand
19-5370; 10/10
Battery Monitor
The battery voltage is measured by the ADC during alternative multiplexer frames if the BME (Battery Measure Enable) bit in
the I/O RAM is set. While BME is set, an on-chip 45k
load resistor is applied to the battery, and a scaled fraction of the
battery voltage is applied to the ADC input. After each alternative MUX frame, the result of the ADC conversion is available at
CE DRAM address 07. BME is ignored and assumed zero when system power is not available (V1 < VBIAS). See the Battery
Monitor section of the Electrical Specifications for details regarding the ADC LSB size and the conversion accuracy.
Functional Description
The AFE functions as a data acquisition system, controlled by the MPU. The main signals (IA, VA, IB, VB) are sampled and
the ADC counts obtained are stored in CE DRAM where they can be accessed by the CE and, if necessary, by the MPU.
Alternate multiplexer cycles are initiated less frequently by the MPU to gather access to the slow temperature and battery
signals.
IA
VA
MUX
VREF
4.9MHz
VBIAS
CROSS
CK32
VREF
VREF_DIS
MUX
CTRL
MUX_DIV
CHOP_E
EQU
IB
MUX
MUX_ALT
V3P3A
FIR_LEN
FIR
VB
VBIAS
VREF_CAL
Σ ADC
CONVERTER
+
-
VREF
ADC_E
TEMP
VBAT
FIR_DONE
FIR_START
Figure 3: AFE Block Diagram
Digital Computation Engine (CE)
The CE, a dedicated 32-bit signal processor, performs the precision computations necessary to accurately measure energy.
The CE calculations and processes include:
Multiplication of each current sample with its associated voltage sample to obtain the energy per sample (when
multiplied with the constant sample time).
Frequency-insensitive delay cancellation on all six channels (to compensate for the delay between samples caused
by the multiplexing scheme).
90
° phase shifter (for VAR calculations).
Pulse generation.
Monitoring of the input signal frequency (for frequency and phase information).
Monitoring of the input signal amplitude (for sag detection).
Scaling of the processed samples based on calibration coefficients.
The CE program resides in flash memory. Common access to flash memory by CE and MPU is controlled by a memory share
circuit. Each CE instruction word is two bytes long. Allocated flash space for the CE program cannot exceed 1024 words
(2KB). The CE program counter begins a pass through the CE code each time multiplexer state 0 begins. The code pass ends
相关PDF资料 |
PDF描述 |
|---|---|
| 71M6521FE-IGT/F | SPECIALTY ANALOG CIRCUIT, QFP64 |
| 71M6531D-IMR/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC68 |
| 71M6532D-IGTR/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP100 |
| 71M6532F-IGT/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP100 |
| 71M6531D-IM/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC68 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6521FE-IMR | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC |
| 71M6521FE-IMR/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 |
| 71M6521-TGP1-68M | 制造商:Maxim Integrated Products 功能描述:Programmer Accessories Gang Programmer Base w/6521 Socket Brd |
| 71M6523-DB | 功能描述:开发板和工具包 - 8051 71M6521D Demo Brd RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压: |
| 71M6523-IM | 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 |
发布紧急采购，3分钟左右您将得到回复。