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参数资料
| 型号： | 71M6521BE-IGT/F |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/97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
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 Ω 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.
VREF
IA
VA
IB
VB
VBAT
MUX
VBIAS
VBIAS
V3P3A
-
ΔΣ ADC
CONVERTER
+
ADC_E
FIR
TEMP
MUX
MUX
CTRL
EQU
MUX_ALT
VREF
VREF_CAL
VREF_DIS
CROSS
CK32
FIR_DONE
VREF
4.9MHz
FIR_LEN
CHOP_E
MUX_DIV
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:
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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 channels (to compensate for the delay between samples caused by
the multiplexing scheme).
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
when a HALT instruction is executed. For proper operation, the code pass must be completed before the multiplexer cycle
ends (see System Timing Summary in the Functional Description Section).
Page: 12 of 97
? 2005-2008 TERIDIAN Semiconductor Corporation
V1.0
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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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