参数资料
型号: 71M6521FE-DB
厂商: Maxim Integrated Products
文件页数: 14/107页
文件大小: 0K
描述: BOARD DEMO FOR 71M6521FE
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式:
已用 IC / 零件: 71M6521
已供物品: 2 个板,线缆,CD,电源
71M6521DE/DH/FE Data Sheet
The CE DRAM contains 128 32-bit words. The MPU can read and write the CE DRAM as the primary means of data
communication between the two processors.
Table 2 shows the CE DRAM addresses allocated to analog inputs from the AFE.
ADDRESS (HEX)
00
01
02
03
04
05
06
07
NAME
IA
VA
IB
VB
-
-
TEMP
VBAT
DESCRIPTION
Phase A current
Phase A voltage
Phase B current
Phase B voltage
Not used
Not used
Temperature
Battery Voltage
Table 2: CE DRAM Locations for ADC Results
The CE of the 71M6521DE/DH/FE is aided by support hardware that facilitates implementation of equations, pulse
counters, and accumulators. This support hardware is controlled through I/O RAM locations EQU (equation assist),
DIO_PV and DIO_PW (pulse count assist), and PRE_SAMPS and SUM_CYCLES (accumulation assist). PRE_SAMPS
and SUM_CYCLES support a dual level accumulation scheme where the first accumulator accumulates results from
PRE_SAMPS samples and the second accumulator accumulates up to SUM_CYCLES of the first accumulator results.
The integration time for each energy output is PRE_SAMPS * SUM_CYCLES /2520.6 (with MUX_DIV = 1). CE hardware
issues the XFER_BUSY interrupt when the accumulation is complete.
Meter Equations
Compute Engine (CE) firmware and hardware for residential meter configurations implement the equations listed in
Table 3. The register EQU (located in the I/O RAM) specifies the equation to be used based on the number of phases
used for metering.
Description
EQU
0B
Watt & VAR Formula
Element 0 Element 1
0
1
2
1 element, 2W 1 φ with neutral current sense
and tamper detection (VA connected to VB)
1 element, 3W 1 φ
2 element, 4W 2 φ
VA IA
VA(IA-IB)/2
VA IA
VA IB
N/A
VB IB
Table 3: Meter Equations.
Page: 14 of 107
Rev 3
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相关代理商/技术参数
参数描述
71M6521FE-IGT 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC
71M6521FE-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
71M6521FE-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
71M6521FE-IGTR 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC
71M6521FE-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