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参数资料
| 型号： | 78M6612-GT/F/P2 |
| 厂商： | Maxim Integrated |
| 文件页数： | 10/46页 |
| 文件大小： | 0K |
| 描述： | IC PWR MEASUREMENT AC 64LQFP |
| 标准包装： | 160 |
| 系列： | * |
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78M6612 Data Sheet
DS_6612_001
1.3
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 four channels (to compensate for the delay between
samples caused by the multiplexing scheme).
90 ° phase shifter (for narrowband 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.
CE code is provided by Maxim as a part of the application firmware available. The CE is not
programmable by the user. Measurement algorithms in the CE code can be customized by Maxim
upon request.
The CE program resides in Flash memory. Allocated Flash space for the CE program cannot exceed
1024 words (2 KB). The CE can access up to 2 KB of data RAM (XRAM), or 512 32-bit data words. The
CE is also aided by support hardware to facilitate implementation of equations, pulse counters and
accumulators. Usage of this hardware is firmware specific.
1.3.1
Real-Time Monitor
The CE contains a Real-Time Monitor (RTM), which can be programmed to monitor four selectable CE
DRAM locations at full sample rate for system debug purposes . The four monitored locations can be serially
output to the TMUXOUT pin via the digital output multiplexer at the beginning of each CE code pass.
The RTM output is clocked by CKTEST.
1.3.2
Pulse Generator
The CE provides four pulse generators used to output CE status indicators (e.g. SAG) directly to
designated DIO pins.
1.3.3
Data RAM (XRAM)
The CE and MPU use a single general-purpose Data RAM (also referred to as XRAM). When the MPU
and CE are clocking at maximum frequency (10 MHz), the RAM may be accessed up to four times during
each 100 ns interval. These consist of two MPU accesses, one CE access and one SPI access.
10
Rev 2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 78M6612-GTR/F/P1 | 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 |
| 78M6612-GTR/F/P2 | 功能描述:计量片上系统 - SoC 78M6612-GTR/F/P2 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 |
| 78M6612-IGT/F | 功能描述:计量片上系统 - SoC 2 Out Sgl Phase Pwr & Energy Msrmt 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 |
| 78M6612-IGT/F/P | 制造商:Maxim Integrated Products 功能描述:PROGRAMMED - LEAD FREE - Rail/Tube |
| 78M6612-IGT/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 |
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