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参数资料
| 型号： | 71M6513-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： | 53/104页 |
| 文件大小： | 1390K |
| 代理商： | 71M6513-IGTR/F |
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71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
AUGUST 2011
Page: 52 of 104
2005-2011 Teridian Semiconductor Corporation
A Maxim Integrated Products Brand
Data Flow
The data flow between CE and MPU is shown in Figure 17. In a typical application, the 32-bit compute engine (CE)
sequentially processes the samples from the voltage inputs on pins IA, VA, IB, VB, IC, and VC performing calculations to
measure active power (Wh), reactive power (VARh), 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.
Figure 17: MPU/CE Data Flow
CE/MPU Communication
Figure 18 shows the functional relationship between CE and MPU. The CE is controlled by the MPU via shared registers in the
I/O RAM and by registers in the CE DRAM. The CE outputs two interrupt signals to the MPU: CE_BUSY and XFER_BUSY,
which are connected to the MPU interrupt service inputs as external interrupts. CE_BUSY indicates that the CE is actively
processing data. This signal will occur once every multiplexer cycle. XFER_BUSY indicates that the CE is updating data to the
output region of the CE RAM. This will occur whenever the CE has finished generating a sum by completing an accumulation
interval determined by SUM_CYCLES * PRE_SAMPS samples. Interrupts to the MPU occur on the falling edges of the
XFER_BUSY and CE_BUSY signals.
Figure 19 shows the sequence of events between CE and MPU upon reset or power-up. In a typical application, the sequence
of events is as follows:
1)
Upon power-up, the MPU initializes the hardware, including disabling the CE
2)
The MPU loads the code for the CE into the CE PRAM
3)
The MPU loads CE data into the CE DRAM.
4)
The MPU starts the CE by setting the CE_EN bit in the I/O RAM.
5)
The CE then repetitively executes its code, generating results and storing them in the CE DRAM
It is important to note that the length of the accumulation interval, as determined by NACC, the product of SUM_CYCLES and
PRE_SAMPS is not an exact multiple of 1000ms. For example, if SUM_CYCLES = 60, and PRE_SAMPS = 00 (42), the resulting
accumulation interval is:
ms
Hz
f
N
S
ACC
75
.
999
62
.
2520
13
32768
42
60
=
=
τ
This means that accurate time measurements require the RTC.
CE
MPU
Pre-
Processor
Post-
Processor
IRQ
Processed
Metering
Data
Pulses
I/O RAM (Configuration RAM)
Samples
Data
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6515H | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC |
| 71M6515H_11 | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Up to 10ppmC precision ultra-stable voltage reference Digital temperature compensation |
| 71M6515H-DB | 功能描述:开发板和工具包 - 8051 71M6515H 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: |
| 71M6515H-IGT | 制造商:Maxim Integrated Products 功能描述:METERING FRONT END - Rail/Tube |
| 71M6515H-IGT/F | 功能描述:计量片上系统 - SoC 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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