收藏本站
71M6545/71M6545H Data Sheet
5.4.4
Environment
Before starting the CE using the CE_E bit ( I/O RAM 0x2106[0]) , the MPU has to establish the proper
environment for the CE by implementing the following steps:
?
?
?
?
?
?
?
Locate the CE code in Flash memory using CE_LCTN[5:0] ( I/O RAM 0x2109[5:0] )
Load the CE data into RAM.
Establish the equation to be applied in EQU[2:0] (I/O RAM 0x2106[7:5]) .
Establish the accumulation period and number of samples in SUM_SAMPS[12:0] (I/O RAM
0x2107[4:0], 0x2108[7:0]) .
Establish the number of cycles per ADC multiplexer frame ( MUX_DIV[3:0] (I/O RAM 0x2100[7:4]) ).
Apply proper values to MUXn_SEL , as well as proper selections for DIFFn_E ( I/O RAM 0x210C[ ]) and
RMTn_E ( I/O RAM 0x2709[ ] in order to configure the analog inputs.
Initialize any MPU interrupts, such as CE_BUSY, XFER_BUSY, or the power-failure detection interrupt.
When different CE codes are used, a different set of environment parameters need to be established.
The exact values for these parameters are listed in the Application Notes and other documentation which
accompanies the CE code.
Operating CE codes with environment parameters deviating from the values specified by Maxim
leads to unpredictable results.
Typically, there are fifteen 32768 Hz cycles per ADC multiplexer frame (see 2.2.2 ). This means that the
product of the number of cycles per frame and the number of conversions per frame must be 14 (allowing
for one settling cycle). The default configuration is FIR_LEN = 01, I/O RAM 0x210C[1] (two cycles per
conversion) and MUX_DIV[3:0] = 7 (7 conversions per multiplexer cycle).
Sample configurations can be copied from Demo Code provided by Maxim with the Demo Kits.
5.4.5
CE Calculations
Referring to Table 63 , The MPU selects the desired equation by writing the EQU[2:0] ( I/O RAM
0x2106[7:5] ).
Table 63: CE EQU[2:0] Equations and Element Input Mapping
EQU
[2:0]*
2
3
Watt & VAR Formula
( WSUM/VARSUM )
VA*IA + VB*IB
(2-element, 3-W, 3 φ Delta)
VA*(IA-IB)/2 + VC*IC
(2 element, 4W 3 φ Delta)
W0SUM/
VAR0SUM
VA * IA
VA*(IA-IB)/2
W1SUM/
VAR1SUM
VB * IB
–
W2SUM/
VAR2SUM
N/A
VC*IC
I0SQ
SUM
IA
IA-IB
I1SQ
SUM
IB
IB
I2SQ
SUM
–
IC
4
VA*(IA-IB)/2 + VB*(IC-IB)/2
(2 element, 4W 3 φ Wye)
VA*(IA-IB)/2 VB*(IC-IB)/2
–
IA-IB
IC-IB
IC
5
VA*IA + VB*IB + VC*IC
(3 element, 4W 3 φ Wye)
VA*IA
VB*IB
VC*IC
IA
IB
IC
Note:
* Only EQU[2:0] = 5 is supported by the currently available CE code versions for the 71M6545/H.
Contact your local Maxim representative for CE codes that support equations 2, 3 and 4.
v2
101
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
720-10007-00300 CBL D-SUB 9PIN FMAL-25PIN FML 3M
720-10010-00025 CBL DSUB 9PIN FML-25PIN MAL .25M
720-10020-00300 CBL DSUB 9PIN FML-9PIN MALE 3M
720-10021-00300 CBL DSUB 9PIN FML-9PIN FEMAL 3M
72231-0881 8 POS T/P SHLD 4 GR ASSY
7250B PANEL KIT BOTTOM FOR R-1220 CASE
731-10061-00200 CBL DSUB HD 15FEMAL-15MALE 2.0M
73304-111 MJ HOR ESMT 8/8 H/O T&R
相关代理商/技术参数
71M6545-IGTR/F 功能描述:计量片上系统 - SoC Metrology Proc. (3P 64K Flsh .1%) 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
71M6545T-IGT/F 制造商:Maxim Integrated Products 功能描述:METROLOGY PROCESSORS - Rail/Tube
71M6545T-IGTR/F 制造商:Maxim Integrated Products 功能描述:3-PHASE AFE, 32KB FLASH, PRES TEMP SENSOR - Tape and Reel
71M6601 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring
71M6601-IF 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring
71M6601-IL 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring
71M6601-IL/F 功能描述:模数转换器 - ADC Isolated Sensor IC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
71M6601-ILF 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring