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参数资料
| 型号： | 71M6521BE-IGT/F |
| 厂商： | Maxim Integrated |
| 文件页数： | 13/97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
The CE program must begin on a 1Kbyte boundary of the flash address. The I/O RAM register CE_LCTN[4:0] defines which
1KB boundary contains the CE code. Thus, the first CE instruction is located at 1024* CE_LCTN[4:0] .
The CE DRAM can be accessed by the FIR filter block, the RTM circuit, the CE, and the MPU. Assigned time slots are re-
served for FIR, RTM, and MPU, respectively, to prevent bus contention for CE DRAM data access. Holding registers are used
to convert 8-bit wide MPU data to/from 32-bit wide CE DRAM data, and wait states are inserted as needed, depending on the
frequency of CKMPU.
The CE DRAM is 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
Not used
Temperature
Battery Voltage
Table 2: CE DRAM Locations for ADC Results
The CE of the 71M6521BE 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 accu-
mulator 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 for residential meter configurations implements the calculations for equation 0 for a single-
element, 2-wire, 1-phase meter with neutral current sense and tamper detection. The energy for element 0 is determined by
VA*IA, and the energy for element 1 is determined by VA*IB.
Real-Time Monitor
The CE contains a Real-Time Monitor (RTM), which can be programmed through the UART to monitor four selectable CE
DRAM locations at full sample rate. The four monitored locations are serially output to the TMUXOUT pin via the digital output
multiplexer at the beginning of each CE code pass. The RTM can be enabled and disabled with RTM_EN . The RTM output is
clocked by CKTEST. Each RTM word is clocked out in 35 cycles and contains a leading flag bit. See the Functional
Description section for the RTM output format. RTM is low when not in use.
Pulse Generator
The chip contains a pulse generator that creates low-jitter Wh pulses at a rate set by the CE.
The I/O RAM bit DIO_PW, as described in the Digital I/O section, can be programmed to route WPULSE to the output pin
DIO6. Pulses can also be output on OPT_TX (see OPT_TXE[1:0] for details).
The value of PLS_INTERVAL depends on the sample rate (nominal 2520Hz) and the number of times the pulse generator is
executed in the CE code. Changing these values would require redesign of all CE filters and/or modification of the CE pulse
generator code. Since these numbers are fixed for the CE code supplied by TERIDIAN, the value of PLS_INTERVAL is also
fixed, to a value of 0x81.
V1.0
? 2005-2008 TERIDIAN Semiconductor Corporation
Page: 13 of 97
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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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