收藏本站
71M6545/71M6545H Data Sheet
4.6
Connecting I 2 C EEPROMs
I 2 C EEPROMs or other I 2 C compatible devices should be connected to the DIO pins DIO2 and DIO3, as
shown in Figure 29 .
Pull-up resistors of roughly 10 k ? to V3P3D should be used for both SDCK and SDATA signals. The
DIO_EEX ( I/O RAM 0x2456[7:6] ) field must be set to 01 in order to convert the DIO pins DIO2 and DIO3 to
I 2 C pins SCL and SDATA.
10 k Ω
DIO2
DIO3
V3P3D
10 k Ω
EEPROM
SDCK
SDATA
71M6545/H
Figure 29: I 2 C EEPROM Connection
4.7
Connecting Three-Wire EEPROMs
μWire EEPROMs and other compatible devices should be connected to the DIO pins DIO2 and DIO3, as
described in 2.5.11 EEPROM Interface on page 57 .
4.8
UART (TX/RX)
The UART0 RX pin should be pulled down by a 10 k ? resistor and additionally protected by a 100 pF
ceramic capacitor, as shown in Figure 30 .
71M6545/H
RX
TX
100 pF 10 k Ω
RX
TX
Figure 30: Connections for the UART
4.9
Connecting the Reset Pin
Even though a functional meter does not necessarily need a reset switch, it is useful to have a reset
pushbutton for prototyping as shown in Figure 31 , left side. The RESET signal may be sourced from
V3P3SYS.
For a production meter, the RESET pin should be protected by the external components shown in
Figure 31 , right side. R1 should be in the range of 100 ? and mounted as closely as possible to the IC.
Since the 71M6545/H generates its own power-on reset, a reset button or circuitry, as shown in Figure
31 , is only required for test units and prototypes.
v2
79
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